Abstract

A vacuum grating monochromator is described, suitable for photoelectric research in the Schumann region. A hydrogen discharge tube serves as a light source, and radiation intensities are measured with a potassium photo-cell and fluorescent filter. Photo-currents are measured with a Compton electrometer, using the steady deflection method. The photoelectric yield of cadmium has been measured from the threshold to 1000A, and curves are given showing a maximum for the surface effect and the onset of the volume effect.

© 1938 Optical Society of America

A Photoelectric Spectrophotometer for the Schumann Region

Elbert P. Little
J. Opt. Soc. Am. 36(3) 168-171 (1946)

Intensity of the Continuous Spectrum of Hydrogen*

Noyes D. Smith
J. Opt. Soc. Am. 28(2) 40-45 (1938)

The Astigmatism of the Concave Grating as a Means of Calibrating Photographic Plates in Intensity Measurements*

Mary Ignace Bresch
J. Opt. Soc. Am. 28(12) 493-499 (1938)

Correlation of Optical Properties and Photoelectric Emission in Thin Films of Alkali Metals

Herbert E. Ives and H. B. Briggs
J. Opt. Soc. Am. 28(9) 330-338 (1938)

Suggestions Concerning Infra-Red Prism Spectroscopy

R. Bowling Barnes
J. Opt. Soc. Am. 28(5) 140-143 (1938)