@article{oai:repo.qst.go.jp:00046216,
 author = {Kodaira, Satoshi and Yasuda, Nakahiro and Kawashima, Hajime and Kurano, Mieko and Naka, Shuichiro and Ota, Syuya and Ideguchi, Yusuke and Hasebe, Nobuyuki and Ogura, Kouichi and 小平 聡 and 安田 仲宏 and 川嶋 元 and 蔵野 美恵子 and 仲 秀一郎 and 太田 周也 and 井手口 悠介},
 issue = {12},
 journal = {Radiation Measurements},
 month = {Dec},
 note = {The two-step etching method using PEW (Potassium hydroxide + Ethanol + Water) and NaOH solutions was applied to the control of the response of CR-39 plastic nuclear track detectors for the measurement of high LET (linear energy transfer) particles. CR-39 detectors were exposed to several heavy ion beams covering the LET_H2O range of 30-750 keV/um from HIMAC (Heavy Ion Medical Accelerator in Chiba) at NIRS (National Institute of Radiological Sciences), Japan. The detectors were pre-etched in PEW solutions with 3 different ethanol concentrations at the temperature of 70 degC for 30-60 min. Then, the detectors were post-etched in 7N NaOH solution at the same temperature for 4-28 h. We found that the response curves and the detection thresholds of the detectors smoothly shifted to higher LET regions as the ethanol concentration increases in PEW solution.},
 pages = {1782--1785},
 title = {Detection threshold control of CR-39 plastic nuclear track detectors for the selective measurement of high LET secondary charged particles},
 volume = {46},
 year = {2011}
}