Quasi-dynamic structural disorder induced by fast neutrons in Be3Al2Si6O18 crystals / Weinstein I.A., Zatsepin A.F., Kortov V.S. // Physics of the Solid State. - 2001. - V. 43, l. 2. - P. 246-250.

ISSN:
10637834
Type:
Article
Abstract:
The UV absorption spectra of beryl crystals exposed to fast neutrons with a fluence of 1014-1019 cm-2 are investigated. It is found that as the fluence of particles increases, a characteristic fan-shaped broadening of the long-wavelength edge is observed for the impurity adsorption band with a charge transfer. The experimental results are interpreted on the basis of the generalized Urbach rule in the approximation of an induced quasi-dynamic disorder. The effective cross section of radiation-induced lattice disordering in the crystals under investigation is estimated at a value (σ = 2.58 × 10-18 cm2) close to the neutron amorphization cross sections for other crystalline silicates. © 2001 MAIK "Nauka/Interperiodica".
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DOI:
10.1134/1.1349468
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Affiliations Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation
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Correspondence Address Weinstein, I.A.; Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation; email: wia@dpt.ustu.ru
Language of Original Document English
Abbreviated Source Title Phys. Solid State
Source Scopus