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Title: Turn-up effects at low momentum for the highest occupied molecular orbital of oxygen at various impact energies by electron momentum spectroscopy

Abstract

The unexpected higher intensity at low momentum region in (e,2e) ionization cross sections, as called turn-up effect, was observed recently. This work systemically investigated this effect for the highest occupied molecular orbital of oxygen at various impact energies of 400, 600, 800, 1200, 1800, and 2400 eV by electron momentum spectroscopy. This turn-up became higher as the impact energy declined, which can be qualitatively predicted by the distorted wave explanation. However, it may be also due to some other dynamic interaction, such as the dynamic correlation. Since the oxygen molecule is the simplest multicenter system with such effects, this experimental result could be a test-bed for the accurate calculation of this effect in the molecular system.

Authors:
; ; ; ; ;  [1]
  1. Department of Physics and Key Laboratory of Atomic and Molecular NanoSciences of MOE, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
20974575
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.73.022704; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CORRELATIONS; CROSS SECTIONS; DISTORTED WAVE THEORY; ELECTRON SPECTRA; ELECTRONS; EV RANGE 100-1000; INTERACTIONS; IONIZATION; KEV RANGE 01-10; MOLECULAR ORBITAL METHOD; MOLECULES; OXYGEN; SPECTROSCOPY

Citation Formats

Ning, C. G., Ren, X. G., Deng, J. K., Su, G. L., Zhang, S. F., and Li, G. Q. Turn-up effects at low momentum for the highest occupied molecular orbital of oxygen at various impact energies by electron momentum spectroscopy. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.022704.
Ning, C. G., Ren, X. G., Deng, J. K., Su, G. L., Zhang, S. F., & Li, G. Q. Turn-up effects at low momentum for the highest occupied molecular orbital of oxygen at various impact energies by electron momentum spectroscopy. United States. doi:10.1103/PHYSREVA.73.022704.
Ning, C. G., Ren, X. G., Deng, J. K., Su, G. L., Zhang, S. F., and Li, G. Q. Wed . "Turn-up effects at low momentum for the highest occupied molecular orbital of oxygen at various impact energies by electron momentum spectroscopy". United States. doi:10.1103/PHYSREVA.73.022704.
@article{osti_20974575,
title = {Turn-up effects at low momentum for the highest occupied molecular orbital of oxygen at various impact energies by electron momentum spectroscopy},
author = {Ning, C. G. and Ren, X. G. and Deng, J. K. and Su, G. L. and Zhang, S. F. and Li, G. Q.},
abstractNote = {The unexpected higher intensity at low momentum region in (e,2e) ionization cross sections, as called turn-up effect, was observed recently. This work systemically investigated this effect for the highest occupied molecular orbital of oxygen at various impact energies of 400, 600, 800, 1200, 1800, and 2400 eV by electron momentum spectroscopy. This turn-up became higher as the impact energy declined, which can be qualitatively predicted by the distorted wave explanation. However, it may be also due to some other dynamic interaction, such as the dynamic correlation. Since the oxygen molecule is the simplest multicenter system with such effects, this experimental result could be a test-bed for the accurate calculation of this effect in the molecular system.},
doi = {10.1103/PHYSREVA.73.022704},
journal = {Physical Review. A},
number = 2,
volume = 73,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2006},
month = {Wed Feb 15 00:00:00 EST 2006}
}
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