Radiation hardening of a surface under ion bombardment

Flerov, V.I.; Flerov, A. V.

doi:10.1016/s0257-8972(98)00412-5

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…In Ref. 8 the change of microhardness in LiF irradiated with 210 MeV Kr ions was compared with that by irradiation with 5 MeV electrons. The authors found that heavy ion induced microhardness change in LiF crystals is stronger than that by electron irradiation at a comparable absorbed dose.…”

Section: Introductionmentioning

confidence: 99%

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Electron color center creation in LiF irradiated with Kr ions

Dauletbekova

Аkilbekov

Zdorovets

2010

Physica Status Solidi (b)

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First irradiation experiments on the cyclotron ion accelerator DC-60 are presented. LiF crystals were irradiated with 147 MeV Kr þ14 ions in the fluence (F) range 8 Â 10 10 -3 Â 10 12 ions/cm 2 at a beam current 20 nA/cm 2 (corresponding to a flux f % 9 Â 10 9 ions/cm 2 s). The main electron microdefects (F-type color centers) were studied by absorption spectroscopy in the spectral range 200-650 nm. After a linear increase with the fluence, single F centers saturate at F % 10 12 ions/cm 2 and at higher fluences decrease, whereas the concentration of complex centers have a strong increase. The efficiency of F center creation at higher fluences decreases due to the strong recombination losses of primary Frenkel pairs.

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Section: Introductionmentioning

confidence: 99%

“…Taking into account the former results of color center creation under heavy ion irradiation in LiF crystals 5–10, the main goal of our study is to investigate the creation of single and complex F centers under irradiation with 147 MeV 84 Kr ions at high fluences.…”

Section: Introductionmentioning

confidence: 99%

Electron color center creation in LiF irradiated with Kr ions

Dauletbekova

Аkilbekov

Zdorovets

2010

Physica Status Solidi (b)

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“…Recently the hardening created by high-energy (MeV-GeV) ions in single crystals of lithium fluoride has been the subject of a number of studies [1][2][3][4][5]. However, so far the nature of radiation defects responsible for hardening (possibly small Li colloids, clusters of molecular fluorine and vacancies) is not clearly identified.…”

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confidence: 99%

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

Manika

Maniks

Kūlis

et al. 2005

phys. stat. sol. (c)

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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. -5]. However, so far the nature of radiation defects responsible for hardening (possibly small Li colloids, clusters of molecular fluorine and vacancies) is not clearly identified. A study of thermal stability of these defects and recovery of hardness and optical absorbance by thermal annealing of LiF crystals irradiated with fast nickel ions is reported hereafter.

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