In situ NRA study of hydrogen isotope exchange in self-ion damaged tungsten exposed to neutral atoms

被引：41

作者：

Markelj, S. ^{[1
]}

Zaloznik, A. ^{[1
]}

Schwarz-Selinger, T. ^{[2
]}

Ogorodnikova, O. V. ^{[2
,3
]}

Vavpetic, P. ^{[1
]}

Pelicon, P. ^{[1
]}

Cadez, I. ^{[1
]}

机构：

[1] Jozef Stefan Inst, Jamova Cesta 39, Ljubljana 1000, Slovenia

[2] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany

[3] Natl Res Nucl Univ MEPhI, Kashirskoe Sh 31, Moscow, Russia

来源：

JOURNAL OF NUCLEAR MATERIALS | 2016年 / 469卷

关键词：

Tungsten; Isotope exchange; Neutral atoms; Damaged material; NRA; RADIATION-INDUCED DAMAGE; ELEY-RIDEAL; HOT-ATOM; DEUTERIUM RETENTION; IRRADIATION; DIFFUSION;

D O I：

10.1016/j.jnucmat.2015.11.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Isotope exchange was studied in-situ by Nuclear Reaction Analysis in the bulk of self-ion damaged tungsten at 600 K. Both variations of isotope exchange of H by D and of D by H were measured. The deuterium isothermal desorption was also studied and evaluated in order to be able to resolve the self desorption from the isotope exchange at 600 K. The isotope exchange was also studied on the surface by Elastic Recoil Detection Analysis at 480 K and 380 K. The exchange mechanism was effective both on the surface and in the bulk of damaged tungsten. A simple model was introduced to describe the exchange efficiency on the surface and in the bulk obtaining the exchange cross sections on the surface and in bulk. In both cases an isotope effect was observed, where the exchange of H atoms by D atoms was more efficient than for the reverse sequence. (C) 2015 EURATOM. Published by Elsevier B.V. All rights reserved.

引用

页码：133 / 144

页数：12

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