锂晶体中 14N 和 16O 离子迅速产生的辐射损伤的热退火处理

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Express Pub Date : 2024-07-14 DOI:10.1088/2053-1591/ad5a68

M V Sorokin, Zh B Malikova, A K Dauletbekova, G Baubekova, G M Aralbayeva and A T Akilbekov

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引用次数: 0

摘要

研究了氟化锂晶体在 23-MeV 氮离子和 28-MeV 氧离子照射下的色心退火。根据光学吸收光谱和反应速率模型，对 500 K 以下实际重要温度下的退火动力学提出了新的解释。所提出的模型解释了由于 F 中心的迁移和更大聚集体的形成，F 峰和 F2/F3+ 峰同时降低的现象，并且不包括对杂质和阳离子空位的额外假设。它将基态中 F 中心的迁移能定为约 1.3 eV，这与之前的研究结果一致。

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Thermal annealing of radiation damages produced by swift 14N and 16O ions in LiF crystals

Annealing of color centers was studied in lithium fluoride crystals, irradiated with 23-MeV nitrogen and 28-MeV oxygen ions. Basing on the optical absorption spectroscopy and reaction-rate modelling, a new interpretation of the annealing kinetics at the practically important temperatures below 500 K is suggested. Proposed model explains simultaneous decrease of the F and F2/F3+ peaks as a result of migration of the F centers and formation of larger aggregates, and does not include additional assumptions about impurities and cation vacancies. It specifies the migration energy of the F centers in the ground state to be about 1.3 eV, that corresponds to earlier studies.

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来源期刊

Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

4.30%

发文量

640

审稿时长

12 weeks

期刊介绍： A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.