Direct Recording of Spectra in the Region 12μ to 3μ Using the Lead Sulfide Photo-Conductive Cell*
- 1 January 1949
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 39 (1) , 68-69
- https://doi.org/10.1364/josa.39.000068
Abstract
The problems arising in the use of the lead sulfide cell for direct recording of spectra have been investigated using a spectrograph designed especially for this work. The inhomogeneity of the surface of these cells, as compared with photo-multipliers, makes for important differences in their use. Using a sharply tuned amplifier, the sensitivity of the cells at room temperature is adequate to permit a resolving power of the order of 40,000 at 1.4µ. Wave-lengths may be determined to about 0.1A, using overlapping orders.Keywords
This publication has 1 reference indexed in Scilit:
- An Infrared Stellar Spectrometer.The Astrophysical Journal, 1947