Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 10, Issue 6
Displaying 1-4 of 4 articles from this issue
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  • Problems of Crystal Growth
    Akiya OOKAWA
    1967 Volume 10 Issue 6 Pages 207-210
    Published: June 20, 1967
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.10.207
    JOURNAL FREE ACCESS
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  • The Crystal Growth and Equipments
    Ryoji HIRABAYASHI
    1967 Volume 10 Issue 6 Pages 210-224
    Published: June 20, 1967
    Released on J-STAGE: January 28, 2010
    DOIhttps://doi.org/10.3131/jvsj.10.210
    JOURNAL FREE ACCESS
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  • An Observation on Molecular Evaporation
    Yutaka HAGIHARA
    1967 Volume 10 Issue 6 Pages 225-227
    Published: June 20, 1967
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.10.225
    JOURNAL FREE ACCESS
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    The author measured the evaporation rate of D. B. S., D. B. P. and D. E. P. in a pot still under high vacuum (8.0 ×10-41.9 × 10-3 torr). The results are shown in Fig. 3. Uyeha has stated that the phenomena of molecular evaporation under high vacuum consist of the molecular-projective-evaporation and the molecular-burst-evaporation. The curves in Fig. 3 supported the Uyeha's statement. In the molecular-burst-evaporation, the ratio (K) of the observed evaporation rate to the theoretical rate vs. temperature is shown in Fig. 4. The value of (K) was close agreement with the value of the ratio of evaporating area to the condenser area. The relation between molecular weight (M) and the threshold evaporation rate of the molecular-burst-evaporation (Ds) was expressed by the equation log Ds=-6.2 × 10-3 M-4.4.
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  • 3He Gas Circulation System for the Ion Source of the RIKEN Cyclotron with the Result of its Test by Gas Analysis
    Tadao TONUMA, Shynji NAKAJIMA, Isao KOONO
    1967 Volume 10 Issue 6 Pages 228-233
    Published: June 20, 1967
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.10.228
    JOURNAL FREE ACCESS
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    The large influx of gas flow is required in an usual ion source for accelerating 3He ion in a cyclotron. For the RIKEN 160 cm variable energy cyclotron, a 3He circulation system has been devised so as to recover and purify the gas continuously. This is accomplished by a 50 l/min rotary pump which has vacuum-tight intake and exhaust. This pump, which is used as a fore pump of cyclotron evacuating system instead of proper one during 3He operation, recovers the gas and forces it to the ion source through a charcoal trap cooled by liquid nitrogen (Fig. 2). The volume of the system between the exhaust of the rotary pump and the ion source is designed as small as possible. The block diagram of the system is shown in Figs. 1 and 10. 4He (300cc. S. T. P.) is used instead of 3He to examine the performance of the system.
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