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CR-39 track detector for multi-MeV ion spectroscopy

机译:CR-39轨道探测器用于多MeV离子光谱

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摘要

We present the characteristics of track formation on the front and rear surfaces of CR-39 produced by laser-driven protons and carbon ions. A methodological approach, based on bulk etch length, is proposed to uniquely characterize the particle tracks in CR-39, enabling comparative description of the track characteristics in different experiments. The response of CR-39 to ions is studied based on the energy dependent growth rate of the track diameter to understand the intrinsic particle stopping process within the material. A large non-uniformity in the track diameter is observed for CR-39 with thickness matching with the stopping range of particles. Simulation and experimental results show the imprint of longitudinal range straggling for energetic protons. Moreover, by exploiting the energy dependence of the track diameter, the energy resolution (δE/E) of CR-39 for few MeV protons and Carbon ion is found to be about 3%.
机译:我们介绍了由激光驱动的质子和碳离子产生的CR-39的前表面和后表面上的轨道形成的特征。提出了一种基于体蚀刻长度的方法学方法,以独特地表征CR-39中的粒子轨迹,从而能够比较描述不同实验中的轨迹特性。基于轨道直径的能量依赖性增长率研究CR-39对离子的响应,以了解材料中固有的粒子停止过程。对于CR-39,在轨道直径上观察到很大的不均匀性,其厚度与颗粒的停止范围相匹配。仿真和实验结果表明,高能质子在纵向范围内散乱。此外,通过利用轨道直径的能量依赖性,发现少量MeV质子和碳离子的CR-39的能量分辨率(δE/ E)约为3%。

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