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The Effect of Total Pressure on Vaporization of Alkalis from Partially Molten Chondritic Material

Published online by Cambridge University Press:  12 April 2016

Taro Shimaoka  and
Noboru Nakamura
Taro Shimaoka
Affiliation:
Department of Science of Material Differentiation, Graduate School of Science and Technology, Kobe University
Noboru Nakamura
Affiliation:
Department of Science of Material Differentiation, Graduate School of Science and Technology, Kobe University Department of Earth Sciences, Faculty of Science, Kobe University, Nada, Kobe 657, Japan

Abstract

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In order to examine the effect of total pressure on vaporization of alkalis (Na, K, Rb) from a partially molten chondritic material, heating experiments were carried out under various He gas pressures (~10−5-~10−1torr) at 1300°C. The rate of vaporization decreased in the order of Na > K > Rb with the increasing of the pressure, and reached a minimum at ~10−1torr.

Type
Interplanetary Dust: Physical and Chemical Analysis
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 79 - 82
Copyright
Copyright © Kluwer 1991

References

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