By Topic

Determination of spatial energy deposition in e‐beam‐pumped laser cells by pressure measurements

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Eckstrom, D.J. ; Molecular Physics Laboratory, SRI International, Menlo Park, California 94025 ; Walker, H.C.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.328018 

A significant fraction of the energy deposited by electron beams in gases results in heating of the gas, which causes a transient pressure rise in the cell. When the pressure rise is uniform across the height and length of the cell, but varies across the depth, one‐dimensional unsteady flow theory applies. Then a fast‐response pressure measurement at the back wall of the cell can be interpreted to give the initial spatial pressure distribution. We describe the relationship between time and space coordinates for both low and medium levels of excitation in the cell. Experiments are discussed which illustrate the application of this technique. Analytical predictions using the SANDYL 3‐D electron scattering code show basic agreement with the experimental results, but indicate some areas for improvements in the calculations. Intermediate‐response pressure measurements are shown to be inadequate to determine the local deposition when the deposition varies markedly across the cell.

Published in:

Journal of Applied Physics  (Volume:51 ,  Issue: 5 )