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.
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