Electron spectroscopy Lecture Kai M. Siegbahn ( ) Nobel Price 1981 High resolution Electron Spectroscopy
|
|
- Jemimah Bradley
- 6 years ago
- Views:
Transcription
1 Electron spectroscopy Lecture 1-21 Kai M. Siegbahn ( ) Nobel Price 1981 High resolution Electron Spectroscopy
2 653: Electron Spectroscopy urse structure cture 1. Introduction to electron spectroscopies cture 2. Ultraviolet photoelectron spectroscopy: introduction cture 3-4. Electron spectroscopies: experimental methods cture 5-7. Interpretation of UPS, complications, computational methods cture XPS: spectra, interpretation, basic theory of photoelectron spectroscopy
3 Lecture 13-15: Complications of photoemission, many body effects Lecture 16-17: Auger electron spectroscopy Lecture 18-19: Electron spectroscopy case studies: evolution of metallicity, C60, conductivity Lecture 20-21: Electron spectroscopy case studies: surfaces Lecture 22-23: Electron spectroscopy case studies: solids, electronic structure Lecture 24-25: Electron spectroscopy case studies: catalysis
4 Lecture 26-27: Electron spectroscopy case studies: monolayers, LBs Lecture 28-29: Electron energy loss spectroscopy of core levels Lecture 30-31: Electron energy loss spectroscopy of molecules and surfaces Lecture 32-33: Bremstrahlung isochromat spectroscopy Lecture 34: Electron spectroscopy with advanced light sources Lecture 35: Electron spectroscopy: current research
5 ferences Hufner, Photoelectron Spectroscopy, Springer-Verlag, Berlin, C. Smith, Surface Analysis by Electron Spectroscopy, Plenum, New Yor 94. R. Bundle and A. D. Baker (Ed.), Electron Spectroscopy, Vol. 2,, Academi w York, iggs and Seah, Practical Surface Analysis, John Wiley, New York, 1983.
6 J. Berkowitz, Photoabsorption, Photoionization and Photoelectron Spectroscopy, Academic Press, New York T.A. Carlson, Photoelectronand Auger Spectroscopy, Plenum Press, New York, 1975 D. A. Shirley, Ed., Electron Spectroscopy, North-Holland, Amsterdam, K. Siegbahn, C. Nordling, G. Johansson, J. Hedman, P. F. Heden, K. Hamrin, U. Gelius, T. Bergmark, L. O. Werme, R. Manne, and Y. Baer, ESCA Applied to Free Molecules, North-Holland, Amsterdam, Reviews, papers
7 Broad class of spectroscopic techniques, collectively called electron spectroscopy. In general terms, electron spectroscopy can be defined as the energy analysis of electrons ejected or reflected from materials. All of these spectroscopic techniques yield information on the ELECTRONIC STRUCTURE.
8 There are, generally five techniques collectively called electron spectroscopy
9 X-ray photoelectron spectroscopy (XPS) Ultraviolet photoelectron spectroscopy (UPS) Aüger electron spectroscopy (AES) Electron energy loss spectroscopy (EELS) Inverse photoemission spectroscopy (IPS)
10 There are a range of techniques in each of these UPS Photon source variation He I 21.2 ev He II 40.8 ev Ne I Synchrotron radiation
11 UPS Variations of the same basic technique One photon spectroscopy Solids Gases Gas cell Molecular beams
12 Photoelectron-photoion coincidence spectroscopy Zero-kinetic energy photoelectron spectroscopy Multiphoton photoelectron spectroscopy Photodetachment spectroscopy..
13 Structure and Properties of Matter Spectroscopy Scattering Physical Properties Spectroscopy (pre-1965) Absorption Magnetic Mass
14 Spectroscopy using electrons e + M +, M 2+ E e + M + M + Current I 4 I 3 I 2 I 1 Electron KE Ionization efficiency curves Detector
15 h + M + Detecto M + current I 1 I 2 I 3 I 4 Photon Energy
16 h + M M + + e h Constant + (No M 2+, generally) M + + e Photoelectron Spectroscopy Photoelectric effect Early experiments in 1887 Detector KE h = KE
17 Photoion can be excited M + h M + (E int ) + e elec vib rot h -I -E int KE of the electron
18 Conservation of momentum requires that excess energy is partitioned in inverse proportion to the masses. Excited ionic states e I 1 * h M + I 1 M I 2 E int I p h
19 Electron and ion separates with equal momenta. mu = MU The relative velocity, V = u + U = U (1+ M/m) = u (1+ m/m) The kinetic energies, ½ MU 2 = 1 m MV 2 m+m 2M ½ mu 2 = 1 m MV 2 2m m+m
20 h - (I p + E int ) h - KE KE I p + E int h -KE 1 IP 1 h -KE 2 IP 2 h -KE 3 IP 3.. E int o h - KE I p Vertical adiabatic E r e
21 Depth of analysis depends on photon energy He I 21.2 ev 2 1 P 1 1 S He II 40.8 ev 2 P 1 S of He + 3 / Al K 1, ev 2 P 2, 1 / 2 1 S Mg K 1, ev Na K 1, ev Si K 1, ev 1000 Core Valence uv Hard X rays Soft X rays
22
23 Aüger electron e h e h Photoemission X-ray fluorescence Aüger process
24 e e Vac 2, 3 (Z) L 1 (Z) L 2, 3 (z+ z) K(Z) Neutral atom Photo emission Electronic transition Coulomb field redistribution Aügur electron emission Final state
25 E K, L 1, L2, 3 = E k -E L1 - E L 2, 3 E ABC (Z) = E A (Z) - ½ [ E B (Z) + E B (Z+1) ]- ½ [ E C (Z) + E C (Z+1) E s are the binding energies. E ABC K L 1 L 2, 3, K L 1 V, KVV Intense Auger intensities if the valence electron density is high. Fluorescence efficiency increases with transition energy. Fluorescence and Auger are comparable when ~, ev.
26 VALENCE SHELL PHOTOELECTRON SPECTROSCOPY
27 Counts / sec ( A ) ( B ) M + Ionization Energy ( 1 ) ( 2 ) ( 3 ) M ( C ) M + ( 3 ) ( 2 ) ( 1 ) I 1 I 2 I 3 M
28 INTERNUCLEAR DISTANCE
29 P g non bonding 2345 to 2191 cm -1 P u bonding 2345 to 1850 cm -1 S u weakly antibonding 2345 to 2397 cm -1 E v = E o + e (v + ½) - e x e (v + ½) 2 D e = 2 / 4 e x e
30 HeI UPS of H 2 Vibrations and Rotations!
31 ORE LEVEL PHOTOELECTRON SPECTROSCOPY
32 XPS-spectra of the ls core levels of Li, Be, B, C, N, O, F (from S. Hüfner).
33 Counting Rate Binding energy ev
34 Counting Rate Chemical Shift E B =291.2eV
35 INSTRUMENTATION
36 Simplest spectrometer
37 To diffusion pump metal shields h (584 Å) Gas sample Electro countin system
38 Synchrotron Radiation and XPS ELECTRON BEAM Layout of the synchrotron radiation laboratory at DORIS.
An introduction to X- ray photoelectron spectroscopy
An introduction to X- ray photoelectron spectroscopy X-ray photoelectron spectroscopy belongs to a broad class of spectroscopic techniques, collectively called, electron spectroscopy. In general terms,
More information5) Surface photoelectron spectroscopy. For MChem, Spring, Dr. Qiao Chen (room 3R506) University of Sussex.
For MChem, Spring, 2009 5) Surface photoelectron spectroscopy Dr. Qiao Chen (room 3R506) http://www.sussex.ac.uk/users/qc25/ University of Sussex Today s topics 1. Element analysis with XPS Binding energy,
More informationAdvanced Lab Course. X-Ray Photoelectron Spectroscopy 1 INTRODUCTION 1 2 BASICS 1 3 EXPERIMENT Qualitative analysis Chemical Shifts 7
Advanced Lab Course X-Ray Photoelectron Spectroscopy M210 As of: 2015-04-01 Aim: Chemical analysis of surfaces. Content 1 INTRODUCTION 1 2 BASICS 1 3 EXPERIMENT 3 3.1 Qualitative analysis 6 3.2 Chemical
More informationX-Ray Photoelectron Spectroscopy (XPS)
X-Ray Photoelectron Spectroscopy (XPS) Louis Scudiero http://www.wsu.edu/~scudiero; 5-2669 Fulmer 261A Electron Spectroscopy for Chemical Analysis (ESCA) The basic principle of the photoelectric effect
More informationElectron Spectroscopy
Electron Spectroscopy Photoelectron spectroscopy is based upon a single photon in/electron out process. The energy of a photon is given by the Einstein relation : E = h ν where h - Planck constant ( 6.62
More informationLecture 5. X-ray Photoemission Spectroscopy (XPS)
Lecture 5 X-ray Photoemission Spectroscopy (XPS) 5. Photoemission Spectroscopy (XPS) 5. Principles 5.2 Interpretation 5.3 Instrumentation 5.4 XPS vs UV Photoelectron Spectroscopy (UPS) 5.5 Auger Electron
More informationX-Ray Photoelectron Spectroscopy (XPS)
X-Ray Photoelectron Spectroscopy (XPS) Louis Scudiero http://www.wsu.edu/~scudiero; 5-2669 Electron Spectroscopy for Chemical Analysis (ESCA) The basic principle of the photoelectric effect was enunciated
More informationIV. Surface analysis for chemical state, chemical composition
IV. Surface analysis for chemical state, chemical composition Probe beam Detect XPS Photon (X-ray) Photoelectron(core level electron) UPS Photon (UV) Photoelectron(valence level electron) AES electron
More informationElectron Spettroscopies
Electron Spettroscopies Spettroscopy allows to characterize a material from the point of view of: chemical composition, electronic states and magnetism, electronic, roto-vibrational and magnetic excitations.
More informationLecture 7 Chemical/Electronic Structure of Glass
Lecture 7 Chemical/Electronic Structure of Glass Syllabus Topic 6. Electronic spectroscopy studies of glass structure Fundamentals and Applications of X-ray Photoelectron Spectroscopy (XPS) a.k.a. Electron
More informationMethods of surface analysis
Methods of surface analysis Nanomaterials characterisation I RNDr. Věra Vodičková, PhD. Surface of solid matter: last monoatomic layer + absorbed monolayer physical properties are effected (crystal lattice
More informationFig Photoemission process.
1.1 Photoemission process (Ref. 3.1, P. 43) When a sample surface is irradiated with photons of energy hυ, electrons are emitted from the sample surface. Figure 1.1.1 shows the essence of this photoemission
More informationIntroduction to X-ray Photoelectron Spectroscopy (XPS) XPS which makes use of the photoelectric effect, was developed in the mid-1960
Introduction to X-ray Photoelectron Spectroscopy (XPS) X-ray Photoelectron Spectroscopy (XPS), also known as Electron Spectroscopy for Chemical Analysis (ESCA) is a widely used technique to investigate
More informationPHOTOELECTRON SPECTROSCOPY (PES)
PHOTOELECTRON SPECTROSCOPY (PES) NTRODUCTON Law of Photoelectric effect Albert Einstein, Nobel Prize 1921 Kaiser-Wilhelm-nstitut (now Max-Planck- nstitut) für Physik Berlin, Germany High-resolution electron
More informationX-Ray Photoelectron Spectroscopy (XPS)-2
X-Ray Photoelectron Spectroscopy (XPS)-2 Louis Scudiero http://www.wsu.edu/~scudiero; 5-2669 Fulmer 261A Electron Spectroscopy for Chemical Analysis (ESCA) The 3 step model: 1.Optical excitation 2.Transport
More informationPhotoelectron Spectroscopy. Xiaozhe Zhang 10/03/2014
Photoelectron Spectroscopy Xiaozhe Zhang 10/03/2014 A conception last time remain Secondary electrons are electrons generated as ionization products. They are called 'secondary' because they are generated
More informationX-ray Photoelectron Spectroscopy (XPS)
X-ray Photoelectron Spectroscopy (XPS) As part of the course Characterization of Catalysts and Surfaces Prof. Dr. Markus Ammann Paul Scherrer Institut markus.ammann@psi.ch Resource for further reading:
More informationCore Level Spectroscopies
Core Level Spectroscopies Spectroscopies involving core levels are element-sensitive, and that makes them very useful for understanding chemical bonding, as well as for the study of complex materials.
More informationBonds in molecules are formed by the interactions between electrons.
CHEM 2060 Lecture 6: Electrostatic Interactions L6-1 PART TWO: Electrostatic Interactions In the first section of this course, we were more concerned with structural aspects of molecules. In this section
More informationLecture 20 Auger Electron Spectroscopy
Lecture 20 Auger Electron Spectroscopy Auger history cloud chamber Although Auger emission is intense, it was not used until 1950 s. Evolution of vacuum technology and the application of Auger Spectroscopy
More informationX-Ray Photoelectron Spectroscopy (XPS)-2
X-Ray Photoelectron Spectroscopy (XPS)-2 Louis Scudiero http://www.wsu.edu/~pchemlab ; 5-2669 Fulmer 261A Electron Spectroscopy for Chemical Analysis (ESCA) The 3 step model: 1.Optical excitation 2.Transport
More informationInelastic soft x-ray scattering, fluorescence and elastic radiation
Inelastic soft x-ray scattering, fluorescence and elastic radiation What happens to the emission (or fluorescence) when the energy of the exciting photons changes? The emission spectra (can) change. One
More informationLecture 5-8 Instrumentation
Lecture 5-8 Instrumentation Requirements 1. Vacuum Mean Free Path Contamination Sticking probability UHV Materials Strength Stability Permeation Design considerations Pumping speed Virtual leaks Leaking
More informationLecture 17 Auger Electron Spectroscopy
Lecture 17 Auger Electron Spectroscopy Auger history cloud chamber Although Auger emission is intense, it was not used until 1950 s. Evolution of vacuum technology and the application of Auger Spectroscopy
More informationHe, Ne, and Ar have shells.
5.111 Lecture Summary #8 Monday September 22, 2014 Readings for today: Section 1.14 Electronic Structure and the Periodic Table, Section 1.15, 1.16, 1.17, 1.18, and 1.20 - The Periodicity of Atomic Properties.
More informationAn Introduction to Diffraction and Scattering. School of Chemistry The University of Sydney
An Introduction to Diffraction and Scattering Brendan J. Kennedy School of Chemistry The University of Sydney 1) Strong forces 2) Weak forces Types of Forces 3) Electromagnetic forces 4) Gravity Types
More informationX-Ray Photoelectron Spectroscopy (XPS) Auger Electron Spectroscopy (AES)
X-Ray Photoelectron Spectroscopy (XPS) Auger Electron Spectroscopy (AES) XPS X-ray photoelectron spectroscopy (XPS) is one of the most used techniques to chemically characterize the surface. Also known
More informationMS482 Materials Characterization ( 재료분석 ) Lecture Note 2: UPS
2016 Fall Semester MS482 Materials Characterization ( 재료분석 ) Lecture Note 2: UPS Byungha Shin Dept. of MSE, KAIST 1 Course Information Syllabus 1. Overview of various characterization techniques (1 lecture)
More informationSynthesis of Cu/Ni thin film by thermal evaporation technique and its XPS study
Orissa Journal of Physics ISSN 0974-8202 Orissa Physical Society Vol. 22, No.2 August 2015 pp. 205-212 Synthesis of Cu/Ni thin film by thermal evaporation technique and its XPS study S.K. PARIDA Department
More informationEmphasis on what happens to emitted particle (if no nuclear reaction and MEDIUM (i.e., atomic effects)
LECTURE 5: INTERACTION OF RADIATION WITH MATTER All radiation is detected through its interaction with matter! INTRODUCTION: What happens when radiation passes through matter? Emphasis on what happens
More informationUltraviolet Photoelectron Spectroscopy (UPS)
Ultraviolet Photoelectron Spectroscopy (UPS) Louis Scudiero http://www.wsu.edu/~scudiero www.wsu.edu/~scudiero; ; 5-26695 scudiero@wsu.edu Photoemission from Valence Bands Photoelectron spectroscopy is
More informationX-Ray Photoelectron Spectroscopy (XPS) Prof. Paul K. Chu
X-Ray Photoelectron Spectroscopy (XPS) Prof. Paul K. Chu X-ray Photoelectron Spectroscopy Introduction Qualitative analysis Quantitative analysis Charging compensation Small area analysis and XPS imaging
More informationBirck Nanotechnology Center XPS: X-ray Photoelectron Spectroscopy ESCA: Electron Spectrometer for Chemical Analysis
Birck Nanotechnology Center XPS: X-ray Photoelectron Spectroscopy ESCA: Electron Spectrometer for Chemical Analysis Dmitry Zemlyanov Birck Nanotechnology Center, Purdue University Outline Introduction
More informationLow Energy Electrons and Surface Chemistry
G. Ertl, J. Küppers Low Energy Electrons and Surface Chemistry VCH 1 Basic concepts 1 1.1 Introduction 1 1.2 Principles of ultrahigh vacuum techniques 2 1.2.1 Why is UHV necessary? 2 1.2.2 Production of
More informationName: (a) What core levels are responsible for the three photoelectron peaks in Fig. 1?
Physics 243A--Surface Physics of Materials: Spectroscopy Final Examination December 16, 2014 (3 problems, 100 points total, open book, open notes and handouts) Name: [1] (50 points), including Figures
More informationGroup Members: Your Name In Class Exercise #6. Photon A. Energy B
Group Members: Your Name In Class Exercise #6 Shell Structure of Atoms Part II Photoelectron Spectroscopy Photoelectron spectroscopy is closely related to the photoelectric effect. When high energy photons
More informationPhoton Interaction. Spectroscopy
Photon Interaction Incident photon interacts with electrons Core and Valence Cross Sections Photon is Adsorbed Elastic Scattered Inelastic Scattered Electron is Emitted Excitated Dexcitated Stöhr, NEXAPS
More informationValence and Core Electron Spectra of Mg in MgO in Evoporated Thin Films
Valence and Core Electron Spectra of Mg in MgO in Evoporated Thin Films N. C. Haider and J. Alonso, Jr. Department of Physics, University of South Florida Tampa, Florida 33620 and W. E. Swartz, Jr. Department
More informationShell Atomic Model and Energy Levels
Shell Atomic Model and Energy Levels (higher energy, deeper excitation) - Radio waves: Not absorbed and pass through tissue un-attenuated - Microwaves : Energies of Photos enough to cause molecular rotation
More informationMODERN TECHNIQUES OF SURFACE SCIENCE
MODERN TECHNIQUES OF SURFACE SCIENCE Second edition D. P. WOODRUFF & T. A. DELCHAR Department ofphysics, University of Warwick CAMBRIDGE UNIVERSITY PRESS Contents Preface to first edition Preface to second
More informationX-Rays, Electrons and Lithography: Fundamental Processes in Molecular Radiation Chemistry
X-Rays, Electrons and Lithography: Fundamental Processes in Molecular Radiation Chemistry D. Frank Ogletree Molecular Foundry, Berkeley Lab Berkeley CA USA Our Berkeley Lab Team EUV Lithography and Pattern
More informationPhotoelectron Spectroscopy Evidence for Electronic Structure Guided-Inquiry Learning Activity for AP* Chemistry
Introduction Photoelectron Spectroscopy Evidence for Electronic Structure Guided-Inquiry Learning Activity for AP* Chemistry Catalog No. AP7710 Publication No. 7710AS The chemical properties of elements
More informationProbing Matter: Diffraction, Spectroscopy and Photoemission
Probing Matter: Diffraction, Spectroscopy and Photoemission Anders Nilsson Stanford Synchrotron Radiation Laboratory Why X-rays? VUV? What can we hope to learn? 1 Photon Interaction Incident photon interacts
More information4. How can fragmentation be useful in identifying compounds? Permits identification of branching not observed in soft ionization.
Homework 9: Chapters 20-21 Assigned 12 April; Due 17 April 2006; Quiz on 19 April 2006 Chap. 20 (Molecular Mass Spectroscopy) Chap. 21 (Surface Analysis) 1. What are the types of ion sources in molecular
More informationX-ray Energy Spectroscopy (XES).
X-ray Energy Spectroscopy (XES). X-ray fluorescence as an analytical tool for element analysis is based on 3 fundamental parameters: A. Specificity: In determining an x-ray emission energy E certainty
More informationMulti-electron coincidence spectroscopy: double photoionization from molecular inner-shell orbitals
Journal of Physics: Conference Series OPEN ACCESS Multi-electron coincidence spectroscopy: double photoionization from molecular inner-shell orbitals To cite this article: Y Hikosaka et al 2014 J. Phys.:
More informationMolecular Orbital Theory
Molecular Orbital Theory 1. MO theory suggests that atomic orbitals of different atoms combine to create MOLECULAR ORBITALS 2. Electrons in these MOLECULAR ORBITALS belong to the molecule as whole 3. This
More informationATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY
ATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY All matter is made of atoms. There are a limited number of types of atoms; these are the elements. (EU 1.A) Development of Atomic Theory Atoms are so small
More informationELECTRON EMISSION SPECTROSCOPY
ELECTRON EMISSION SPECTROSCOPY ELECTRON EMISSION SPECTROSCOPY PROCEEDINGS OF THE NATO SUMMER INSTITUTE HELD AT THE UNIVERSITY OF GENT, AUGUST 28 - SEPTEMBER 7, 1972 Edited by W. DEKEYSER, L. FIERMANS,
More informationPhotoelectron Peak Intensities in Solids
Photoelectron Peak Intensities in Solids Electronic structure of solids Photoelectron emission through solid Inelastic scattering Other excitations Intrinsic and extrinsic Shake-up, shake-down and shake-off
More informationLecture 22 Ion Beam Techniques
Lecture 22 Ion Beam Techniques Schroder: Chapter 11.3 1/44 Announcements Homework 6/6: Will be online on later today. Due Wednesday June 6th at 10:00am. I will return it at the final exam (14 th June).
More informationEnergy Spectroscopy. Excitation by means of a probe
Energy Spectroscopy Excitation by means of a probe Energy spectral analysis of the in coming particles -> XAS or Energy spectral analysis of the out coming particles Different probes are possible: Auger
More informationAppearance Potential Spectroscopy
Appearance Potential Spectroscopy Submitted by Sajanlal P. R CY06D009 Sreeprasad T. S CY06D008 Dept. of Chemistry IIT MADRAS February 2006 1 Contents Page number 1. Introduction 3 2. Theory of APS 3 3.
More informationThe photoelectric effect
The photoelectric effect E K hν-e B E F hν E B A photoemission experiment Lifetime broadening ΔE.Δτ~ħ ΔE~ħ/Δτ + Experimental resolution Hüfner, Photoelectron Spectroscopy (Springer) A photoemission experiment
More informationRadiation Physics PHYS /251. Prof. Gocha Khelashvili
Radiation Physics PHYS 571-051/251 Prof. Gocha Khelashvili Interaction of Radiation with Matter: Heavy Charged Particles Directly and Indirectly Ionizing Radiation Classification of Indirectly Ionizing
More informationPhotoelectron Spectroscopy
32 ChemActivity 8 Photoelectron Spectroscopy (What Is Photoelectron Spectroscopy?) From our previous examination of the ionization energies of the atoms, we proposed a shell model of the atom, and noted
More informationEnergy Spectroscopy. Ex.: Fe/MgO
Energy Spectroscopy Spectroscopy gives access to the electronic properties (and thus chemistry, magnetism,..) of the investigated system with thickness dependence Ex.: Fe/MgO Fe O Mg Control of the oxidation
More information5.8 Auger Electron Spectroscopy (AES)
5.8 Auger Electron Spectroscopy (AES) 5.8.1 The Auger Process X-ray and high energy electron bombardment of atom can create core hole Core hole will eventually decay via either (i) photon emission (x-ray
More informationSurface Analysis - The Principal Techniques
Surface Analysis - The Principal Techniques Edited by John C. Vickerman Surface Analysis Research Centre, Department of Chemistry UMIST, Manchester, UK JOHN WILEY & SONS Chichester New York Weinheim Brisbane
More informationX-Ray transitions to low lying empty states
X-Ray Spectra: - continuous part of the spectrum is due to decelerated electrons - the maximum frequency (minimum wavelength) of the photons generated is determined by the maximum kinetic energy of the
More informationThe Use of Synchrotron Radiation in Modern Research
The Use of Synchrotron Radiation in Modern Research Physics Chemistry Structural Biology Materials Science Geochemical and Environmental Science Atoms, molecules, liquids, solids. Electronic and geometric
More informationQuantum Mechanics. Particle in a box All were partial answers, leading Schrödinger to wave mechanics
Chemistry 4521 Time is flying by: only 15 lectures left!! Six quantum mechanics Four Spectroscopy Third Hour exam Three statistical mechanics Review Final Exam, Wednesday, May 4, 7:30 10 PM Quantum Mechanics
More informationRecommendations for abbreviations in surface science and chemical spectroscopy. (1) The electron, photoelectron and related spectroscopies
17.6.3 Recommendations for abbreviations in surface science and chemical spectroscopy The overall list of selected techniques and their abbreviations have been subdivided under the following principal
More informationStudying Metal to Insulator Transitions in Solids using Synchrotron Radiation-based Spectroscopies.
PY482 Lecture. February 28 th, 2013 Studying Metal to Insulator Transitions in Solids using Synchrotron Radiation-based Spectroscopies. Kevin E. Smith Department of Physics Department of Chemistry Division
More informationBa (Z = 56) W (Z = 74) preferred target Mo (Z = 42) Pb (Z = 82) Pd (Z = 64)
Produced by accelerating electrons with high voltage and allowing them to collide with metal target (anode), e.g, Tungsten. Three Events (Two types of x-ray) a) Heat X-Ray Tube b) bremsstrahlung (braking
More informationMa4: X-ray photoelectron spectroscopy (XPS)
Ma4: X-ray photoelectron spectroscopy (XPS) Contents 1. Overview on the topic and summary of the objectives............. 3 2. Theoretical Fundamentals............................ 3 2.1 Characteristic excitation
More informationQUESTIONS AND ANSWERS
QUESTIONS AND ANSWERS (1) For a ground - state neutral atom with 13 protons, describe (a) Which element this is (b) The quantum numbers, n, and l of the inner two core electrons (c) The stationary state
More informationATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY
ATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY All matter is made of atoms. There are a limited number of types of atoms; these are the elements. (EU 1.A) Development of Atomic Theory Atoms are so small
More informationPhotoelectron spectroscopy Instrumentation. Nanomaterials characterization 2
Photoelectron spectroscopy Instrumentation Nanomaterials characterization 2 RNDr. Věra V Vodičkov ková,, PhD. Photoelectron Spectroscopy general scheme Impact of X-ray emitted from source to the sample
More informationElectron and electromagnetic radiation
Electron and electromagnetic radiation Generation and interactions with matter Stimuli Interaction with sample Response Stimuli Waves and energy The energy is propotional to 1/λ and 1/λ 2 λ λ 1 Electromagnetic
More informationMS482 Materials Characterization ( 재료분석 ) Lecture Note 4: XRF
2016 Fall Semester MS482 Materials Characterization ( 재료분석 ) Lecture Note 4: XRF Byungha Shin Dept. of MSE, KAIST 1 Course Information Syllabus 1. Overview of various characterization techniques (1 lecture)
More informationChapter 7 Introduction to Spectroscopy
Name AP CHEM / / Chapter 7 Introduction to Spectroscopy Spectroscopy is the study of the interaction of radiant energy and matter. The electromagnetic spectrum diagram is shown below to use a reference.
More information8.6 Relaxation Processes
CHAPTER 8. INNER SHELLS 175 Figure 8.17: Splitting of the 3s state in Fe which is missing in Zn. Refs. [12,13]. be aligned parallel or antiparallel with the spins of the 3d electrons of iron. 13 Thus we
More informationTable 1.1 Surface Science Techniques (page 19-28) Acronym Name Description Primary Surface Information Adsorption or selective chemisorption (1)
Table 1.1 Surface Science Techniques (page 19-28) Acronym Name Description Primary Surface Information Adsorption or selective chemisorption (1) Atoms or molecules are physisorbed into a porous structure
More informationParticle nature of light & Quantization
Particle nature of light & Quantization A quantity is quantized if its possible values are limited to a discrete set. An example from classical physics is the allowed frequencies of standing waves on a
More informationMSE 321 Structural Characterization
Auger Spectroscopy Auger Electron Spectroscopy (AES) Scanning Auger Microscopy (SAM) Incident Electron Ejected Electron Auger Electron Initial State Intermediate State Final State Physical Electronics
More informationAn Introduction to Auger Electron Spectroscopy
An Introduction to Auger Electron Spectroscopy Spyros Diplas MENA3100 SINTEF Materials & Chemistry, Department of Materials Physics & Centre of Materials Science and Nanotechnology, Department of Chemistry,
More informationAuger Electron Spectroscopy (AES)
1. Introduction Auger Electron Spectroscopy (AES) Silvia Natividad, Gabriel Gonzalez and Arena Holguin Auger Electron Spectroscopy (Auger spectroscopy or AES) was developed in the late 1960's, deriving
More informationMS731M: Chemical Analysis of Materials
(Revised) Course Code and Title Course Coordinator Details of Course MS731M: Chemical Analysis of Materials Dr. Eileen Fong (Course Coordinator) Dr. Thresen Matthew Rationale for introducing this course
More informationLecture 23 X-Ray & UV Techniques
Lecture 23 X-Ray & UV Techniques Schroder: Chapter 11.3 1/50 Announcements Homework 6/6: Will be online on later today. Due Wednesday June 6th at 10:00am. I will return it at the final exam (14 th June).
More information7. Electron spectroscopies
7. Electron spectroscopies 7.1 Energy loss mechanisms - Incoming photons/electrons may excite electronic transitions in the substrate - Spectroscopic techniques focus on obtaining information on this,
More informationU N I T T E S T P R A C T I C E
South Pasadena AP Chemistry Name 8 Atomic Theory Period Date U N I T T E S T P R A C T I C E Part 1 Multiple Choice You should allocate 25 minutes to finish this portion of the test. No calculator should
More informationEDS User School. Principles of Electron Beam Microanalysis
EDS User School Principles of Electron Beam Microanalysis Outline 1.) Beam-specimen interactions 2.) EDS spectra: Origin of Bremsstrahlung and characteristic peaks 3.) Moseley s law 4.) Characteristic
More informationTheoretical approach to estimate radiation damage within FEL irradiated samples. Beata Ziaja
Theoretical approach to estimate radiation damage within FEL irradiated samples Beata Ziaja Hasylab, DESY Hamburg and INP, Krakow Prague, 23-24 November 2006 I. Mechanisms 2 Radiation damage Contribution
More informationINTERACTIONS OF RADIATION WITH MATTER
INTERACTIONS OF RADIATION WITH MATTER Renée Dickinson, MS, DABR Medical Physicist University of Washington Medical Center Department of Radiology Diagnostic Physics Section Outline Describe the various
More informationXPS o ESCA UPS. Photoemission Spectroscopies. Threshold Spectroscopies (NEXAFS, APS etc ) The physics of photoemission.
XPS o ESCA Photoemission Spectroscopies UPS Threshold Spectroscopies (NEXAFS, APS etc ) The physics of photoemission. How are photoemission spectra recorded: sources and analyzers Semi-quantitative analysis.
More informationTHE NATURE OF THE ATOM. alpha particle source
chapter THE NATURE OF THE ATOM www.tutor-homework.com (for tutoring, homework help, or help with online classes) Section 30.1 Rutherford Scattering and the Nuclear Atom 1. Which model of atomic structure
More informationSurface Analysis - The Principal Techniques
Surface Analysis - The Principal Techniques 2nd Edition Editors johnc.vickerman Manchester Interdisciplinary Biocentre, University of Manchester, UK IAN S. GILMORE National Physical Laboratory, Teddington,
More informationPhotoelectron Spectroscopy
Photoelectron Spectroscopy Why? There are many data that have lead to the development of the shell model of the atom such as ionization energy. In this activity we will examine another one of these data
More informationTable 1: Residence time (τ) in seconds for adsorbed molecules
1 Surfaces We got our first hint of the importance of surface processes in the mass spectrum of a high vacuum environment. The spectrum was dominated by water and carbon monoxide, species that represent
More informationX-ray Spectroscopy. Interaction of X-rays with matter XANES and EXAFS XANES analysis Pre-edge analysis EXAFS analysis
X-ray Spectroscopy Interaction of X-rays with matter XANES and EXAFS XANES analysis Pre-edge analysis EXAFS analysis Element specific Sensitive to low concentrations (0.01-0.1 %) Why XAS? Applicable under
More informationAn Introduction to XAFS
An Introduction to XAFS Matthew Newville Center for Advanced Radiation Sources The University of Chicago 21-July-2018 Slides for this talk: https://tinyurl.com/larch2018 https://millenia.cars.aps.anl.gov/gsecars/data/larch/2018workshop
More informationX-ray Photoelectron Spectroscopy/ Electron spectroscopy for chemical analysis (ESCA), By Francis Chindeka
X-ray Photoelectron Spectroscopy/ Electron spectroscopy for chemical analysis (ESCA), By Francis Chindeka X-ray photoelectron spectroscopy (XPS) or Electron spectroscopy for chemical analysis (ESCA), Surface
More informationCharacteristics and Properties of Synchrotron Radiation
Characteristics and Properties of Synchrotron Radiation Giorgio Margaritondo Vice-président pour les affaires académiques Ecole Polytechnique Fédérale de Lausanne (EPFL) Outline: How to build an excellent
More informationPhotoionized Gas Ionization Equilibrium
Photoionized Gas Ionization Equilibrium Ionization Recombination H nebulae - case A and B Strömgren spheres H + He nebulae Heavy elements, dielectronic recombination Ionization structure 1 Ionization Equilibrium
More informationLecture 10. Transition probabilities and photoelectric cross sections
Lecture 10 Transition probabilities and photoelectric cross sections TRANSITION PROBABILITIES AND PHOTOELECTRIC CROSS SECTIONS Cross section = = Transition probability per unit time of exciting a single
More informationX-ray Absorption Spectroscopy. Kishan K. Sinha Department of Physics and Astronomy University of Nebraska-Lincoln
X-ray Absorption Spectroscopy Kishan K. Sinha Department of Physics and Astronomy University of Nebraska-Lincoln Interaction of X-rays with matter Incident X-ray beam Fluorescent X-rays (XRF) Scattered
More informationSpectroscopy of Nanostructures. Angle-resolved Photoemission (ARPES, UPS)
Spectroscopy of Nanostructures Angle-resolved Photoemission (ARPES, UPS) Measures all quantum numbers of an electron in a solid. E, k x,y, z, point group, spin E kin, ϑ,ϕ, hν, polarization, spin Electron
More informationPhotoemission Spectroscopy: Fundamental Aspects
Photoemission Spectroscopy: Fundamental Aspects G. Stefani Dipartimento di Scienze,Universita Roma Tre CNISM Unita di Ricerca di Roma 3 XIV SILS School G. Stefani 1 hn Basic Concepts - E e E, e K e ˆ E
More informationPhotoemission Spectroscopy
FY13 Experimental Physics - Auger Electron Spectroscopy Photoemission Spectroscopy Supervisor: Per Morgen SDU, Institute of Physics Campusvej 55 DK - 5250 Odense S Ulrik Robenhagen,
More information