Heavy-ion induced damage in fluorite nanopowder

被引：26

作者：

Boccanfuso, M

Benyagoub, A

Toulemonde, M

Trautmann, C

Schwartz, K

Dufour, C

机构：

[1] Ctr Interdisciplinaire Rech Ions Lasers, CIRIL, F-14070 Caen 5, France

[2] GSI Darmstadt, Gesellsch Schweronenforsch, D-64291 Darmstadt, Germany

[3] Inst Sci Mat & Rayonnement, LERMAT, F-14050 Caen 4, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2001年 / 175卷

关键词：

ionic crystal; calcium fluoride; swift heavy ions; X-ray diffraction; radiation damage;

D O I：

10.1016/S0168-583X(00)00599-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Compressed pellets of 40 nm sized CaF2 powder were exposed to Pb ions of about 4 MeV/u. The structural change of the irradiated crystals was monitored by in situ X-ray diffraction experiments, The evolution of the diffraction spectra as a function of the ion fluence gives evidence for two different phenomena: (1) the area of the diffraction peaks slowly decreases due to the loss of the crystalline phase of CaF2, and (2) the width of the peaks broadens at a much faster rate. We assume that this latter observation can be ascribed to a grain breaking process. (C) 2001 Elsevier Science B.V. All rights reserved.

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收藏

页码：590 / 593

页数：4

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