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RESEARCH PRODUCT

Hardening in LiF induced by fast Ni ions and recovery of properties under annealing

P. KulisI. ManikaJanis ManiksLasma Gailite

subject

CrystallographyOptical absorbanceAbsorption spectroscopyAnnealing (metallurgy)ChemistryAnalytical chemistryHardening (metallurgy)Nickel ionsActivation energyIrradiationIon

description

The recovery of hardness and optical absorbance of LiF crystals irradiated with 640 MeV nickel ions under annealing at 450–810 K is investigated. Recovery of the hardness of irradiated crystals is initiated at temperatures above 530 K, at which a transition from a complex absorption spectrum to a spectrum with only one broad peak at 275 nm is observed. Activation energy of 0.13 eV ± 0.02 eV, which is close to that necessary for migration of H centers, is obtained from the annealing data. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

https://doi.org/10.1002/pssc.200460200