MASS SPECTROMETRIC STUDY OF HEATS OF SUBLIMATION OF DYSPROSIUM, SAMARIUM, THULIUM, AND YTTERBIUM
Journal Article
·
· Journal of Chemical Physics (U.S.)
The flax of atoms from a Knudsen-type effusion cell has been studied by means of a mass spectrometer. The heat of sublimation was obtained from the dependence of the ion current upon the cell temperature by means of the Clausius- Clapeyron equation. The method was used to obtain heat of sublimation values for dysprosium, samarium, thulium, and ytterbium. The results were: Dy, 69.3 plus or minus 0.6 kcal/mole for vaporization at 1215 deg K; Sm, 48.7 plus or minus 0.4 kcal/mole for vaporization at 811 deg K; Tm, 56.2 plus or minus 0.4 kcal/ mole for vaporization at 937 deg K; and Yb, 39.5 plus or minus 0.5 kcal/mole for vaporization at 667 deg K. (auth)
- Research Organization:
- Iowa State Coll., Ames
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-009153
- OSTI ID:
- 4291289
- Journal Information:
- Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 30; ISSN JCPSA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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