Lithium lactate as an ESR dosimeter

被引：22

作者：

Hassan, GM ^{[1
]}

Ikeya, M ^{[1
]}

Toyoda, S ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 560, Japan

来源：

APPLIED RADIATION AND ISOTOPES | 1998年 / 49卷 / 07期

关键词：

D O I：

10.1016/S0969-8043(97)10010-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The feasibility of lithium lactate (Li-lactate: CH3CH(OH)COOLi) as an electron spin resonance (ESR) dosimeter material has been studied and compared with lactose and a conventional alanine dosimeter. The ESR spectra of Li-lactate and lactose with the spectroscopic splitting g-factors of 2.0029 +/- 0.0003 and 2.0043 +/- 0.0003 respectively show hyperfine splitting with an intensity ratio of 1:3:3:1 and hyperfine coupling constants (A/g beta) of 1.82 +/- 0.06 and 1.88 +/- 0.06 mT, respectively. The radical formation efficiency (G-value), i.e. the number of free radicals per 100 eV for alanine, Li-lactate and lactose were 0.95, 1.0 and 3.0, respectively. The sensitivity of Li-lactate to gamma-rays is 10 times higher than that of alanine and 0.3 of lactose. The signal stability of Li-lactate was greater than that of lactose. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：823 / 828

页数：6