基于CR-39固体探测器的粒子识别

徐秀清; 夏晓彬; 李洋; 蔡军; 陈畅其; 黄文博; 谢桂英; 高崚威

doi:10.11889/j.1000-3436.2018.rrj.36.040401

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基于CR-39固体探测器的粒子识别

辐射技术的应用 | 更新时间：2021-12-10

- 基于CR-39固体探测器的粒子识别
- Particle identification using CR-39 solid state nuclear track detector
- 辐射研究与辐射工艺学报 2018年36卷第4期
- 作者机构：
  
  1.中国科学院上海应用物理研究所上海 201800
  2.中国科学院大学北京 100049
  3.华中科技大学同济医学院附属同济医院武汉 430030
- 作者简介：
  
  [ "徐秀清, 女, 1991年4月出生, 2014年于南京理工大学获学士学位, 现为硕士研究生, 研究领域为辐射防护", "XU Xiuqing (female) was born in April 1991, and received her bachelor's degree from Nanjing University of Science and Technology in 2014. Now she is a master candidate, majoring in radiation protection" ]
  夏晓彬, 研究员, E-mail:xiaxiaobin@sinap.ac.cn XIA Xiaobin, professor, E-mail:xiaxiaobin@sinap.ac.cn
- 基金信息：
  
  中国科学院战略性先导科技专项(XDA02050100)
- DOI：10.11889/j.1000-3436.2018.rrj.36.040401
  中图分类号：
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徐秀清, 夏晓彬, 李洋, 等. 基于CR-39固体探测器的粒子识别[J]. 辐射研究与辐射工艺学报, 2018,36(4):040401-10.

Xiuqing XU, Xiaobin XIA, Yang LI, et al. Particle identification using CR-39 solid state nuclear track detector[J]. Journal of Radiation Research and Radiation Processing, 2018,36(4):040401-10.
徐秀清, 夏晓彬, 李洋, 等. 基于CR-39固体探测器的粒子识别[J]. 辐射研究与辐射工艺学报, 2018,36(4):040401-10. DOI： 10.11889/j.1000-3436.2018.rrj.36.040401.

Xiuqing XU, Xiaobin XIA, Yang LI, et al. Particle identification using CR-39 solid state nuclear track detector[J]. Journal of Radiation Research and Radiation Processing, 2018,36(4):040401-10. DOI： 10.11889/j.1000-3436.2018.rrj.36.040401.

摘要

为了掌握利用CR-39固体核径迹探测器识别α粒子和质子的方法，应用粒子与物质相互作用理论和径迹蚀刻动力学经验模型，模拟了α粒子和质子在CR-39固体核径迹探测器上的径迹形貌，计算出了3~8 MeV的α粒子和1~9 MeV的质子最佳蚀刻条件。根据对应的最佳蚀刻条件，计算获得的α粒子和质子的径迹直径、灰度值、径迹深度，并据此对相同能量的α粒子和质子、不同能量的α粒子、不同能量的质子进行识别。同时，采用CR-39固体探测器对α粒子(5.48 MeV)和质子(3 MeV)进行了实验测量，在模拟计算所获得的最佳蚀刻条件下，实验测读了α粒子径迹。实验测量得到的α粒子径迹直径与模拟值相差0.36%~9.70%。实验测量的最佳蚀刻时间和模拟的最佳蚀刻时间相差5.60%，这些结果验证了模拟方法的可行性。

Abstract

To identify a-particles and protons using CR-39 solid state nuclear track detector (CR-39 SSNTD), track growth model and interaction theory between particles and media were applied and the profile and appearance of the tracks produced by α-particles and protons on the CR-39 SSNTD were simulated. In addition, the optimal chemical etching conditions for 3~8 MeV α-particles and 1~9 MeV protons were calculated. The corresponding diameters, depths and the gray level values of the tracks for the optimal chemical etching conditions were simulated to identify the α-particles and protons with the same energy and different energies. To verify the simulation method, a CR-39 SSNTD was used to measure the tracks made by 5.84 MeV α-particles and 3 MeV protons. The differences between the experimental and simulated diameters of the tracks ranged between 0.36%~9.70%. For the optimal etching conditions obtained from simulation, a difference of 5.6% was observed between the experimental and simulated chemical etching time. These results are preliminary proof of the feasibility and validity of the simulation method.

关键词

CR-39固体核径迹探测器蚀刻条件α粒子质子

Keywords

CR-39Solid state nuclear track detectorEtching conditionsα-particleProton

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