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Title: Absolute generalized oscillator strengths of 2{sup 1}{ital S} and 2{sup 1}{ital P} excitations of helium measured by angle-resolved electron-energy-loss spectroscopy

Abstract

The differential scattering cross sections and the generalized oscillator strengths of the 1{sup 1}{ital S}{r_arrow}2{sup 1}{ital S} and 1{sup 1}{ital S}{r_arrow}2{sup 1}{ital P} transitions of helium have been measured by angle-resolved electron-energy-loss spectroscopy with an incident electron energy of 1500 eV and within the range 2{degree}{endash}11.5{degree} of scattering angles. The corrections for angular factors and density effects have also been made for the experimental results. The differential cross sections and generalized oscillator strength values are absolute and are the first to be measured at such a high impact energy. The experimental results are compared with other measurements and theoretical calculations in the literature. {copyright} {ital 1996 The American Physical Society.}

Authors:
; ; ; ; ;  [1];  [2]
  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230027 (China)
  2. Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T1Z1 (CANADA)
Publication Date:
OSTI Identifier:
283840
Resource Type:
Journal Article
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 53; Journal Issue: 5; Other Information: PBD: May 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HELIUM; OSCILLATOR STRENGTHS; S STATES; P STATES; KEV RANGE 01-10; ENERGY-LOSS SPECTROSCOPY; EXCITED STATES; ANGULAR DISTRIBUTION; BORN APPROXIMATION

Citation Formats

Xu, K Z, Feng, R F, Wu, S L, Ji, Q, Zhang, X J, Zhong, Z P, and Zheng, Y. Absolute generalized oscillator strengths of 2{sup 1}{ital S} and 2{sup 1}{ital P} excitations of helium measured by angle-resolved electron-energy-loss spectroscopy. United States: N. p., 1996. Web. doi:10.1103/PhysRevA.53.3081.
Xu, K Z, Feng, R F, Wu, S L, Ji, Q, Zhang, X J, Zhong, Z P, & Zheng, Y. Absolute generalized oscillator strengths of 2{sup 1}{ital S} and 2{sup 1}{ital P} excitations of helium measured by angle-resolved electron-energy-loss spectroscopy. United States. doi:10.1103/PhysRevA.53.3081.
Xu, K Z, Feng, R F, Wu, S L, Ji, Q, Zhang, X J, Zhong, Z P, and Zheng, Y. Wed . "Absolute generalized oscillator strengths of 2{sup 1}{ital S} and 2{sup 1}{ital P} excitations of helium measured by angle-resolved electron-energy-loss spectroscopy". United States. doi:10.1103/PhysRevA.53.3081.
@article{osti_283840,
title = {Absolute generalized oscillator strengths of 2{sup 1}{ital S} and 2{sup 1}{ital P} excitations of helium measured by angle-resolved electron-energy-loss spectroscopy},
author = {Xu, K Z and Feng, R F and Wu, S L and Ji, Q and Zhang, X J and Zhong, Z P and Zheng, Y},
abstractNote = {The differential scattering cross sections and the generalized oscillator strengths of the 1{sup 1}{ital S}{r_arrow}2{sup 1}{ital S} and 1{sup 1}{ital S}{r_arrow}2{sup 1}{ital P} transitions of helium have been measured by angle-resolved electron-energy-loss spectroscopy with an incident electron energy of 1500 eV and within the range 2{degree}{endash}11.5{degree} of scattering angles. The corrections for angular factors and density effects have also been made for the experimental results. The differential cross sections and generalized oscillator strength values are absolute and are the first to be measured at such a high impact energy. The experimental results are compared with other measurements and theoretical calculations in the literature. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevA.53.3081},
journal = {Physical Review A},
number = 5,
volume = 53,
place = {United States},
year = {1996},
month = {5}
}