LASER DESORPTION STUDY OF BERYLLIUMS HYDROGEN RECYCLING PROPERTIES AT HIGH-TEMPERATURE

被引：11

作者：

BOIVIN, R

TERREAULT, B

机构：

[1] Institut National de la Recherche Scientifique, Varennes, Que. J3X 1S2

来源：

JOURNAL OF NUCLEAR MATERIALS | 1992年 / 187卷 / 02期

关键词：

D O I：

10.1016/0022-3115(92)90542-S

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the reemission at > 1000 K of 1.5 keV H ions implanted in beryllium, using a novel method of laser flash desorption. Numerical modelling of the hydrogen evolution as a function of the laser energy indicates that the process is, unexpectedly, detrapping-limited rather than diffusion-limited, with a trap energy of 1.6 +/- 0.15 eV and an apparent diffusivity greater-than-or-equal-to 10(-3) cm2/s at 1200 K. It could imply faster than anticipated H isotope recycling at high temperature. A comparison with other data is made.

引用

页码：117 / 121

页数：5

共 21 条

[1] DEUTERIUM PERMEATION AND DIFFUSION IN HIGH-PURITY BERYLLIUM [J].