Response of polymeric etched track detectors and modified structure around the ion tracks
| Project/Area Number |
16K05002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General applied physics
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2016-10-21 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 固体飛跡検出器 / エッチング型飛跡検出器 / ポリアリルジグリコールカーボネート / ポリカーボネート / ポリエチレンテレフタレート / ポリイミド / 放射線化学収率 / イオントラック内径方向電子フルエンス / 検出閾値 / イオントラック構造分析 / イオントラック形成機構 / PADC / PET / PC / PI / イオントラック / ビスフェノールAポリカーボネート / 赤外線分光 / 潜在飛跡 / 高分子 / 放射線 |
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| Outline of Final Research Achievements |
Modified structure around latent tracks in polymeric etched track detectors has been examined, including Poly(allyl diglycol carbonate) PADC, Bisphenol A polycarbonate PC, Poly(ethylene terephthalate) PET and Polyimide PI. A series of quantitative analyses on the changes in the density of each functional group composing the polymers has provided the chemical damage parameters of the damage density. These include the number of losses of considered functional groups per unit distance of the track length, effective track core radius, in which the chemical groups are lost, and the radiation chemical yields, G values, for each group. These are evaluated as a function of the stopping power, ranging from 1 to 12,000eV/nm. The role of multi-hits with low energy electron to form any permanent damage is emphasized by proposing the new physical concept of Radial Electron Fluence around Ion Tracks.
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| Academic Significance and Societal Importance of the Research Achievements |
新しい検出器開発のために高分子系飛跡検出器中のイオントラック構造を研究し、種々の高分子材料中のイオントラックに関する他に類を見ないデータベースを確立した。イオントラックの化学構造データは、検出器としてのエッチングテスト結果と対をなしている。分析化学的な方法を利用した重イオンと低LET放射線実験による定量的データに基づいて、局所線量とは別に、２次電子のヒット数で議論することが可能であり、より現実的なトラック形成機構が議論できることを示した。PADCについて言えば、繰り返し構造に２個以上の電子がヒットすると損傷が生まれる。モンテカルロ法にてイオントラック内径方向電子フルエンスの最初の計算を行った。
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Report
(4 results)
Research Products
(50 results)
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[Journal Article] Radial electron fluence around ion tracks as a new physical parameter for the detection threshold of PADC using Geant4-DNA toolkit2018
Author(s)
Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Masato Kanasaki, Yutaka Mori, Keiji Oda, Abdel-Mjid Nourreddine, Hisaya Kurashige, Michel Fromm, Pierre Cloutier, Andrew D Bass, Leon Sanche, Satoshi Kodaira, Remi Barillon, Tomoya Yamauchi
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Journal Title
Radiation Measurements
Volume: 118
Pages: 50-53
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Radiolysis of phenylalanine in solution with Bragg-Peak energy protons2018
Author(s)
N. Ludwig, Tamon Kusumoto, C. Galindo, P. Peaupardin, S. Pin, J.-P. Renault, D. Muller, TomoyaYamauchi, Satoshi Kodaira, Remi Barillon, Quentin Raffy
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Journal Title
Radiation Measurements
Volume: 116
Pages: 55-59
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Radial electron fluence around ion tracks as a new physical parameter for the detection threshold of PADC using Geant4-DNA toolkit2017
Author(s)
Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Masato Kanasaki, Keiji Oda, Abdel-Mijid Nourredine, Hisaya Kurashige, Remi Barillon, Tomoya Yamauchi
Organizer
27th International Conference on Nuclear Tracks and Radiation Measurements, The University of Strasbourg
Related Report
Int'l Joint Research
