Abstract

This paper aims to evaluate the range and stopping power of alpha particles in argon gas at different pressure of 0 to 1 bar, using the alpha radiation energy. The results show that the energy of the passed alpha particles has been decreased with increasing pressure in a small vacuum chamber. It is also observed that the amount of alpha particles reaching the detector follows a decreasing behavior as the distance increases. Experimental, SRIM and theoretical results for range and stopping power are closely in a good agreement. The errors in the measured range and stopping power data results from random. Only random errors have been considered in the present analysis and were estimated from pressure measurements and the uncertainty of the gas temperature.

中文翻译：

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压力对氩气中α粒子的阻止能力的影响

摘要

本文旨在利用α辐射能评估在0至1 bar的不同压力下氩气中α粒子的范围和阻止能力。结果表明，在较小的真空室内，通过的α粒子的能量随着压力的增加而降低。还可以观察到，随着距离的增加，到达检测器的α粒子的数量将遵循减少的行为。范围和制动力的实验，SRIM和理论结果非常吻合。测量范围和停止功率数据中的误差是随机产生的。在本分析中，仅考虑了随机误差，并根据压力测量值和气体温度的不确定性进行了估计。