LET dependence of TSL properties in Ce:LiCaAlF6 crystals

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:409

Article; Proceedings Paper

Nakauchi, Daisuke¹  Koshimizu, Masanori²  Okada, Go¹  Koba, Yusuke³  Fukuda, Kentaro⁴  Fujimoto, Yutaka²  Kawaguchi, Noriaki¹  Asai, Keisuke²  Yanagida, Takayuki¹ 

[1] Nara Inst Sci & Technol NAIST, Grad Sch Mat Sci, Ikoma, Nara 6300192, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Ibaraki 9808579, Japan

[3] Natl Inst Radiol Sci, Inage Ku, Chiba 2638555, Japan

[4] Tokuyama Corp, 1-1 Mikage, Shunan, Yamaguchi 7458648, Japan

关键词: Thermally-stimulated luminescnece;    Linear energy transfer;    Heavy charged particle;   

DOI  :  10.1016/j.nimb.2017.04.004

来源: Elsevier

【 摘 要 】

We have investigated thermally-stimulated luminescence (TSL) properties of Ce-doped LiCaAIF(6) crystals irradiated with ionizing radiations of different linear energy transfers (LET)- X-rays and He ion beams. It was found that the TSL glow peaks mainly appeared around 120 and 250-400 degrees C, and the ratio of the former peak intensity to the latter was found to decrease with increasing the LET. Furthermore, together with the TSL properties measured with X-rays, diffusion length of electron-hole pairs was estimated to lie in a range of 30-120 nm depending on the LET and concentration of Ce. (C) 2017 Elsevier B.V. All rights reserved.

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