The Photoelectric and Thermionic Properties of Molybdenum
- 1 June 1929
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 33 (6) , 991-997
- https://doi.org/10.1103/physrev.33.991
Abstract
The variation of the photoelectric sensitivity of a molybdenum surface during prolonged heat treatment has been studied over a period of 300 hours of intense heating. Thin ribbons of molybdenum were heated to a temperature of 1325°C in a high vacuum and the photocurrents produced by the light from a quartz mercury arc were measured with a quadrant electrometer. The photoelectric sensitivity was found to increase as the heating progressed, finally reaching a limiting value. The increase in sensitivity was accompanied by a shift in the wave-length limit from approximately 2600 A. U. to approximately 3800 A. U.Keywords
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