検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Conversion coefficients from fluence to effective dose for heavy ions with energies up to 3 GeV/A

3GeV/A以下の重イオンに対する実効線量換算係数の評価

佐藤 達彦  ; 津田 修一  ; 坂本 幸夫; 山口 恭弘; 仁井田 浩二*

Sato, Tatsuhiko; Tsuda, Shuichi; Sakamoto, Yukio; Yamaguchi, Yasuhiro; Niita, Koji*

重イオンに対する線量換算係数の評価は、放射線防護の目的から極めて重要である。そこで、最新の重イオン輸送計算コードPHITSを用いて、3GeV/A以下のエネルギーを持つ陽子,重陽子,$$^{3}$$H,$$^{3}$$He,$$alpha$$粒子,$$^{12}$$C,$$^{20}$$Ne,$$^{40}$$Ar,$$^{40}$$Ca及び$$^{56}$$Feに対する実効線量換算係数を計算した。得られた結果より、重イオンの種類に依存しないフィッティング式を導出し、その精度を検討した。

Radiological protection against high energy heavy ions has been an essential issue in the planning of long-term space missions. We calculated fluence to effective dose conversion coefficients for heavy ions using the Particle and Heavy Ion Transport code System PHITS coupled with an anthropomorphic phantom of the MIRD5 type. The calculations were performed for incidences of protons and typical space heavy ions with energies up to 3 GeV/A in the isotropic and anterior-posterior irradiations. Based on the results, we propose a simple fitting formula that can predict the effective dose from almost all kinds of space heavy ions below 3 GeV/A within an accuracy of 30%.

Access

:

- Accesses

InCites™

:

パーセンタイル:77.74

分野:Environmental Sciences

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.