MONOCRYSTALS OF ZnS AND THE SPECTRUM OF THEIR ABSORPTION REGION AT LOW TEMPERATURES
A study was made of the absorption spectra of thin single crystals at 4.2, 77, and 293 deg K. In preparing ZnS crystals, the method of heating the powdered ZnS in a neutral gas atmosphere was used. The form and dimensions of the crystals obtained depend largely on such conditions as the vaporization temperature of the powder, the position of the quantz baffles, the velocity of the gas flow. and the temperature gradient near the baffles. Crystals grown for this study were thin colorless plates wnvith maximum dimensions of 25 x 5 mm. The thickness varied from 0.1 mm to tenths of a micron. The crystals of varying thicknesses made possible a thorough study of the long wave natural absorption spectra of 3300 to 3160 A. Heating the crystals from 4.2 to 77 deg K and then to 20 deg C displaces the lines in the direction of longer wave lengths and causes them to become diffuse. The position for the absorption lines for the ZnS crystals are tabulated for the various temperatures. (B.O.G.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-001998
- OSTI ID:
- 4155900
- Journal Information:
- Optics and Spectroscopy (U.S.S.R.) (English Translation), Journal Name: Optics and Spectroscopy (U.S.S.R.) (English Translation) Vol. Vol: , No. 1
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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