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重粒子線のトラック構造と高LET効果
https://repo.qst.go.jp/records/43724
https://repo.qst.go.jp/records/43724618d89c7-bafd-4842-a33e-3e492a23615e
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2005-07-08 | |||||
| タイトル | ||||||
| タイトル | 重粒子線のトラック構造と高LET効果 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
佐藤, 幸夫
× 佐藤, 幸夫× 大澤, 大輔× 岡田, 裕樹× 佐藤 幸夫× 大澤 大輔× 岡田 裕樹 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We measured the energy and angular distributions(7-1000 eV and 20-160) of secondary electrons produced in the collision of 6.0 MeV/u He2+ ions with vapor, in order to discuss a relation between the track structure and high-LET effects. From these measurement the doubly diffrntial cross sections (DDCS) of electron emissions were deduced with an estimated uncertainty of +-13 percents. The energy distribution with the empiruical(SDCS) was also obtained by integrating the DDCS values with respect to the ejected angles and compared with the empirical model of Rudd.The energy spectrum(SDCS) showed a good agreement with the model of Rudd in the energy range<100eV.However,in the range 100-1000 eV the SDCS showed large discrepancies by -40percents,and was nearly twice greater in the region>3keV. To assess the new cross sections these values were incorporated in the kurbuc Monte Carlo track structure code system for simulation of secondary electrons.Radial dose distributions were obtained by analyzing the tracks generated by the code kurbuc using the new DDCS values. In the core with the radius(gamma) less than 1nm the dose is very high due mainly to excitation events induced by low-energy electrons,while the penumbra shows a well-known gumma-2 dependence. | |||||
| 書誌情報 |
放射線 巻 31, 号 1, p. 33-40, 発行日 2005-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0285-3604 | |||||
