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Source of luminescence of water lower energy than the Cerenkov-light threshold during irradiation of carbon-ion
https://repo.qst.go.jp/records/49088
https://repo.qst.go.jp/records/4908807474f86-2417-45f6-b0b9-4aee346311ed
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-06-25 | |||||
タイトル | ||||||
タイトル | Source of luminescence of water lower energy than the Cerenkov-light threshold during irradiation of carbon-ion | |||||
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 | |||||
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 |
Yamamoto, (Nagoya Univ.) Seiichi
× Yamamoto, (Nagoya Univ.) Seiichi× Akagi, (Hyogo Ion Beam Medical Center) Takashi× Yamashita, (Hyogo Ion Beam Medical Center) Tomohiro× Toivonen, (Tampere University of Technology) Juha× Yamaguchi, Mitsutaka× Komori, (Nagoya Univ.) Masataka× Kawachi, Naoki× 山口 充孝× 河地 有木 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Although luminescence of water during irradiations of proton and carbon-ion lower energy than the Cerenkov-light threshold were found recently, the sources of the luminescence were not yet obvious. To estimate the sources of the luminescence, we measured the light spectrum of the luminescence of water during carbon-ion irradiations and estimated the sources of the luminescence. Using an ultraviolet (UV) light sensitive charge coupled device (CCD) camera, we measured the luminescence images of water during carbon-ion beam irradiations by changing optical filters, derived the light spectra of the luminescence of water and compared with the calculated results. The intensity of the measured light spectrum of the luminescence of water at the Bragg peak region was decreased as the wavelength of light proportional to ~ λ to the -2.0th power where λ is the wavelength of the light, indicating the source of the luminescence of water can be electromagnetic pulse produced by the dipole displacement inside the water molecules. In the shallow part of the water prior to the Bragg peak, where the Cerenkov-light is included, the spectrum showed steeper curve that is proportional to ~ λ to the -2.6th power, which was similar to the calculated spectrum of Cerenkov-light including the refractive index changes of water with the wavelength of light. From these results, the luminescence of water is thought to be mainly come from electromagnetic pulse produced by the dipole displacement inside the water molecules. | |||||
書誌情報 |
Journal of Physics Communications 巻 2, p. 065010-1-9, 発行日 2018-06 |
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出版者 | ||||||
出版者 | IOP Science | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2399-6528 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/2399-6528/aaca28 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://iopscience.iop.org/article/10.1088/2399-6528/aaca28/meta | |||||
関連名称 | http://iopscience.iop.org/article/10.1088/2399-6528/aaca28/meta |