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Direction of photo-electron emission

Loughridge, Donald H. (1927) Direction of photo-electron emission. Physical Review, 30 (4). pp. 488-493. ISSN 0031-899X. doi:10.1103/PhysRev.30.488.

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Direction of emission of photoelectrons from hydrogen, air and argon irradiated by Mo Kα x-rays. — Photographs of the photo-electron tracks in a Wilson expansion chamber through which a narrow beam of monochromatic Mo Kα x-rays were passed were taken with a stereoscopic camera. The direction of the paths with respect to the x-ray beam was determined from measurements made with a specially designed stereoscopic comparator. 445 tracks were studied of which 231 were in argon, 123 in air and 91 in hydrogen. Curves showing the frequency of occurrence of different angles of ejection have a fairly sharp maximum for angles of about 70° with the forward direction of the x-ray beam. The curves are similar for the three gases studied except that the maximum in the case of hydrogen is somewhat sharper than for the other two gases.

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Additional Information:©1927 The American Physical Society. Received 1 July 1927. In conclusion I desire to express my warm appreciation for the inspiration and guidance given me during the progress of this work by Professor R. A. Millikan, and Dr. A. W. Simon for the help he has given in the design of the expansion chamber.
Issue or Number:4
Record Number:CaltechAUTHORS:LOUpr27a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4365
Deposited By: Tony Diaz
Deposited On:19 Aug 2006
Last Modified:08 Nov 2021 20:16

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