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Recent advances in electron momentum spectroscopy

Technical Report:

Abstract

The flexibility of the (e,2 e) technique or electron momentum spectroscopy in obtaining information on the electronic structure of atoms, molecules, and solids is demonstrated. High resolution electron momentum spectroscopy measurements for argon including the first measurements of momentum profiles belonging to the {sup 2} p{sup 0} and {sup 2}D{sup e} manifolds are used to demonstrate the technique for atomic targets. The d-wave transitions in argon are entirely due to initial state correlations. The first (e,2 e) measurements on an excited target and also on an oriented target are also discussed. Sodium atoms are pumped to the m{sub l} = +1 state of the excited 3 p state by {sigma}{sup +} light from a laser. The (e,2 e) measurements on this excited state are in excellent agreement with the momentum density given by the 3 p (m{sub l} - 1) Hartree-Fock wavefunction. The recent measurements of the valence electron momentum distributions for ethane as well as some earlier results for water are used as an example of the application of EMS to the study of molecules. The application of the EMS technique to measure spectral momentum densities in condensed matter targets is demonstrated by some recent results on amorphous carbon.  More>>
Authors:
Publication Date:
Mar 01, 1992
Product Type:
Technical Report
Report Number:
ESM-39
Reference Number:
SCA: 664200; PA: AIX-24:003977; SN: 93000914015
Resource Relation:
Other Information: PBD: Mar 1992
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ELECTRON SPECTROSCOPY; ORBITAL ANGULAR MOMENTUM; ARGON; BINDING ENERGY; ELECTRON-ELECTRON COLLISIONS; EXCITED STATES; EXPERIMENTAL DATA; GRAPHITE; HYDROGEN; WAVE FUNCTIONS; 664200; SPECTRA OF ATOMS AND MOLECULES AND THEIR INTERACTIONS WITH PHOTONS
Sponsoring Organizations:
Australian Research Council, Canberra, ACT (Australia)
OSTI ID:
10109236
Research Organizations:
Flinders Univ. of South Australia, Adelaide, SA (Australia). Electronic Structure of Materials Centre
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE93610149; TRN: AU9212896003977
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[36] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Weigold, E. Recent advances in electron momentum spectroscopy. Australia: N. p., 1992. Web.
Weigold, E. Recent advances in electron momentum spectroscopy. Australia.
Weigold, E. 1992. "Recent advances in electron momentum spectroscopy." Australia.
@misc{etde_10109236,
title = {Recent advances in electron momentum spectroscopy}
author = {Weigold, E}
abstractNote = {The flexibility of the (e,2 e) technique or electron momentum spectroscopy in obtaining information on the electronic structure of atoms, molecules, and solids is demonstrated. High resolution electron momentum spectroscopy measurements for argon including the first measurements of momentum profiles belonging to the {sup 2} p{sup 0} and {sup 2}D{sup e} manifolds are used to demonstrate the technique for atomic targets. The d-wave transitions in argon are entirely due to initial state correlations. The first (e,2 e) measurements on an excited target and also on an oriented target are also discussed. Sodium atoms are pumped to the m{sub l} = +1 state of the excited 3 p state by {sigma}{sup +} light from a laser. The (e,2 e) measurements on this excited state are in excellent agreement with the momentum density given by the 3 p (m{sub l} - 1) Hartree-Fock wavefunction. The recent measurements of the valence electron momentum distributions for ethane as well as some earlier results for water are used as an example of the application of EMS to the study of molecules. The application of the EMS technique to measure spectral momentum densities in condensed matter targets is demonstrated by some recent results on amorphous carbon. 19 figs., 1 tab., 38 refs.}
place = {Australia}
year = {1992}
month = {Mar}
}