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Charge-weighted quality factors based on LET for practical dose assessment of space radiation
https://repo.qst.go.jp/records/2001927
https://repo.qst.go.jp/records/20019272c9b9b99-db83-4339-ba33-43ea6830d2b3
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2025-11-12 | |||||||||
| タイトル | ||||||||||
| タイトル | Charge-weighted quality factors based on LET for practical dose assessment of space radiation | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 著者 |
Naito Masayuki
× Naito Masayuki
× Kodaira Satoshi
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | We demonstrate a new charge weighted quality factor, noted Q*, based on the practical application of particle linear energy transfer (LET) and charge (Z)-dependent quality factors for LET-based radiation dosimetry in space. Z contribution factors are defined according to the energy spectra of galactic cosmic rays (GCRs). The Z-weighted quality factor depending solely on the LET (Q*) under solar minimum conditions in free space differs by only a few percent from values obtained with spacecraft shielding or during the solar maximum spectrum. Q* values based on various biological endpoints exhibit peaks at higher LETs than those defined in ICRP-60. The reduced contribution of GCR heavy components under Q*, compared to QICRP of ICRP-60, suggests that current dose assessments may be overestimated. The proposed Q* approach is applicable to different LET- and Z-dependent quality factors, and provides practical dose evaluation using LET measurements. | |||||||||
| 書誌情報 |
Life Science and Space Research 発行日 2025-11 |
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| 出版者 | ||||||||||
| 出版者 | Elsevier Ltd. | |||||||||
| DOI | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1016/j.lssr.2025.10.002 | |||||||||
