6533b852fe1ef96bd12aaa69

RESEARCH PRODUCT

<title>Hardening and long-range stress effects in LiF caused by high-fluence irradiation with fast Bi, Ni, Kr, and S ions</title>

subject

description

The limits of the hardening, and the effects of ion-induced internal and long-range stresses in LiF crystals irradiated with Bi, Ni, Kr, and S ions, having a specific energy of the order of 10 MeV/u and the fluence up to 1013cm-2, are studied. A considerable hardness increase, bending of the crystals, formation of dislocations in distant nonirradiated parts of the crystals, and initiation of fracturing under the high-fluence irradiation are observed. It is shown that the irradiation with heavy ions (Bi) gives rise to dislocations and work hardening mainly in the region adjacent to the irradiated one. In the case of lighter ions (Ni and S), the work hardening takes place also inside the irradiated zone. The heavy ions that cause a severe track core damage generally induce a higher stress.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.