Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Kazumasa Narumi"'
Publikováno v:
Quantum Beam Science, Vol 6, Iss 1, p 12 (2022)
Sputtering yields of Si have been measured for C60 ions in the energy range from 10 to 540 keV, where the nuclear stopping is dominant, by measuring thickness change of a pre-amorphized layer with conventional Rutherford-backscattering spectroscopy.
Externí odkaz:
https://doaj.org/article/bdb0ccc132f04d57be1af7622aeedfeb
Autor:
Hiroshi Amekura, Kazumasa Narumi, Atsuya Chiba, Yoshimi Hirano, Keisuke Yamada, Shunya Yamamoto, Yuichi Saitoh
Publikováno v:
Quantum Beam Science, Vol 6, Iss 1, p 4 (2022)
Quartz (SiO2) crystals possess intrinsic columnar pores perpendicular to (0001) surfaces, consisting of three- and six-membered ring (3MR and 6MR) structures of Si and O atoms. The diameters of the larger pores, i.e., 6 MRs, are ~0.49 nm, while the d
Externí odkaz:
https://doaj.org/article/0948d3cd6f7d4871a16f46064cf5911e
Autor:
Yoshihiro Hase, Katsuya Satoh, Atsuya Chiba, Yoshimi Hirano, Kengo Moribayashi, Kazumasa Narumi
Publikováno v:
Quantum Beam Science, Vol 5, Iss 3, p 25 (2021)
The unique energy transfer characteristics of swift cluster ions have attracted the attention of many researchers working on the analysis or processing of material surfaces, but the effects on living organisms remain unclear. We irradiated B. subtili
Externí odkaz:
https://doaj.org/article/45a48828938d4c8fb0596285a00265ac
Publikováno v:
Quantum Beam Science, Vol 4, Iss 1, p 13 (2020)
We developed novel methods for producing negative C60 ion beams at the accelerator facility Takasaki Ion Accelerators for Advanced Radiation Application (TIARA) to increase the current intensity of swift C60 ion beams accelerated to the MeV energy re
Externí odkaz:
https://doaj.org/article/82b9e0e00e484e21bb86b37e8a105f95
Autor:
Yoshihiro Hase, Katsuya Satoh, Atsuya Chiba, Yoshimi Hirano, Shigeo Tomita, Yuichi Saito, Kazumasa Narumi
Publikováno v:
Quantum Beam Science, Vol 3, Iss 2, p 8 (2019)
Cluster ion beams have unique features in energy deposition, but their biological effects are yet to be examined. In this study, we employed bacterial spores as a model organism, established an irradiation method, and examined the lethal effect of 2
Externí odkaz:
https://doaj.org/article/8328daafe6904ee6a2266b37ce29a227
Autor:
Kazumasa Narumi, Tokihiro Ikeda, Mitsunori Kurahashi, Manabu Saito, Markus Wilde, Yuji Nakano, Kunikazu Ishii, Norio Okabayashi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 483:29-32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c0b7eda44b3385874ace6da8a684707
https://doi.org/10.1016/j.nimb.2020.09.002
https://doi.org/10.1016/j.nimb.2020.09.002
Autor:
Yoshihiro, Hase, Katsuya, Sato, Kengo, Moribayashi, Atsuya, Chiba, Yoshimi, Hirano, Kazumasa, Narumi
クラスターイオンは複数の原子がnm距離に近接した状態で物質に入射することから、特徴的なエネルギー付与を示すが、生物試料に対する致死効果及び変異誘発効果は調べられていなか
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::58f6f420cb8301d4021ccd52dd2dda8a
https://repo.qst.go.jp/records/85404
https://repo.qst.go.jp/records/85404
Autor:
Naoto Oishi, Yoshiki Murao, Noriko Nitta, Hidetsugu Tsuchida, Shigeo Tomita, Kimikazu Sasa, Kouichi Hirata, Hiromi Shibata, Yoshimi Hirano, Keisuke Yamada, Atsuya Chiba, Yuichi Saitoh, Kazumasa Narumi, Yasushi Hoshino
Publikováno v:
Journal of Vacuum Science & Technology A. 40:063103
We study morphological changes on the Si surface induced by the C60 ion beam under various irradiation conditions. The fluence and incident energy of the C60 ion beam was 1 × 1016–1 × 1019 ions/m2 and 50 keV–9 MeV, respectively. The beam’s in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a26e8a6e63411b432c497c4c98d4f1e7
https://doi.org/10.1116/6.0002073
https://doi.org/10.1116/6.0002073
Autor:
Yoshihiro, Hase, Katsuya, Sato, Atsuya, Chiba, Yoshimi, Hirano, Kengo, Moribayashi, Kazumasa, Narumi
Publikováno v:
連携重点研究 2020（令和2）年度成果報告書.
連携重点研究として実施している課題「高速クラスタービームによる生命科学・表面界面工学への応用研究」の小テーマ１「生物影響に関するクラスター効果研究」について2020年度の成
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::483f4bf7f6632ca81e332e51587fb883
https://repo.qst.go.jp/records/83275
https://repo.qst.go.jp/records/83275
Autor:
Yamada, Keisuke, Chiba, Atsuya, Hirano, Yoshimi, Narumi, Kazumasa, Saitoh, Yuichi, Keisuke, Yamada, Atsuya, Chiba, Yoshimi, Hirano, Kazumasa, Narumi, Yuuichi, Saito
Publikováno v:
Nuclear Instruments and Methods in Physics Research B. 460:161-164
ポリメチルメタクリレート(PMMA)標的に0.12-0.54MeVのC60イオンを照射した際の二次負イオン放出特性を分析した結果を報告する。C60イオンパルスビームと飛行時間測定二次イオン質量分析法
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::c8701e7db0c6f72019e2a63ddbb73e8a
https://repo.qst.go.jp/records/79149
https://repo.qst.go.jp/records/79149