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SPECIFIC HEATS OF MANGANESE AND BISMUTH AT LIQUID HYDROGEN TEMPERATURES |
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Canadian Journal of Research,
Volume 27a,
Issue 2,
1949,
Page 9-16
L. D. Armstrong,
H. Grayson-Smith,
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摘要:
New measurements of the specific heats of manganese and bismuth in the temperature range 14° to 22° K. are reported. The specific heats of these metals are compared with theory. In both cases the approximate theoretical formulawhereCD(x) is the Debye function, is accurately obeyed over the limited temperature region concerned. However, comparison with measurements at other temperatures shows that this may lead to erroneous conclusions. For manganese a precise conclusion is not possible, and it is estimated that the electronic specific heat coefficientAlies between 0.0035 and 0.0040, while θ varies with temperature from 365 to 390 degrees. For bismuth it is concluded that the electronic specific heat is negligible. This permits an accurate determination of θ, and it is found that the variation of θ with temperature is remarkably similar to that predicted by Blackman for a simple cubic lattice.
ISSN:1923-4287
DOI:10.1139/cjr49a-002
出版商:NRC Research Press
年代:1949
数据来源: NRC
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2. |
ON THE NUMERICAL CALCULATION OF THE INTERNAL CONVERSION IN THEK-SHELL—THE ELECTRIC DIPOLE CASE |
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Canadian Journal of Research,
Volume 27a,
Issue 2,
1949,
Page 17-25
J. P. Stanley,
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PDF (351KB)
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摘要:
Hulme's formula for the internal conversion of γ-radiation is simplified and used to calculate the internal conversion coefficient in the electric dipole case for electrons in theK-shell. For each of the elementsZ = 69, 74, 79, 84, 89,IKis calculated for 10 values of the variableand a table obtained by interpolation is given for θ = 0.05 to θ = 1.70.
ISSN:1923-4287
DOI:10.1139/cjr49a-003
出版商:NRC Research Press
年代:1949
数据来源: NRC
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