Vaporization of Strontium Atom and Ion from Strontium Oxide Applied on Tungsten and Rhenium

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概要

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• A Langmuir method has been used to determine the vapor pressure and the heats of vaporization of strontium atoms from strontium oxide applied on tungsten and rhenium surfaces. The data obtained are log P<SUB>atm</SUB>=5.064-2.071×10<SUP>4</SUP>/T and l<SUP>To</SUP>=4.11±0.14eV for tungsten, and log P<SUB>atm</SUB>=6.095-2.496×10<SUP>4</SUP>/T and l<SUP>To</SUP>=4.95±0.14eV for rhenium, respectively. By measuring the ion current of <SUP>88</SUP>Sr<SUP>+</SUP> with a mass spectrometer the values of the heats of vaporization of strontium ions have also been obtained as l<SUP>T+</SUP>=7.07±0.08eV and l<SUP>T+</SUP>=6.73±0.07eV for tungsten and rhenium, respectively, under the assumption that the ion vaporization processes may be described by the, Saha-Langmuir equation. The work functions of the surfaces applied with strontium oxide have been discussed.

• 日本質量分析学会の論文

著者

• KUBO KENJI

  Engineering Research Institute, Kyoto University

• ASANO MITSURU

  Engineering Research Institute, Kyoto University

• MAGARI SABURO

  Engineering Research Institute, Kyoto University

関連論文

• Mass Spectrometric Studies of the Work Function and the Heats of Sublimation of Atom and Positive Ion
• Surface Ionization and Thermoelectronic Property of Uranium Dioxide
• Vaporization of Strontium Atom and Ion from Strontium Oxide Applied on Tungsten and Rhenium
• Heats of Vaporization of UO2 and UO from UO2

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