300千电子伏特至1.8兆电子伏特质子在氩气/甲烷气体中W的能量依赖性。

The energy dependence of W in argon/methane gas for 300 keV to 1.8 Me V protons.

作者信息

Nuton D H, Harris S J, Doust C E

出版信息

Phys Med Biol. 1981 Mar;26(2):245-51. doi: 10.1088/0031-9155/26/2/004.

Abstract

As part of a programme related to neutron dosimetry, the variation of the average energy per ion pair, W, has been determined for protons within the energy range 300 keV to 1.8 MeV stopped in 90% argon-10% methane gas. A gridded ion chamber was used with pulse height analysis to measure ion yield. An increase of W with decreasing energy was observed below about 1 MeV with a reversal at 450 keV.

摘要

作为与中子剂量测定相关计划的一部分，已确定能量范围在300 keV至1.8 MeV的质子在90%氩气-10%甲烷气体中停止时，每离子对平均能量W的变化。使用带有脉冲高度分析的栅网电离室来测量离子产额。在约1 MeV以下观察到W随能量降低而增加，在450 keV处出现反转。