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Lithium deposition on high energy irradiated LiF crystals

S. POLOSAN1,*

Affiliation

  1. National Institute of Materials Physics, Bucharest-Romania PO Box, MG-7

Abstract

Lithium metallic colloids were studied in ion-implanted LiF crystals, irradiated with high energy He+ particles. The presence of metallic particles, displaying absorption bands at 420 and 460 nm due to the scattering of light on these particles, overlaps the absorption of M centers. The luminescence excited in this band, which is a superposition between the absorption of F2 and F3 + centers, is reduced due to the metallic lithium particles, formed on the surface of the irradiated and at the end of the tracks of He+ particles, reducing the luminescence of the formed color centers. Diminution of the M band together with the growing of the 420 nm band versus irradiation doses, suggest a transformation of the color centers in small Fn-aggregates during the irradiation process, followed by a metallic conversion of Li ions..

Keywords

Metallic particles, Light scattering, Luminescence, High energy He+ particles.

Submitted at: Nov. 14, 2006
Accepted at: May 15, 2007

Citation

S. POLOSAN, Lithium deposition on high energy irradiated LiF crystals, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 5, pp. 1306-1309 (2007)