Gas-surface interfacial and gas-phase resistances to vaporizing cesium hydroxide and chloride in air. (January 2016)

• Record Type: Journal Article
• Authors: Yang, Hee-Chul; Yang, In-Hwan; Lee, Min-Woo; Chung, Dong-Yong; Choi, Jong-Won
• Is Part Of: Vacuum. Volume 123(2016)
• Page Start: 86
• Page End: 90
• Publication Date: 2016-01
• Subjects: Vaporization -- Interfacial resistance -- Gas-phase resistance -- Cesium species; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2015.10.021
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: The interfacial and the pure gas-phase resistances in air to vaporizing cesium species were evaluated in a comparison of the experimental vaporization flux and the maximum vaporization flux as calculated based on the kinetic theory of gas and the film theory. Gas-phase mass transfer resistances did not show great changes with the temperature, but their values were much greater that those associated with the interfacial resistances. The values of gas-phase resistances were at least a hundred times greater than interfacial resistances for the vaporizing cesium species investigated in this study. Highlights: Theoretical concept of the mass transfer resistance to vaporizing species was established. The resistances in a series that limit the transport of semi-volatile cesium species in air were evaluated. Gas-phase resistances were at least a hundred times greater than interfacial resistances.