Formation of dislocations and hardening of LiF under high-dose irradiation with 5-21 MeV 12C ions

被引:4
|
作者
Zabels, R. [1 ]
Manika, I. [1 ]
Schwartz, K. [2 ]
Maniks, J. [1 ]
Dauletbekova, A. [3 ]
Grants, R. [1 ]
Baizhumanov, M. [3 ]
Zdorovets, M. [4 ]
机构
[1] Univ Latvia, Inst Solid State Phys, 8 Kengaraga Str, LV-1063 Riga, Latvia
[2] GSI Helmholtzzentrum Schwerionenforsch, 1 Planckstr, D-64291 Darmstadt, Germany
[3] LN Gumilyov Eurasian Natl Univ, 5 Munaitpassov Str, Astana 010008, Kazakhstan
[4] Inst Nucl Phys, 1 Ibragimov Str, Alma Ata 050032, Kazakhstan
来源
关键词
SWIFT HEAVY-IONS; COLOR-CENTERS; LITHIUM FLUORIDE; CENTER CREATION; CRYSTALS; CLUSTERS; MOBILITY; HARDNESS; DAMAGE; KR-84;
D O I
10.1007/s00339-017-0934-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The emergence of dislocations and hardening of LiF crystals irradiated to high doses with C-12 ions have been investigated using chemical etching, AFM, nanoindentation, and thermal annealing. At fluences ensuring the overlapping of tracks (Phi >= 6 x 10(11) ions/cm(2)), the formation of dislocation- rich structure and ion-induced hardening is observed. High-fluence (10(15) ions/cm(2)) irradiation with C-12 ions causes accumulation of extended defects and induces hardening comparable to that reached by heavy ions despite of large differences in ion mass, energy, energy loss, and track morphology. The depth profiles of hardness indicate on a notable contribution of elastic collision mechanism (nuclear loss) in the damage production and hardening. The effect manifests at the end part of the ion range and becomes significant at high fluences (>= 10(14) ions/cm(2)).
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页数:8
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