Review of dynamic recovery effects on ion irradiation damage in ionic-covalent materials

被引：38

作者：

Weber, William J. ^{[1
,2
]}

Zhang, Yanwen ^{[1
,2
]}

Wang, Lumin ^{[3
]}

机构：

[1] Univ Tennessee, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[3] Univ Michigan, Ann Arbor, MI 48109 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2012年 / 277卷

关键词：

Irradiation damage; Amorphization; Ionization; Silicate apatite; Silicon carbide; BEAM-INDUCED AMORPHIZATION; LEVEL NUCLEAR-WASTE; INDUCED CRYSTALLIZATION; IMPLANTED SILICON; RADIATION-DAMAGE; TEMPERATURE; IMMOBILIZATION; MODEL; DEPENDENCE; APATITE;

D O I：

10.1016/j.nimb.2011.12.043

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Single crystalline samples of highly ionic Ca2La8(SiO4)(6)O-2 and covalent 6H-SiC have been irradiated with different ions/energies to study the effects of dose, temperature, damage-energy density, and in-cascade ionization rate on the dynamics of irradiation-induced amorphization. Above temperatures of 100-150 K, the dose for complete amorphization, D, increases with temperature in a single stage and exhibits a strong dependence on the ratio of in-cascade recovery to displacement cross sections, sigma(r)/sigma(d). A fit of a dynamic model for amorphization to these data indicates that irradiation-induced dynamic recovery occurs with an activation energy of 0.15 +/- 0.02 and 0.12 +/- 0.01 eV for Ca2La8(SiO4)(6)O-2 and 6H-SiC, respectively. Analysis of these data reveals that ionization processes are the dominant contributor to in-cascade recovery in Ca2La8(SiO4)(6)O-2; while in 6H-SiC, ionization processes are less dominant. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1 / 5

页数：5

共 71 条

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