Accession Number:

AD0258133

Title:

X-RAY INVESTIGATION OF THE CHARACTERISTIC TEMPERATURE OF TUNGSTEN

Descriptive Note:

Corporate Author:

OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s):

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

The ratio of the intensity of the powder diffraction line 116-235 to that of the line 011 for a W wire has been determined for Mo K alpha radiation 0.71A for temperatures 1.4, 17, 44, 145, and 294 K. X-ray intensities were measured with a proportional counter. Previous specific heat measurements by Horowitz and Daunt Phys. Rev. 911099, 1953 gave a peak at 17 K in the curve of the Debye characteristic temperature as absolute temperature T, whereas more recent measurements show no such maximum. The results of Horowitz and Daunt indicated an expected increase in the x-ray scattering ratio of some 4 between 1.4 and 17 K. Accuracy of measurement of the scattered x-ray intensities was adequate for purposes of comparison, and the x-ray results lend support to the specific heat measurements of Horowitz and Daunt. The remainder of the characteristic temperature curve to 294 K is discussed. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE