VACANCY ANNEALING IN HE AND H2 IRRADIATED MO OBSERVED BY THERMAL HELIUM DESORPTION SPECTROMETRY

被引：5

作者：

ARMSTRONG, TR ^{[1
]}

FILIUS, HA ^{[1
]}

VANVEEN, A ^{[1
]}

HERINGA, JR ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL, INST INTERFAC REACTOR, 2629 JB DELFT, NETHERLANDS

来源：

JOURNAL OF NUCLEAR MATERIALS | 1993年 / 203卷 / 03期

关键词：

D O I：

10.1016/0022-3115(93)90375-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal helium desorption spectrometry (THDS) provides a sensitive technique for measuring the concentration of vacancy type defects at low defect concentrations. This technique has been utilized to measure vacancy annealing curves for single crystalline Mo(110) irradiated with 3 keV He, 1 keV He and 3 keV H-2 ions. In order to extract the vacancy migration energy E(V)M from the measured data, the annealing curves have been analysed by using a simple diffusion model. The value of E(V)M obtained is 1.23+/-0.05 eV. In addition. an attempt has been made to examine the influence of hydrogen on the annealing behaviour of vacancies in Mo. It appears that hydrogen does not have any measurable influence on the vacancy annealing curves. The dissociation energy of hydrogen bound to vacancies in Mo is found to be less than 1.4 eV.

引用

页码：189 / 195

页数：7

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