| Autor: |
V.A. Skuratov, Yu. S. Kovalev, N.S. Kirilkin, K. Havanscak, T.S. Strukova |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 286:61-66 |
| ISSN: |
0168-583X |
| Popis: |
Microluminescence and laser confocal scanning microscopy techniques have been used to study spatial distribution of F-type color centers in LiF and mechanical stress profiles in Al 2 O 3 :Cr single crystals irradiated with 1.2 MeV/amu Ar, Kr, Xe and 3 MeV/amu Kr and Bi ions. It was found that F 2 and F 3 + -center profiles at low ion fluences correlate with ionizing energy loss profiles. With increasing ion fluence, after ion track halo overlapping, the luminescence yield is defined by radiation defects formed in elastic collisions in the end-of-range area. Stress profiles and stress tensor components in ruby crystals across swift heavy ion irradiated layers have been deduced from depth-resolved photo-stimulated spectra using piezospectroscopic effect. Experimental data show that that stresses are compressive in basal plane and tensile in perpendicular direction in all samples irradiated with high energy ions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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