Fission Properties of Neutron-Rich Nuclei
|
|
- Holly French
- 5 years ago
- Views:
Transcription
1 Fission Properties of Neutron-Rich Nuclei Walter F. Henning (RIKEN, ANL, TU Munich) 3/21 22/2013 1
2 Fission Properties of Neutron-Rich Nuclei Motivation Predictions from recent theory Experimental fission barriers Proposed approach to n-rich isotopes Summary and outlook 3/21 22/2013 2
3 SHE: the limits of heavy nuclei -4 Cold fusion -6-5 Neutron capture -3-2 U -4-2 Th -5 Hot fusion Act.+ 48 Ca Pb Bi U Fission termination and recycling of the r process r process production of 232 Th and 238 U 3/21 22/2013 3
4 Fission in the simple liquid-drop picture Fissility ~ Z 2 /A A = constant N=126 B f However: P. Mӧller et al: Pb Isotopes N 3/21 22/2013 4
5 Predictions from recent theory 3/21 22/2013 5
6 Fisson Barrier [MeV] Mass Number A 3/21 22/2013 Radium Isotopes Microscopic features: Cross sections for reflectionsymmetric and asymmetric fission depend on relative level densities at saddles as well as barrier heights and widths. Calculation of microscopic level densities based on single particle levels and many-particle-many-hole excitations Pairing individually for all configurations within BCS formalism. Fission barrier (MeV) N=126 Lead Isotopes 10 N A
7 3/21 22/2013 7
8 SHE: the limits of heavy nuclei -4 Cold fusion -6-5 Neutron capture -3-2 U -4-2 Th -5 Hot fusion Act.+ 48 Ca Pb Bi U Theory of Nuclear Fission: Understanding the structure and dynamics ofthe prototypical many-body process of the nucleus Fission termination and recycling of the r-process r-process yield for 232 Th and 238 U 3/21 22/2013 8
9 Experimental determination(s) of fission barriers 3/21 22/2013 9
10 3/21 22/
11 Earlier fission barrier studies at low energies employing direct nucleon-transfer reactions B.B. Back et al.; Nucl. Phys. A165 (1971) 449 E. Konecny et al.; Phys. Lett. B 45 (1073) 329 C O (d,p) Ϭ f /ϭ p (d,pf) Ϭ f /ϭ p 3/21 22/
12 3/21 22/
13 Entry Distribution, Fission Barrier, and Formation Mechanism of 254 No P. Reiter,1,2 T. L. Khoo,1 T. Lauritsen,1 C. J. Lister,1 D. Seweryniak,1 A. A. Sonzogni,1 I. Ahmad,1 N. Amzal,3 P. Bhattacharyya,4 P. A. Butler,3 M. P. Carpenter,1 A. J. Chewter,3 J. A. Cizewski,1,5 C. N. Davids,1 K.Y. Ding,5 N. Fotiades,5 J. P. Greene,1 P. T. Greenlees,3 A. Heinz,1 W. F. Henning,1 R.-D. Herzberg,3 R.V. F. Janssens,1G. D. Jones,3 H. Kankaanpää,7 F. G. Kondev,1 W. Korten,6 M. Leino,7 S. Siem,1,8 J. Uusitalo,1 K. Vetter,9 and I. Wiedenhöver1 E * (MeV) 3/21 22/
14 Fission probabilities as a function of nuclear charge of the DI product Contour plot of fission probabilities as a function of excitation energy P fis 14
15 How can we experimentally determine fission barriers of neutron-rich nuclei? 15
16 Earlier fission barrier studies at low energies employing direct nucleon-transfer reactions B.B. Back et al.; Nucl. Phys. A165 (1971) 449 E. Konecny et al.; Phys. Lett. B 45 (1073) 329 RIBs and inverse kinematics C O (d,p) Ϭ f /ϭ p (d,pf) Ϭ f /ϭ p 3/21 22/
17 (p,2p) (p,2p) 4 He Zn (p,2p) 3/21 22/
18 3/21 22/
19 Production Cross-sections of Neutron-Rich Pb and Bi Isotopes in the fragmentation of 238 U H. Alvarez-Pol et al.; Eur. Phys. J. A 42 (2009) 485 3/21 22/
20 Pb and Bi isotopes observed in 238 U fragmentation Fission barrier (MeV) Pb N= U 23 5 U 238 U 10 N A Th 232 Th 209 Bi Pb Pb Pb Pb 3/21 22/
21 Neutron rich regions with known production cross sections from 238 U fragmentation H. Alvarez-Pol et al.; Eur. Phys. J. A 42 (2009)485 J. Kurcewicz et al.; Phys. Lett. B 717 (2012) 371 Published production cross sections for neutron-rich isotopes in the fragmentation of 238 U 3/21 22/
22 Countrate estimates: Fragmentation yield for 238 U beam and ϭ=100nb 10 pna 238 U 250 mg/cm 2 Be target 100 nb fragment cross section (~ 198 Pt, 214 Pb, 217 Bi) 1 day beam on target N=8.6 x 10 6 fragment events per day Fission yield for (p,2p) 8.6 x 10 6 /day ( 214 Pb or 217 Bi) 1g/cm 2 H 2 target 100μb/MeV (p,2pf) cross section 1 day beam on target N=5 x 10 2 events/day MeV 3/21 22/
23 Approach at high energies with RIBs in inverse kinematics: nucleon knockout i.e., (p, 2p) or (p, pn) etc p p FDC2 SAMURAI 3/21 22/
24 SAMURAI Commissioning May 2012 Commissioning Set up All the detectors and DAQ commissioned with beam and calibrated HI neutron coincidences 17 C 16 C+n 15 B+n 15 C 14 C+n 14 Be 12 Be+2n - RIKEN: K. Yoneda, N. Fukuda, N. Inabe, T. Isobe, T. Kubo, K. Kusaka, T. Motobayashi, J. Ohnishi, H. Otsu, H. Sato, Y. Shimizu, H. Suzuki, H. Takeda, S. Takeuchi - Tohoku U: T. Kobayashi, K. Takahashi, K. Sekiguchi -Tokyo Tech: T. Nakamura, N. Kobayashi, Y. Kondo, R. Minakata, S. Nishi, S. Ogoshi, T. Sako, R. Tanaka - Kyoto U: Y. Matsuda, T. Murakami - Kyushu U: T. Teranishi -France: F. Delaunay, J. Gibelin, M. Miguel - Germany: T. Aumann, Y. Togano - Korea: Y. Sato, J. Hwang, S. Kim
25 RRC RILAC RIBF Layout ZeroDegree (ZDS) (2008) SAMURAI RIPS (2011) frc SRC (2007) IRC BigRIPS (2007) SHARAQ (2009)
26 K. H. Schmidt et al Nucl. Phys. A 665 (2000) U 208 Pb 3/21 22/
27 Fission Fragment Mass Distribution 3/21 22/
28 H. Alvarez Pol et al Phys. Rev C 82 (2010) Beam: 10 8 / sec 238 U 100pb sensitivity in 2 days Factor 5 reduction per each additional neutron 3/21 22/
29 SHE: the limits of heavy nuclei -4 Cold fusion -6-5 Neutron capture -3-2 U -4-2 Th -5 Hot fusion Act.+ 48 Ca Pb Bi U Theory of Nuclear Fission: Understanding the structure and dynamics ofthe prototypical many-body process of the nucleus Fission termination and recycling of the r-process r-process yield for 232 Th and 238 U 3/21 22/
Study of Neutron-Proton Correlation & 3N-Force in 12 C
Study of Neutron-Proton Correlation & 3N-Force in C Outline: 1. Interesting physics on np-correlations in C 2. Probe: Two-nucleon knockout reaction Partial cross section and P // measurements 3. Experimental
More informationNuclear Physics at RIBF
Nuclear Physics at RIBF 1. Facility Overview 2. Nuclear structure & astrophysics Highlights and on-going programs 3. Toward Island-of-Stability 4. Summary H. Sakurai RIKEN Nishina Center/Dept of Phys.,
More informationA ferro-deformation at the open quantum system with protons, Z = 8, neutrons, N = 20: 28 O
A ferro-deformation at the open quantum system with protons, Z = 8, neutrons, N = : 8 O Chang-Bum Moon* Hoseo University, Chung-Nam 33-795, Korea (May 3, 1) We offer a possibility that the nuclear system
More informationQuasi-Free Knockout Reaction Studies at RIBF
INT Workshop INT-15-58W Reactions and Structure of Exotic Nuclei March 2 13, 2015 Quasi-Free Knockout Reaction Studies at RIBF Tomohiro Uesaka (RIKEN Nishina Center) Quasifree Scattering (QFS) QFS is a
More informationds the vicinity of neutron drip l Takechi, M., Suzuki, S., Nishimur M., Ohtsubo, T., Nagashima, M., S
Kochi University of Technology Aca Search for halo nucleus in Mg iso Title he measurements of reaction cross ds the vicinity of neutron drip l Takechi, M., Suzuki, S., Nishimur M., Ohtsubo, T., Nagashima,
More informationFusion probability and survivability in estimates of heaviest nuclei production R.N. Sagaidak Flerov Laboratory of Nuclear Reactions, JINR, Dubna, RF
Fusion probability and survivability in estimates of heaviest nuclei production R.N. Sagaidak Flerov Laboratory of Nuclear Reactions, JINR, Dubna, RF 1. Fusion probability and survivability as main values
More informationPrecision spectroscopy of deeply bound pionic states in tin isotopes at RIBF
Precision spectroscopy of deeply bound pionic states in tin isotopes at RIBF DeukSoon Ahn, Georg P.A. Berg, Masanori Dozono, Daijiro Etoh, Hiroyuki Fujioka, Naoki Fukuda,! RILAC Nobuhisa Fukunishi, Hans
More informationExotic Nuclei II. Neutron-rich nuclides. Michael Thoennessen FRIB/NSCL Michigan State University
Exotic Nuclei II Neutron-rich nuclides Michael Thoennessen FRIB/NSCL Michigan State University Most neutron-rich nuclides N/Z = 1 n X not a nuclide but a nucleon N/Z = 3 8 He 11 Li: N/Z = 2.67 N/Z = 3
More informationSpectroscopy of 252No to Investigate its K-isomer
Spectroscopy of to Investigate its K-isomer Edward Parr Motivation in Superheavies PROTONS Single Particle Energy (MeV) Single Particle Energy (MeV) NEUTRONS Next shell gaps predicted for Superheavy spherical
More informationCapture barrier distributions and superheavy elements
Capture barrier distributions and superheavy elements Kouichi Hagino Tohoku University, Sendai, Japan 1. Introduction: Fusion reactions for SHE 2. Role of deformation in capture reactions 3. Barrier distribution
More information2. Acceleration Scheme
2. Acceleration Scheme Accelerators in the RIBF consist of three existing accelerators and three ring cyclotrons under construction. The existing accelerators are the RIKEN Linear Accelerator (RILAC),
More informationBeta-delayed neutron measurements with the BELEN detector
Beta-delayed neutron measurements with the BELEN detector Iris Dillmann Helmholtz Young Investigators Group LISA Universität Giessen and GSI Helmholtzzentrum Darmstadt/ Germany 1 Overview Who? What? Why?
More informationTotal fission cross section in proton-induced reactions on 181 Ta measured in inverse kinematics
Total fission cross section in proton-induced reactions on 181 Ta measured in inverse kinematics Yassid Ayyad Universidad de Santiago de Compostela Subactinides fission cross section Pb, W and Ta as a
More informationOpportunities to study the SHE production mechanism with rare isotopes at the ReA3 facility
Opportunities to study the SHE production mechanism with rare isotopes at the ReA3 facility Zach Kohley National Superconducting Cyclotron Laboratory Department of Chemistry Michigan State University,
More informationMeasurement of activation of helium gas by 238 U beam irradiation at about 11 A MeV
Measurement of activation of helium gas by 238 U beam irradiation at about 11 A MeV A. Akashio a, K. Tanaka, H. Imao, and Y. Uwamino RIKEN Nishina Center 2-1 Hirosawa, Wako, Saitama, Japan Abstract. A
More informationProposal for Nuclear Physics Experiment at RI Beam Factory
User Support Office use only Date: May 8, 2011 Proposal for Nuclear Physics Experiment at RI Beam Factory (RIBF NP-PAC-09, 2011) Title of Experiment: The E(U)RICA Spectrometer Category: [] NP experiment
More informationProduction of very neutron rich isotopes: What should we know?
MSU RIKEN collaboration Production of very neutron rich isotopes: What should we know? Oleg B. Tarasov * National Superconducting Cyclotron Laboratory, Michigan State University Keywords of this experimental
More informationRecent results at RIBF
Recent results at RIBF 1. Nuclear structure and astrophysics in-beam gamma & decay spectroscopy 2. New coming programs H. Sakurai RIKEN Nishina Center/Dept of Phys., Univ. of Tokyo RIKEN RI Beam Factory
More informationExperiments with gold, lead and uranium ion beams and their technical and theoretical interest.
Experiments with gold, lead and uranium ion beams and their technical and theoretical interest. (Karl-Heinz Schmidt, GSI Darmstadt) 1. The Problem of Nuclear Waste 1.1 Nuclear Reactor 1.2 Transmutation
More information(Inverse-kinematics) fission investigations in active targets
! (Inverse-kinematics) fission investigations in active targets 1. First experiment performed in GANIL.! 2. Exploring exotic fissioning systems with ACTAR TPC. C. Rodríguez-Tajes et al., rodriguez@ganil.fr!
More informationLarge-Acceptance Multi-Particle Spectrometer SAMURAI. Construction Proposal
Large-Acceptance Multi-Particle Spectrometer SAMURAI (Superconducting Analyzer for Multi-particle from Radio Isotope Beams) Construction Proposal Abstract We proposed and started to construct a large-acceptance
More informationFirst RIA Summer School on Exotic Beam Physics, August 12-17, Michael Thoennessen, NSCL/MSU. Lecture 1: Limits of Stability 1 A = 21
Limits of Stability At the moment we are limited in our view of the atomic nucleus Proton Drip Line? Known Nuclei Heavy Elements? Fission Limit? Some Basic Nuclear Property Neutron Drip Line? RIA Will
More informationBogdan Fornal. Institute of Nuclear Physics, Polish Academy of Sciences Krakow, Poland
Bogdan Fornal Institute of Nuclear Physics, Polish Academy of Sciences Krakow, Poland Collaboration: IFJ PAN Krakow - ANL Argonne - ANU Canberra The Nuclear Structure Workshop at the Weizmann Institute,
More informationA new theoretical approach to low-energy fission based on general laws of quantum and statistical mechanics
A new theoretical approach to low-energy fission based on general laws of quantum and statistical mechanics Karl-Heinz Schmidt Beatriz Jurado Contribution to the meeting of the WPEG subgroup Improved Fission
More informationRole of Hexadecupole Deformation in the Shape Evolution of Neutron-rich Nd Isotopes
Role of Hexadecupole Deformation in the Shape Evolution of Neutron-rich Nd Isotopes Center for Nuclear Study, the University of Tokyo Rin Yokoyama INPC 2016 at Adelaide, Australia Sep. 13, 2016 Sep. 13,
More informationDecay Spectroscopy with EURICA in the region of 100 Sn
Decay Spectroscopy with EURICA in the region of 100 Sn Daniel Lubos for the EURICA RIBF09 collaboration Technische Universität München Jul 09, 2015 @ Science Day of RA G Excellence Cluster Origin and Structure
More informationPHL424: Nuclear fusion
PHL424: Nuclear fusion Hot Fusion 5 10 15 5 10 8 projectiles on target compound nuclei 1 atom Hot fusion (1961 1974) successful up to element 106 (Seaborgium) Coulomb barrier V C between projectile and
More informationInfluence of entrance channels on formation of superheavy nuclei in massive fusion reactions
Influence of entrance channels on formation of superheavy nuclei in massive fusion reactions arxiv:0904.2994v1 [nucl-th] 20 Apr 2009 Zhao-Qing Feng a, Jun-Qing Li a, Gen-Ming Jin a a Institute of Modern
More informationMapping Fission in Terra Incognita in the neutron-deficient lead region
Mapping Fission in Terra Incognita in the neutron-deficient lead region Andrei Andreyev University of York, UK Japan Atomic Energy Agency (JAEA, Tokai, Japan) 200,202,204 Fr N/Z~1.25 192,194,196 At 186,188
More informationAnnax-I. Investigation of multi-nucleon transfer reactions in
Annax-I Investigation of multi-nucleon transfer reactions in 40 Ca on 68,70 Zn at and near the Coulomb barrier. Abstract We will study the multi-nucleon transfer between two medium-heavy nuclei to find
More informationFusion of light halo nuclei
Fusion of light halo nuclei Alinka Lépine-Szily Instituto de Física-Universidade de São Paulo, São Paulo, Brazil 1111118th 118th Intn Few-Body Problems in PhysIcs 8th International IUPAP Conference on
More informationFission and the r-process: experimental achievements and future possibilities
Fission and the r-process: experimental achievements and future possibilities J. Benlliure Universidad de Santiago de Compostela, Spain The role of fission 260 < A < 320 spontaneous fission n-induced fission
More informationFission fragment mass distributions via prompt γ -ray spectroscopy
PRAMANA c Indian Academy of Sciences Vol. 85, No. 3 journal of September 2015 physics pp. 379 384 Fission fragment mass distributions via prompt γ -ray spectroscopy L S DANU, D C BISWAS, B K NAYAK and
More informationNuclear Physics using RadioIsotope Beams. T. Kobayashi (Tohoku Univ.)
Nuclear Physics using RadioIsotope Beams T. Kobayashi (Tohoku Univ.) Nucleus: two kinds of Fermions: proton & neutron size ~1fm strong interaction: ~known tightly bound system < several fm < 300 nucleons
More informationWorldwide Direction on Nuclear Science and Application
Worldwide Direction on Nuclear Science and Application Thomas Glasmacher Michigan State University LINAC 16 28 th Linear Accelerator Conference East Lansing, MI, USA 25-30 September 2016 21 st Century
More informationEffects of Isospin on Pre-scission Particle Multiplicity of Heavy Systems and Its Excitation Energy Dependence
Commun. Theor. Phys. (Beijing, China) 41 (2004) pp. 751 756 c International Academic Publishers Vol. 41, No. 5, May 15, 2004 Effects of Isospin on Pre-scission Particle Multiplicity of Heavy Systems and
More informationAuthor(s) Tatsuzawa, Ryotaro; Takaki, Naoyuki. Citation Physics Procedia (2015), 64:
Title Fission Study of Actinide Nuclei Us Reactions Nishio, Katsuhisa; Hirose, Kentaro; Author(s) Hiroyuki; Nishinaka, Ichiro; Orland James; Tsukada, Kazuaki; Chiba, Sat Tatsuzawa, Ryotaro; Takaki, Naoyuki
More informationExperimental Study of Stellar Reactions at CNS
Experimental Study of Stellar Reactions at CNS Shigeru KUBONO ( 久保野茂 ) Center for Nuclear Study (CNS) University of Tokyo 1. Nucleosynthesis under Explosive Conditions + CNS-RIKEN AVF-Upgrade Project 2.
More informationNeutron-Rich Ti Isotopes And Possible N = 32 And N = 34 Shell Gaps
Neutron-Rich Isotopes And Possible N = 32 And N = 34 Shell Gaps D.-C. Dinca Λ, R. V. F. Janssens ΛΛ, A. Gade, B. Fornal,S.Zhu ΛΛ, D. Bazin, R. Broda, C. M. Campbell Λ, M. P. Carpenter ΛΛ, P. Chowdhury
More informationThe new isotopes 240 Es and 236 Bk
The new isotopes 240 Es and 236 Bk Joonas Konki Department of Physics University of Jyväskylä TASCA 16 The 15th Workshop on Recoil Separator for Superheavy Element Chemistry 26.8.2016 GSI, Darmstadt, Germany
More informationPresent status of RIBF accelerators at RIKEN
Present status of RIBF accelerators at RIKEN 1) Introduction to RIBF ( - 2007) 2) Improvements & Present status (2008-2010) 3) Recent results from RIBF (2008-2010) 4) Further developments & Plans (2009-2010)
More informationThe light nuclei spin structure from the hadronic interactions at intermediate energies
The light nuclei spin structure from the hadronic interactions at intermediate energies P.K. Kurilkin on behalf JINR-Japan collaboration Hadron 2011, June 13-17, München, Germany Collaboration Joint Institute
More informationHeavy-ion sub-barrier fusion reactions: a sensitive tool to probe nuclear structure
Heavy-ion sub-barrier fusion reactions: a sensitive tool to probe nuclear structure Kouichi Hagino Tohoku University, Sendai, Japan 1. Introduction: heavy-ion fusion reactions 2. Fusion and Quasi-elastic
More informationarxiv: v2 [nucl-ex] 3 Mar 2011
14 Be(p,n) 14 B reaction at 69 MeV in inverse kinematics arxiv:1102.3585v2 [nucl-ex] 3 Mar 2011 Y. Satou, 1, T. Nakamura, 2 Y. Kondo, 2 N. Matsui, 2 Y. Hashimoto, 2 T. Nakabayashi, 2 T. Okumura, 2 M. Shinohara,
More informationarxiv: v1 [nucl-ex] 26 Dec 2007
Unbound excited states in 19,17 C Y. Satou a, T. Nakamura a, N. Fukuda b, T. Sugimoto b, arxiv:0712.4121v1 [nucl-ex] 26 Dec 2007 Y. Kondo b, N. Matsui a, Y. Hashimoto a, T. Nakabayashi a, T. Okumura a,
More informationFission and Fusion at the End of the Periodic System
1 Fission and Fusion at the End of the Periodic System Peter Möller, Arnold J. Sierk, Takatoshi Ichikawa and Akira Iwamoto 1 Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87544 2
More informationExperiments with exotic nuclei I. Thursday. Preliminaries Nuclear existence Decay modes beyond the driplines Ground-state half-lives.
Experiments with exotic nuclei I Thursday Preliminaries Nuclear existence Decay modes beyond the driplines Ground-state half-lives Friday Motivation Nuclear structure at extreme N/Z ratios or high A? Changes
More informationNeutron-rich rare isotope production with stable and radioactive beams in the mass range A ~ at 15 MeV/nucleon
Neutron-rich rare isotope production with stable and radioactive beams in the mass range A ~ 40-60 at 15 MeV/nucleon A. Papageorgiou 1, G.A. Soulotis 1, M. Veselsky 2, A. Bonasera 3,4 1 Laboratory of Physical
More informationThe role of fission in the r-r process nucleosynthesis
The role of fission in the r-r process nucleosynthesis Aleksandra Kelić GSI Darmstadt Together with: Karl-Heinz Schmidt, Karlheinz Langanke GSI Darmstadt Nikolaj Zinner University of Århus - Århus Motivation
More informationCharge-state distribution measurements using gas charge stripper toward
Charge-state distribution measurements using gas charge stripper toward 238 U and 136Xe acceleration at RIKEN RIBF Charge strippers at RIKEN RIBF Gas charge stripper - differential pumping system - offline
More informationFission research at JAEA and opportunity with J-PARC for fission and nuclear data
Fission research at JAEA and opportunity with J-PARC for fission and nuclear data Katsuhisa Nishio Advanced Science Research Center Japan Atomic Energy Agency Tokai, JAPAN INT 13-3, Workshop, Seattle,
More informationHeavy-ion fusion reactions for superheavy elements Kouichi Hagino
Heavy-ion fusion reactions for superheavy elements Kouichi Hagino Tohoku University, Sendai, Japan 1. H.I. sub-barrier fusion reactions 2. Coupled-channels approach and barrier distributions 3. Application
More informationRARE-ISOTOPE BEAM FACILITIES IN ASIA
RARE-ISOTOPE BEAM FACILITIES IN ASIA O. Kamigaito RIKEN Nishina Center for Accelerator-Based Science Wako-shi, Saitama 351-0198 Japan Abstract SCRIT Growing activities in the rare-isotpe beam (RIB) facilities
More informationNuclear Reactions. Shape, interaction, and excitation structures of nuclei scattering expt. cf. Experiment by Rutherford (a scatt.
Nuclear Reactions Shape, interaction, and excitation structures of nuclei scattering expt. cf. Experiment by Rutherford (a scatt.) scattered particles detector solid angle projectile target transmitted
More informationHeavy Ion Accelerators for RIKEN RI Beam Factory and Upgrade Plans. Upgrade Injector
Heavy Ion Accelerators for RIKEN RI Beam Factory and Upgrade Plans RI Beam Factory (1997-) Heavy Ion Beams (2007-) Low intensity Beam now (2008) (Goal: 1pμA U-ion beam) Upgrade Injector H. Okuno, et. al.
More informationBeam optics analysis of large-acceptance superconducting in-flight separator BigRIPS at RIKEN RI Beam Factory (RIBF)
Beam optics analysis of large-acceptance superconducting in-flight separator BigRIPS at RIKEN RI Beam Factory (RIBF) Magnetic spectrometer used for the production of radioactive isotope (RI) beams based
More informationProduction of superheavy elements. Seminar: Key experiments in particle physics Supervisor: Kai Schweda Thorsten Heußer
Production of superheavy elements Seminar: Key experiments in particle physics 26.06.09 Supervisor: Kai Schweda Thorsten Heußer Outline 1. Introduction 2. Nuclear shell model 3. (SHE's) 4. Experiments
More informationSpectroscopy of Single-Particle States in Oxygen Isotopes via (p, 2p) Reaction
Spectroscopy of Single-Particle States in Oxygen Isotopes via (p, 2p) Reaction Shoichiro KAWASE Center for Nuclear Study, the University of Tokyo (p,2p) reaction as a spectroscopic tool Simple reaction
More informationPresent status of the heaviest elements study using GARIS at RIKEN
Present status of the heaviest elements study using GARIS at RIKEN Kosuke Morita Superheavy Element Laboratory RIKEN Nishina Center for Accelerator Based Science 2006/9/29 TASCA06 Garching,, Germany 1
More informationKEK isotope separation system for β-decay spectroscopy of r-process nuclei
2 nd Workshop on Inelastic Reaction Isotope Separator for Heavy Elements Nov. 19, 2010 KEK isotope separation system for β-decay spectroscopy of r-process nuclei Y.X. Watanabe, RNB group (KEK) 1. Outline
More informationPhysics Letters B 707 (2012) Contents lists available at SciVerse ScienceDirect. Physics Letters B.
Physics Letters B 707 (2012) 357 361 Contents lists available at SciVerse ScienceDirect Physics Letters B www.elsevier.com/locate/physletb Interaction cross sections for Ne isotopes towards the island
More informationExotic Beam Summer School: Accelerators and Beams
Exotic Beam Summer School: Accelerators and Beams 26 July, 2011 Bradley M. Sherrill FRIB Chief Scientist Brad Sherrill EBSS July 2011, Slide 1 Slid 1! Accelerators are used to produce important isotopes
More informationRIBF. FRIB HRS Workshop on July 11, 2014 at Michigan State University. !! Hideaki Otsu (RIKEN Nishina Center) SAMURAI
@ RIBF!! Hideaki Otsu (RIKEN Nishina Center)! FRIB HRS Workshop on July 11, 2014 at Michigan State University! " @ RIBF" Today's contents! 1. Overview 2. History 3. Properties/Constituents 4. Experimental
More informationOblate nuclear shapes and shape coexistence in neutron-deficient rare earth isotopes
Oblate nuclear shapes and shape coexistence in neutron-deficient rare earth isotopes Andreas Görgen Service de Physique Nucléaire CEA Saclay Sunniva Siem Department of Physics University of Oslo 1 Context
More informationIsomer Studies with RI-beam Induced Fusion Reactions and In-Flight Fission Reactions. A. Odahara Department of Physics, Osaka University
Isomer Studies with RI-beam Induced Fusion Reactions and In-Flight Fission Reactions A. Odahara Department of Physics, Osaka University Isomer : one of good probes to obtain information for change of nuclear
More informationSpin-isospin correlation in 8 He and 12 Be(p,n)
Mini-workshop 18 November 2014 Spin-isospin correlation in 8 He and Be(p,n) H. Sakai 1, H. Sagawa 1,2, M. Kobayashi 3, S. Shimoura 3, T. Suzuki 4 and K. Yako 3 For the SHARAQ Collaboration 1 RIKEN Nishina
More informationHEIDI WATKINS. Plunger Measurements of Shape Coexistence in the Neutron Deficient 174 Pt Nuclei
Plunger Measurements of Shape Coexistence in the Neutron Deficient 174 Pt Nuclei HEIDI WATKINS 2009 IoP NUCLEAR PHYSICS CONFERENCE UNIVERSITY OF BIRMINGHAM OVERVIEW Physics Motivation. Shape Coexistence
More informationFormation of superheavy nuclei in cold fusion reactions
Formation of superheavy nuclei in cold fusion reactions arxiv:0707.2588v3 [nucl-th] 9 Jul 2007 Zhao-Qing Feng,2, Gen-Ming Jin, Jun-Qing Li, Werner Scheid 3 Institute of Modern Physics, Chinese Academy
More informationMapping Low-Energy Fission with RIBs (in the lead region)
Mapping Low-Energy Fission with RIBs (in the lead region) Andrei Andreyev University of York, UK Japan Atomic Energy Agency (JAEA), Tokai, Japan Low-energy fission in the new regions of the Nuclear Chart
More informationFuture RIB facilities
Future RIB facilities (RIB= radioactive ion beam / rare isotope beam) Reiner Krücken Physik Department E12 Technische Universität München Maier-Leibnitz Laboratory of TU München and LMU München for Nuclear-,
More informationCollective Excitations in Exotic Nuclei
Collective Excitations in Exotic Nuclei David Radford (ORNL) RIA Summer School, August 2002 I Nuclear Excitations: Single particle motion vs. Collective motion Collective Modes: Rotations and Vibrations
More informationTitle Collectivity of neutron-rich Cr and Fe toward N=50
Title Collectivity of neutron-rich Cr and Fe toward N=50 Author(s) Citation Werner, V; Santamaria, C; Louchart, C; Obertelli, A; Doornenbal, P; Nowacki, F; Authelet, G; Baba, H; Calvet, D; Château, F;
More informationC NS. Direct reactions of Borromean nuclei FM50. S. Shimoura CNS, University of Tokyo
C NS Direct reactions of Borromean nuclei S. Shimoura CNS, University of Tokyo FM50 Introduction 3N force in neutron-rich nuclei U1X IL2/4 B.E. Importance of T=3/2 3N force in the PRC 64 014001 (2001)
More informationSubbarrier cold fusion reactions leading to superheavy elements( )
IL NUOVO CIMENTO VOL. 110 A, N. 9-10 Settembre-Ottobre 1997 Subbarrier cold fusion reactions leading to superheavy elements( ) A. G. POPEKO Flerov Laboratory of Nuclear Reactions, JINR - 141980 Dubna,
More informationNeutron-Proton Asymmetry Dependence of Spectroscopic Factors
Neutron-Proton Asymmetry Dependence of Spectroscopic Factors Jenny Lee The University of Hong Kong JCNP Symposium Nov 7-12, 2015 Hong Kong 惠州 Huizhou Beijing Shanghai Hong Kong Tokyo ~ 100 km HIAF University
More informationFusion probability in heavy ion induced reac4ons. G.N. Knyazheva FLNR, JINR Interna5onal Symposium Superheavy Nuclei 2015 Texas, USA, March 2015
Fusion probability in heavy ion induced reac4ons G.N. Knyazheva FLNR, JINR Interna5onal Symposium Superheavy Nuclei 215 Texas, USA, March 215 Fusion probability σ ER = σ cap P CN W sur SHE215 2 Fusion
More informationFission Barriers of Neutron-Deficient Nuclei
Fission Barriers of Neutron-Deficient Nuclei M. Veselsky1,6, A.N. Andreyev2, P. Van Duppen3, M. Huyse3, K. Nishio4, S. Antalic5, M. Venhart1 1Institute of Physics, Slovak Academy of Sciences, Bratislava,
More informationBogdan Fornal. Institute of Nuclear Physics, Polish Academy of Sciences Krakow, Poland. PARIS Workshop, October 14-16, 2009, Kraków, Poland
Bogdan Fornal Institute of Nuclear Physics, Polish Academy of Sciences Krakow, Poland PARIS Workshop, October 14-16, 2009, Kraków, Poland V ( r ) = V WS ( r ) + V ls R 2 0 1 r dv ( r) dr L ˆ S ˆ appearence
More informationMicroscopic Fusion Dynamics Based on TDHF
Dynamical Approach Microscopic Fusion Dynamics Based on TDHF FISSION FUSION Calculate PES as a function of nuclear shape Microscopic HF, HFB, RMF + constraints e.g. Q20, Q30, Q40 as H + lql0 Macroscopic-Microscopic
More informationTowards the Extremes of the Nuclear Landscape. Walter F. Henning - RIKEN Nishina Center
Towards the Extremes of the Nuclear Landscape Walter F. Henning - RIKEN Nishina Center Super heavies Proton drip line Unknown Territory Neutron drip line Super heavies Proton drip line Neutron drip line
More informationIsospin influence on Fragments production in. G. Politi for NEWCHIM/ISODEC collaboration
Isospin influence on Fragments production in 78 Kr + 40 Ca and 86 Kr + 48 Ca collisions at 10 MeV/nucleon G. Politi for NEWCHIM/ISODEC collaboration Dipartimento di Fisica e Astronomia Sezione INFN - Catania,
More informationLOW-LYING STATES OF ODD NUCLEI IN THE SOUTH WEST 208 Pb REGION
LOW-LYING STATES OF ODD NUCLEI IN THE SOUTH WEST 208 Pb REGION F. I. SHARRAD 1,2, A. A. OKHUNOV 1, HEWA Y. ABDULLAH 3,4 and H. ABU KASSIM 1 1 University of Malaya, Faculty of Science, Department of Physics,
More informationDetector Array for Low Intensity radiation. DALI and DALI2. S.Takeuchi, T.Motobayashi. Heavy Ion Nuclear Physics Laboratory, RIKEN
Detector Array for Low Intensity radiation DALI and DALI2 S.Takeuchi, T.Motobayashi Heavy Ion Nuclear Physics Laboratory, RIKEN H.Murakami, K.Demichi, H.Hasegawa, Y.Togano Department of Physics, Rikkyo
More informationTesting the shell closure at N=82 via multinucleon transfer reactions at energies around the Coulomb barrier
Testing the shell closure at N=82 via multinucleon transfer reactions at energies around the Coulomb barrier E. Vardaci 1, E. M. Kozulin 2, D. Quero 1, A. Di Nitto 3, A. Karpov 2, L. Calabretta 4, M. Ashaduzzaman
More informationI. 2. Reduction of the Gamow-Teller Matrix Element for the β-decay in 70 Ga- 70 Zn by the 35-MeV (p,n) Reaction on 70 Zn
CYRIC Annual Report 2003 I. 2. Reduction of the Gamow-Teller Matrix Element for the β-decay in Ga- Zn by the 35-MeV (p,n) Reaction on Zn Orihara H., Terakawa A. *, Suzuki H. *, Kikuchi Y. *, Kumagai K.
More informationFission-yield data. Karl-Heinz Schmidt
Fission-yield data Karl-Heinz Schmidt Topical day From nuclear data to a reliable estimate of spent fuel decay heat October 26, 2017 SCK CEN Lakehouse, Mol, Belgium Lay out Introduction Stages of the fission
More informationThe neutron multiplicity study at spontaneous fission of short-lived isotopes (z > 100) using VASSILISSA recoil separator
The neutron multiplicity study at spontaneous fission of short-lived isotopes (z > 100) using VASSILISSA recoil separator Svirikhin A.I. Joint Institute for Nuclear Research, Dubna, Russia Manipal University,
More informationShape coexistence in light Krypton isotopes
Shape coexistence in light Krypton isotopes Introduction : Shape coexistence Safe Coulomb excitation of RIBs RDDS Lifetime measurement Results and conclusions Andreas Görgen DAPNIA / Service de Physique
More informationBasic Nuclear Theory. Lecture 1 The Atom and Nuclear Stability
Basic Nuclear Theory Lecture 1 The Atom and Nuclear Stability Introduction Nuclear power is made possible by energy emitted from either nuclear fission or nuclear fusion. Current nuclear power plants utilize
More informationCitation EPJ Web of Conferences (2014), provided the original work is prope
TitleStudy of heavy-ion induced fission Nishio, K.; Ikezoe, H.; Hofmann, S. Ackermann, D.; Antalic, S.; Aritomo Düllman, Ch.E.; Gorshkov, A.; Graeg Author(s) J.A.; Hirose, K.; Khuyagbaatar, J.; Lommel,
More informationNuclear Reactions. Shape, interaction, and excitation structures of nuclei. scattered particles. detector. solid angle. target. transmitted particles
Nuclear Reactions Shape, interaction, and excitation structures of nuclei scattering expt. scattered particles detector solid angle projectile target transmitted particles http://www.th.phys.titech.ac.jp/~muto/lectures/qmii11/qmii11_chap21.pdf
More informationIn-flight RI beam separator BigRIPS at RIKEN and elsewhere in Japan
Nuclear Instruments and Methods in Physics Research B 204 (2003) 97 113 www.elsevier.com/locate/nimb In-flight RI beam separator BigRIPS at RIKEN and elsewhere in Japan Toshiyuki Kubo * RIKEN (Institute
More informationHigh-spin studies and nuclear structure in three semi-magic regions of the nuclide chart High-seniority states in Sn isotopes
High-spin studies and nuclear structure in three semi-magic regions of the nuclide chart High-seniority states in Sn isotopes Outline: Alain Astier, CSNSM Orsay, France Motivations Experimental conditions
More informationIntroduction to Nuclear Physics
1/3 S.PÉRU The nucleus a complex system? What is the heaviest nucleus? How many nuclei do exist? What about the shapes of the nuclei? I) Some features about the nucleus discovery radius, shape binding
More informationTDHF Basic Facts. Advantages. Shortcomings
TDHF Basic Facts Advantages! Fully microscopic, parameter-free description of nuclear collisions! Use same microscopic interaction used in static calculations! Successful in describing low-energy fusion,
More informationHeavy-ion fusion reactions and superheavy elements. Kouichi Hagino
Heavy-ion fusion reactions and superheavy elements Kouichi Hagino Tohoku University, Sendai, Japan 1. H.I. fusion reactions: why are they interesting? 2. Coupled-channels approach 3. Future perspectives:
More informationMichiharu Wada for the SHE-Mass Collaboration KEK, Wako Nuclear Science Center
Michiharu Wada for the SHE-Mass Collaboration KEK, Wako Nuclear Science Center NUSTAR Meeting 2018 Why Atomic Mass? Mass Deficit = Binding Energy B p p p p Σ constituents Atomic mass Atom is 1% lighter
More informationNew theoretical insights on the physics of compound nuclei from laser-nucleus reactions
New theoretical insights on the physics of compound nuclei from laser-nucleus reactions Adriana Pálffy Max Planck Institute for Nuclear Physics, Heidelberg, Germany Laser-Driven Radiation Sources for Nuclear
More informationFusion Barrier of Super-heavy Elements in a Generalized Liquid Drop Model
Commun. Theor. Phys. (Beijing, China) 42 (2004) pp. 594 598 c International Academic Publishers Vol. 42, No. 4, October 15, 2004 Fusion Barrier of Super-heavy Elements in a Generalized Liquid Drop Model
More informationStudy of multinucleon transfer (MNT) reactions of 136 Xe Pt for production of exotic nuclei
16 th ASRC International Workshop Mar. 19, 2014 Study of multinucleon transfer (MNT) reactions of 136 Xe + 198 Pt for production of exotic nuclei Contents Y.X. Watanabe (KEK) 1. Introduction (MNT reactions
More information