The use of radioactive isotopes for determination of saturated vapor pressure
| ISSN: |
1573-8205
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Energy, Environment Protection, Nuclear Power Engineering
Physics
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| Notes: |
Abstract A short survey of methods and apparatus arrangements used for measurement of vapor pressure by means of radioactive isotopes is given here. A description is given of vapor pressure determination by the static method, through the direct measurement of radioactivity in the vapor by a counter, or through the determination of activity by radiographic and chemical means. Work on measurement of vapor pressure along the lines of the boiling point method and the jet method, is presented. On the basis of two works, the method of Langmuir in the variant of vaporization of matter from a thin wire and vaporization from a crucible, is discussed. The vapor ressure of liquid metals and of components of liquid alloys is derived from the activity of the condensate. A variation of this method is described, in which the vapor pressure is determined from the activity of part of the condensate. Integral (with collection of all vapor), and differential (with collection of only part of the vapor phase) variations of Knudsen's method are presented, as well as the results of measurement of vapor pressure of elements and components of alloys by means of radiometric analysis of ccndensate. In the last section a description is given of measurements of vapor pressure by the method of isotope exchange. A table is given of relative sensitivity of vapor pressure measurement by the various methods.
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| Type of Medium: |
Electronic Resource
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| URL: |