Injection of Intense, Large-Diameter Ion Beams into Low-Density Gases

Experimental tests of a method for injection of large-diameter, intense positive ion beams into low-density gases are described. 20-keV, 15-mA beams are projected through a supersonic annular gas nozzle which furnished a large aperture (3.18 cm diam), while providing differential pumping to allow up...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 1966-01, Vol.37 (12), p.4317-4319
Main Authors: Martin, D. H., Hutchins, C. L., McClenny, W. A., Stallings, C. H., Wakefield, R. H.
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Experimental tests of a method for injection of large-diameter, intense positive ion beams into low-density gases are described. 20-keV, 15-mA beams are projected through a supersonic annular gas nozzle which furnished a large aperture (3.18 cm diam), while providing differential pumping to allow up to 30 mTorr pressure in the collision chamber. Calorimetrically measured attenuations of large argon and helium ion beams in several gases are given and compared with similar data for small-aperture beams. Possible extensions of the method are discussed.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1708035