LiF-TLD的响应对致电离粒子LET的依赖性初步实验研究

The Dependence of LiF-TLD’s Response on Ionizing Particles’ LET

摘要: 对LiF热释光探测器 (TLD)的响应对致电离粒子的LET的依赖性进行了初步实验研究。用作实验研究的粒子主要是中子, 包括热中子和由7Li(p, n) 7Be、T(p, n) 3He核反应生成的中能中子、快中子 (0 0 18～ 0 94 5MeV)及 14MeV中子。实验结果表明 :LiF(Mg、Cu、P) TLD的响应对致电离粒子LET的依赖性是显著的。对于较高能量的中子, 由LiF TLD产生的热释光量仅与6 Li、7Li在LiF TLD中导致的吸收剂量相对应, 这与某些文献的报道相一致

Abstract: The dependence of LiF thermoluminescent dosimeter’s response on LET of the ionizing particle is preliminarily investigated.In this investigation,ionizing particles are mainly neutrons,involved thermal neutrons,intermediate neutrons and fast neutrons (0.018～0.945 MeV) resulting from 7Li(p,n) 7Be and T(p,n) 3He nuclear reaction and 14 MeV neutrons. The result of experiment shows that the dependence of LiF(Mg,Cu,P)thermoluminescent dosimeter’s response on LET of the ionizing particle is very significant. For neutrons of higher energy, TL reading-out from LiF-TLD is corresponding to LiF-TLD’ absorbed dose deliviried only by 7Li and 6Li, which is consistent with the report by some literatures._