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The direction of ejection of photo-electrons produced by x-rays

Loughridge, D. H. (1925) The direction of ejection of photo-electrons produced by x-rays. Physical Review, 26 (6). pp. 697-700. ISSN 0031-899X. http://resolver.caltech.edu/CaltechAUTHORS:LOUpr25

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Abstract

Stereoscopic photographs of photo-electrons produced by 40 kv Mo Kα x-rays, were examined by a stereoscopic comparator which gave a quantitative measure of the initial direction of ejection in space. The measurement of twenty-four distinct tracks in a series of twenty-nine pairs of photographs showed that the most probable angle of ejection was about 70° with the primary beam. This supports the view that the electric vector of the radiation plays a very important part in the production of photo-electrons. The small forward or backward component, noticed in many tracks, must come from the random momentum of the electron in its orbit before ejection.


Item Type:Article
Additional Information:©1925 The American Physical Society. Received 18 September 1925. I am grateful to Professor R. A. Millikan for his advice and inspiration during the progress of this work.
Record Number:CaltechAUTHORS:LOUpr25
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LOUpr25
Alternative URL:http://dx.doi.org/10.1103/PhysRev.26.697
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4267
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Aug 2006
Last Modified:26 Dec 2012 08:58

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