GSI. SINAP W. Xu, G.W. Fan (HIMAC) :,,,

Transcription

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2 :,,, :, GSI :, :,,, SINAP W. Xu, G.W. Fan : (HIMAC) :,,,

3 12 C

4 "R(E) Glauber Calculation, & )/! R = " db 1# exp #" d 2 P r! NN ( E)$ i T % z (r)$z j I. ( (r - b) ' i,j * 01 σi can be uniquely calculated by 3 quantities! P! Projectile Density T Target Density "NN (E ) "NN Nucleon- Nucleon Total Cross Section! Radius contributing to the R "

5 !! Investigation Measurements of σr for 12 C and 11 Be, 8 B

6 Measurements of "R for 12 C at intermediate energies Experiment@ HIMAC, NIRS Data are compared with Glauber Calc. Expt. > Calc.

7 A. Ozawa et al., Nucl. Phys. A 693, 32 (2001). S. Kox et al., Phys. Rev. C 35 (1987) Takechi et al., Phys. Rev. C79 (2009), (R)

8 Comparison with the Data for Unstable Nuclei 11 Be, 8 B Be + 9 Be, 12 C, and 27 Al B KI00 (HF + HF) r (fm) 11 Be 11 Be 8 B 8 B + Be, C, Al r (fm) HF Densities H. Sagawa and H. Toki, J. Phys. G 13, 453 (1987). and Private Communications M. Fukuda et al., Nucl. Phys. A 656 (1999) 209. I. Tanihata et al., Phys. Lett. 206B (1988) 592 B. Blank et al., Nucl. Phys. A 624 (1997) 242. M. Obuti et al., Nucl. Phys. A609 (1996) 74.

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10 How to Deduce Nucleon Density ! (r) ! (r) : Model Density Change model assumption Parameter! r (fm) Glauber Calculation Feed Back Calculation Compare Again!!! " R(Calc.) Compare " R(Expt.)

11 Nucleon Density Distribution of 17 Ne HO + Yukawa best fit HO + Yukawa Error range HO best fit Hartree-Fock s-wave Hartree-Fock d-wave Density (fm -3 ) r (fm) Phys. Rev. C82 (2010) K. Tanaka et al.

12 Nucleon Density Distribution of 17 Ne HO + SPM best fit HO + SPM error range Hartree-Fock s-wave Hartree-Fock d-wave Density (fm -3 ) r (fm) Phys. Rev. C82 (2010) K. Tanaka et al.

13 Deduced Density using 2s1/2 with S1n=0.97MeV 14 B Nucleon Density (fm -3 ) 2s1/2 SPM Best-Fit Density r (fm)

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15 - σnn pn pp!pn >>!pp ~3 σr σr -σr

16 Pauli Blocking allowed k 2 k 1 k2 k1 k 2 forbidden k 1 k(r) = [3π 2 ρ(r)] 1/3 R. E. Warner et al., PRC 65 (2002) k p (r) = k n (r) L.W.Chen et al., PRC64(2001)

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18 7 Be 9 Be 10 Be 11 Be

19 7 Be 9 Be 10 Be 11 Be

20 7 Be 9 Be 10 Be 11 Be

21 W. Notershauser, et al., PRL 102 (2009)

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23 Beam, Spin, and Deformation Directions spin z spin z negative A positive A

24 Creation of Nuclear Spin Alignment A! A A! J J Beam J Beam J Beam p

25 Cross Section (p) Cross Section Prolate Oblate p

26 11 B Result!( 99 Be)! 9 68A MeV! Reaction rate (center=100) [%] 9 Be + C Momentum [%]

27 RIBF Ne, Mg

28 48 Ca Ne, MgIsland of Inversion "R were measured using BigRIPS (F3 - F7) F7 BigRIPS F5 F3 RIBF

29 Ne M. Takechi et al., Phys. Lett. B 707 (2012) Ne 20 Ne 27 Al Glauber Calculation!R 20 Ne 23 Na 24 Mg

30 M. Takechi et al., Phys. Lett. B 707 (2012) 357. β2 deduced from experimental B(E2) and Q moment 27 Al 20 Ne 23 Na 24 Mg

31 Halo Effect in 29 Ne 28 Ne + 1n model M. Takechi et al., Phys. Lett. B 707 (2012) th neutron s-dominant 28 Ne : H. Iwasaki et al., Phys. Lett. B 620 (2005) Ne : B. V. Pritychenko et al., Phys. Lett. B 461 (1999) 322.

32 Halo Effect in 29 Ne 28 Ne + 1n model M. Takechi et al., Phys. Lett. B 707 (2012) p3/2 (59%) and 0f7/2 (37%) 1s1/2 (74%) and 0d3/2 (16%) 19th neutron s-dominant 28 Ne : H. Iwasaki et al., Phys. Lett. B 620 (2005) Ne : B. V. Pritychenko et al., Phys. Lett. B 461 (1999) 322.

33 Halo Effect in 31 Ne 31 Ne + 1n model M. Takechi et al., Phys. Lett. B 707 (2012) 357. s-dominant 30 Ne : Y. Yanagisawa et al., Phys. Lett. B 566 (2003) 84.

34 Halo Effect in 31 Ne 31 Ne + 1n model M. Takechi et al., Phys. Lett. B 707 (2012) 357. s-dominant 0 f7/2 (70%) and 1p3/2 (22%) 1s1/2 (82%), 0d3/2 (9%) 30 Ne : Y. Yanagisawa et al., Phys. Lett. B 566 (2003) 84.

35 Summary!!R ( 12 C)!!RGlauber+Fermi +!!( 17 Ne, 14 B)!!!! RIBF Ne, Mg!R