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Title: High-resolution angle-resolved measurements in atoms and molecules using advanced photoelectron spectroscopy at the ALS

Abstract

A two-dimensional photoelectron imaging technique using time-of-flight spectrometry and a high-resolution SES-200 electron energy analyzer have been used with photons from the atomic and molecular undulator beamline of the Advanced Light Source to study the structure and dynamics of atoms and molecules. The analyzers are rotatable around the direction of the photon beam, allowing angular-dependent studies to be performed. Results on the photoexcitation and decay mechanisms of doubly excited resonances in neon illustrate the importance of spin-orbit effects for such a light atom, since significant breakdown of LS-coupling was measured for such a light atom. Also, fully vibrationally resolved Auger electron spectra measured under Resonant Raman conditions following the C 1s(R)p* excitation in a diatomic molecule, CO, is presented which allows us to probe the core excited states, their excitation and de-excitation dynamics with unprecedented resolution.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Science. Office of Basic Energy Sciences. Chemical Sciences Geosciences and Biosciences Division, Materials Sciences and Engineering Division (US)
OSTI Identifier:
834415
Report Number(s):
LBNL-45948
Journal ID: ISSN 0368-2048; JESRAW; R&D Project: 458112; TRN: US0407111
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Journal of Electron Spectroscopy and Related Phenomena
Additional Journal Information:
Journal Volume: 101-103; Journal Issue: 1; Other Information: Journal Publication Date: June 1999; PBD: 2 Sep 2004; Journal ID: ISSN 0368-2048
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 74 ATOMIC AND MOLECULAR PHYSICS; ADVANCED LIGHT SOURCE; ATOMS; BREAKDOWN; DECAY; DE-EXCITATION; ELECTRON SPECTRA; ELECTRONS; EXCITATION; EXCITED STATES; NEON; PHOTOELECTRON SPECTROSCOPY; PHOTON BEAMS; PHOTONS; PROBES; RESOLUTION; SPECTROSCOPY; WIGGLER MAGNETS; PHOTOELECTRON SPECTROSCOPY SYNCHROTRON RADIATION HIGH RESOLUTION ANGLE RESOLVED

Citation Formats

Berrah, N, Langer, B, Wills, A A, Kukk, E, Bozek, J D, Farhat, A, and Gorczyca, T W. High-resolution angle-resolved measurements in atoms and molecules using advanced photoelectron spectroscopy at the ALS. United States: N. p., 2004. Web.
Berrah, N, Langer, B, Wills, A A, Kukk, E, Bozek, J D, Farhat, A, & Gorczyca, T W. High-resolution angle-resolved measurements in atoms and molecules using advanced photoelectron spectroscopy at the ALS. United States.
Berrah, N, Langer, B, Wills, A A, Kukk, E, Bozek, J D, Farhat, A, and Gorczyca, T W. 2004. "High-resolution angle-resolved measurements in atoms and molecules using advanced photoelectron spectroscopy at the ALS". United States.
@article{osti_834415,
title = {High-resolution angle-resolved measurements in atoms and molecules using advanced photoelectron spectroscopy at the ALS},
author = {Berrah, N and Langer, B and Wills, A A and Kukk, E and Bozek, J D and Farhat, A and Gorczyca, T W},
abstractNote = {A two-dimensional photoelectron imaging technique using time-of-flight spectrometry and a high-resolution SES-200 electron energy analyzer have been used with photons from the atomic and molecular undulator beamline of the Advanced Light Source to study the structure and dynamics of atoms and molecules. The analyzers are rotatable around the direction of the photon beam, allowing angular-dependent studies to be performed. Results on the photoexcitation and decay mechanisms of doubly excited resonances in neon illustrate the importance of spin-orbit effects for such a light atom, since significant breakdown of LS-coupling was measured for such a light atom. Also, fully vibrationally resolved Auger electron spectra measured under Resonant Raman conditions following the C 1s(R)p* excitation in a diatomic molecule, CO, is presented which allows us to probe the core excited states, their excitation and de-excitation dynamics with unprecedented resolution.},
doi = {},
url = {https://www.osti.gov/biblio/834415}, journal = {Journal of Electron Spectroscopy and Related Phenomena},
issn = {0368-2048},
number = 1,
volume = 101-103,
place = {United States},
year = {2004},
month = {9}
}