Detection threshold control of CR-39 plastic nuclear track detectors for the selective measurement of high LET secondary charged particles

S. Kodaira; N. Yasuda; H. Kawashima; M. Kurano; S. Naka; S. Ota; Y. Ideguchi; Nobuyuki Hasebe; K. Ogura

doi:10.1016/j.radmeas.2011.08.015

Detection threshold control of CR-39 plastic nuclear track detectors for the selective measurement of high LET secondary charged particles

S. Kodaira^*, N. Yasuda, H. Kawashima, M. Kurano, S. Naka, S. Ota, Y. Ideguchi, Nobuyuki Hasebe, K. Ogura

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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 LETH₂O range of 30-750 keV/μm 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 °C 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.

Original language	English
Pages (from-to)	1782-1785
Number of pages	4
Journal	Radiation Measurements
Volume	46
Issue number	12
DOIs	https://doi.org/10.1016/j.radmeas.2011.08.015
Publication status	Published - 2011 Dec

Keywords

CR-39
High LET particle
PEW
Secondary particle
Short range track
Space radiation
Track etching

ASJC Scopus subject areas

Radiation
Instrumentation

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10.1016/j.radmeas.2011.08.015

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title = "Detection threshold control of CR-39 plastic nuclear track detectors for the selective measurement of high LET secondary charged particles",

abstract = "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 LETH2O range of 30-750 keV/μm 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 °C 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.",

keywords = "CR-39, High LET particle, PEW, Secondary particle, Short range track, Space radiation, Track etching",

author = "S. Kodaira and N. Yasuda and H. Kawashima and M. Kurano and S. Naka and S. Ota and Y. Ideguchi and Nobuyuki Hasebe and K. Ogura",

year = "2011",

month = dec,

doi = "10.1016/j.radmeas.2011.08.015",

language = "English",

volume = "46",

pages = "1782--1785",

journal = "Radiation Measurements",

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AU - Kodaira, S.

AU - Yasuda, N.

AU - Kawashima, H.

AU - Kurano, M.

AU - Naka, S.

AU - Ota, S.

AU - Ideguchi, Y.

AU - Hasebe, Nobuyuki

AU - Ogura, K.

PY - 2011/12

Y1 - 2011/12

N2 - 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 LETH2O range of 30-750 keV/μm 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 °C 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.

AB - 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 LETH2O range of 30-750 keV/μm 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 °C 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.

KW - CR-39

KW - High LET particle

KW - PEW

KW - Secondary particle

KW - Short range track

KW - Space radiation

KW - Track etching

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JO - Radiation Measurements

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Detection threshold control of CR-39 plastic nuclear track detectors for the selective measurement of high LET secondary charged particles

Abstract

Keywords

ASJC Scopus subject areas

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