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The photoelectric and thermionic work functions of outgassed platinum

DuBridge, Lee A. (1928) The photoelectric and thermionic work functions of outgassed platinum. Physical Review, 31 (2). pp. 236-243. ISSN 0031-899X. https://resolver.caltech.edu/CaltechAUTHORS:DUBpr28a

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Abstract

In extending results previously reported the photoelectric and thermionic work functions for platinum were studied while the specimen was put through an extended outgassing process. With monochromatic light the final value of the photoelectric threshold was found to be 1962A (6.30 v.) The thermionic work function increases during outgassing, reaching a final value of 6.35 volts, within 1 percent. The two work functions are thus in agreement within the limits of error. The thermionic constant A of the Richardson T^2 law also increases as the work function increases, reaching a final value which is 200 times or more greater than Dushman's theoretical value of 60.2 amp/cm^2 deg^2.


Item Type:Article
Additional Information:©1928 The American Physical Society. Received 26 October 1927. The author is greatly indebted to Professor Millikan and the staff of the Norman Bridge Laboratory for the facilities placed at his disposal.
Issue or Number:2
Record Number:CaltechAUTHORS:DUBpr28a
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:DUBpr28a
Alternative URL:http://dx.doi.org/10.1103/PhysRev.31.236
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3661
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Jun 2006
Last Modified:02 Oct 2019 23:05

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