Particularization of alpha contamination using CR-39 track detectors

Pramana

M F Zaki1¹  Y H El-Shaer¹ 

[1] Experimental Nuclear Physics Department; 2Reactor Physics Department, Nuclear Research Center, Atomic Energy Authority, Cairo, P.O. 13759 Abu Zaabal, Egypt$$

关键词: CR-39;    etching process;    etching efficiency;    track density;    energy resolution.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Solid-state nuclear track detectors have found wide use in various domains of science and technology, e.g. in environmental experiments. The measurement of alpha activity on sources in an environment, such as air is not easy because of short penetration range of alpha particles. Furthermore, measurement of alpha activity by most gas ionization detectors suffers from high background induced by the accompanying gamma radiation. Solid state nuclear track detectors (SSNTDs) have been used successfully as detecting devices and as a passive system to detect alpha contamination on different surfaces. This work presents the response of CR-39 (for two types) to alpha particles from two sources, 238Pu with energy 5 MeV and 241Am with energy 5.4 MeV. The methods of etching and counting are investigated, along with the achievable linearity, efficiency and reproducibility. The sensitivity to low activity and energy resolution are studied.

【 授权许可】

Unknown