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Calculation of back-reflected intensities of a Na-atom beam by standing evanescent E-M field

Technical Report:

Abstract

A method is described for the computation of the back-scattered intensities of atomic beams, diffracted from the evanescent field generated outside an optical plate by internal counter-propagating laser beams. The method derives from a procedure developed for the similar but importantly differing problem of Low Energy Electron Diffraction, (Lynch and Smith, 1983). Modifications to that theory required for the present problem bring the equations closer to the RHEED solution proposed by Ichimiya (1983). Results from multi-slicing from the same narrow field depth (2 Aangstroems) in this strong field case show the success and also limitations of the program in its present form. Computation to greater depth in the strong field leads to numerical instabilities due to the incorporation of very large tunnelling terms. This requires the application of boundary conditions at each slice rather than the end of the multi-slice calculation. 7 refs., 3 figs.
Authors:
Murphy, J; Goodman, P; [1]  Smith, A [2] 
  1. Melbourne Univ., Parkville, VIC (Australia). School of Physics
  2. Monash Univ., Clayton, VIC (Australia). Dept. of Physics
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
UM-P-92/106
Reference Number:
SCA: 665300; PA: AIX-25:004894; EDB-94:016395; ERA-19:005851; NTS-94:014807; SN: 93001121435
Resource Relation:
Other Information: PBD: 1992
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BACKSCATTERING; BOUNDARY CONDITIONS; SODIUM; ATOMIC BEAMS; ANALYTICAL SOLUTION; COMPUTER CALCULATIONS; ELECTROMAGNETIC FIELDS; ELECTRON DIFFRACTION; INTEGRAL EQUATIONS; LASER RADIATION; MATRICES; SCHROEDINGER EQUATION; THEORETICAL DATA; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
OSTI ID:
10109993
Research Organizations:
Melbourne Univ., Parkville, VIC (Australia). School of Physics
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE94609996; TRN: AU9313480004894
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
10 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Murphy, J, Goodman, P, and Smith, A. Calculation of back-reflected intensities of a Na-atom beam by standing evanescent E-M field. Australia: N. p., 1992. Web.
Murphy, J, Goodman, P, & Smith, A. Calculation of back-reflected intensities of a Na-atom beam by standing evanescent E-M field. Australia.
Murphy, J, Goodman, P, and Smith, A. 1992. "Calculation of back-reflected intensities of a Na-atom beam by standing evanescent E-M field." Australia.
@misc{etde_10109993,
title = {Calculation of back-reflected intensities of a Na-atom beam by standing evanescent E-M field}
author = {Murphy, J, Goodman, P, and Smith, A}
abstractNote = {A method is described for the computation of the back-scattered intensities of atomic beams, diffracted from the evanescent field generated outside an optical plate by internal counter-propagating laser beams. The method derives from a procedure developed for the similar but importantly differing problem of Low Energy Electron Diffraction, (Lynch and Smith, 1983). Modifications to that theory required for the present problem bring the equations closer to the RHEED solution proposed by Ichimiya (1983). Results from multi-slicing from the same narrow field depth (2 Aangstroems) in this strong field case show the success and also limitations of the program in its present form. Computation to greater depth in the strong field leads to numerical instabilities due to the incorporation of very large tunnelling terms. This requires the application of boundary conditions at each slice rather than the end of the multi-slice calculation. 7 refs., 3 figs.}
place = {Australia}
year = {1992}
month = {Dec}
}