Positron annihilation studies on the nature and thermal behaviour of irradiation induced defects in tungsten

被引：52

作者：

Lhuillier, P. E. ^{[1
,2
]}

Barthe, M. F. ^{[1
,2
]}

Desgardin, P. ^{[1
,2
]}

Egger, W. ^{[3
]}

Sperr, P. ^{[3
]}

机构：

[1] CNRS, CEMHTI UPR3079, 1D Ave Rech Sci, F-45071 Orleans 2, France

[2] Univ Orleans, Fac Sci, F-45067 Orleans, France

[3] Univ Bundeswehr Munchen, D-85579 Neubiberg, Germany

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 11 | 2009年 / 6卷 / 11期

关键词：

MUNICH; ITER;

D O I：

10.1002/pssc.200982114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Positron Annihilation Lifetime Spectroscopy has been performed with a pulsed positron beam to investigate the nature and evolution of implantation-induced defects created in the track region (TR) of 800 keV He-3 ions at different fluences. At high fluence - 5x10(16) cm(-2) - lifetime decomposition exhibits a predominant (98%) positron lifetime of 200 ps which is attributed to irradiation induced monovacancy. The increasing average lifetime as a function of the post-implantation annealing temperature has allowed to identify vacancy clustering due to vacancy migration (that occurs from 473 K). (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2329 / +

页数：3

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