C-CO₂、Mg-Ar和TE-TE电离室中子灵敏度的能量依赖性。

Energy dependence of the neutron sensitivity of C--CO2, Mg--Ar and TE--TE ionisation chambers.

作者信息

Waterman F M, Kuchnir F T, Skaggs L S, Kouzes R T, Moore W H

出版信息

Phys Med Biol. 1979 Jul;24(4):721-33. doi: 10.1088/0031-9155/24/4/004.

PMID:472009

Abstract

The neutron sensitivity relative to 60Co of commercially available C--CO2, Mg--Ar and TE--TE ionisation chambers was measured as a function of energy from 1 to 44 MeV. The sensitivity function was obtained by the method of Kuchnir, Vyborny and Skaggs from differences in measurements made at two angles in mixed fields having an isotropic gamma-ray component. Such fields were produced by bombardment of a thick beryllium target with 16 and 28 MeV deuterons, 44 MeV 3He-ions and 35 and 46 MeV protons. The results show that the relative neutron sensitivity of the C--CO2 and Mg--Ar chambers increases continuously with energy, whereas that of the TE--TE chamber is relatively constant.

摘要

测量了市售C-CO₂、Mg-Ar和TE-TE电离室相对于⁶⁰Co的中子灵敏度随能量从1 MeV到44 MeV的变化。灵敏度函数是通过Kuchnir、Vyborny和Skaggs的方法，根据在具有各向同性γ射线成分的混合场中两个角度测量的差异得到的。这些场是通过用16 MeV和28 MeV的氘核、44 MeV的³He离子以及35 MeV和46 MeV的质子轰击厚铍靶产生的。结果表明，C-CO₂和Mg-Ar电离室的相对中子灵敏度随能量连续增加，而TE-TE电离室的相对中子灵敏度相对恒定。