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rays in the 
La(
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La reactionOkuizumi, Mao*; Auton, C. J.*; Endo, Shunsuke; Fujioka, Hiroyuki*; Hirota, Katsuya*; Ino, Takashi*; Ishizaki, Kohei*; Kimura, Atsushi; Kitaguchi, Masaaki*; Koga, Jun*; et al.
Physical Review C, 111(3), p.034611_1 - 034611_6, 2025/03
Times Cited Count：0 Percentile：74.26(Physics, Nuclear)Hirato, Misaki*; Yokoya, Akinari*; Baba, Yuji*; Mori, Seiji*; Fujii, Kentaro*; Wada, Shinichi*; Izumi, Yudai*; Haga, Yoshinori
Physical Chemistry Chemical Physics, 25(21), p.14836 - 14847, 2023/05
Times Cited Count：2 Percentile：19.16(Chemistry, Physical)Izumi, Yudai; Yamamoto, Satoshi*; Fujii, Kentaro; Yokoya, Akinari
Hoshasen Seibutsu Kenkyu, 51(1), p.91 - 106, 2016/03
no abstracts in English
Izumi, Yudai; Yamamoto, Satoshi*; Fujii, Kentaro; Yokoya, Akinari
Radiation Research, 184(5), p.554 - 558, 2015/11
Times Cited Count：7 Percentile：30.07(Biology)
-edge soft X-ray natural circular dichroism of histidine thin filmIzumi, Yudai; Tanaka, Masahito*; Tanigawa, Yoshiaki*; Tanabe, Maiko*; Momoki, Yohei*; Iwai, Miki*; Takenaka, Shun*; Ishiyama, Kimihiro*; Kuroki, Misa*; Muro, Takayuki*; et al.
Journal of Physics; Conference Series, 502(1), p.012038_1 - 012038_4, 2014/04
Times Cited Count：2 Percentile：69.24(Materials Science, Multidisciplinary)-edge circular dichroism spectra of amino acid films by improved measurement techniqueIzumi, Yudai*; Tanabe, Maiko*; Imazu, Akiko*; Mimoto, Aki*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*; Nakagawa, Kazumichi*
Journal of Chemical Physics, 138(7), p.074305_1 - 074305_10, 2013/02
Times Cited Count：10 Percentile：32.94(Chemistry, Physical)no abstracts in English
Nakagawa, Kazumichi*; Matsui, Takahiro*; Izumi, Yudai*; Agui, Akane; Tanaka, Masahito*; Muro, Takayuki*
Radiation Physics and Chemistry, 78(12), p.1198 - 1201, 2009/12
Times Cited Count：4 Percentile：29.10(Chemistry, Physical)Chemical-evolution in glycilglycine (Gly2) films irradiated by 146 nm light was studied. It was found that quantum efficiency of chemical evolution from Gly2 to glycilglycilglycine (Gly3) is smaller than that to glycilglycilglycilglycine (Gly4) due to the multiple step of reaction. From natural circular dichroism spectra measurements for serine and alanine films, we found the splitting of 1s
transitions in the energy region of oxygen 1s.
Izumi, Yudai*; Imazu, Akiko*; Mimoto, Aki*; Tanaka, Masafumi*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*
Journal of Physics; Conference Series, 190, p.012209_1 - 012209_4, 2009/11
Times Cited Count：9 Percentile：87.93(Physics, Condensed Matter)Soft X-ray natural circular dichroism spectra of serine and alaninethin films, were measured in absolute value with the focus at the oxygen 1s to transition of COO
. The soft X-ray natural circular dichroism spectra intensity of L-Ala was about ten times as large as that of L-Ser. Those differences would reflect the chiral environment of the core hole oxygen atoms of COO.
Izumi, Yudai*; Tanabe, Maiko*; Imazu, Akiko*; Mimoto, Aki*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*
no journal, ,
We measured soft X-ray natural circular dichroism (SXNCD) of aspartic acid (Asp) and tyrosine (Tyr) at oxygen K-edge region, in an attempt to obtain chiral structure at the vicinity of oxygen atoms. SXNCD measurement was carried out at the BL25SU beamline of the SPring-8, Japan. We focused on oxygen COO 1s transitions around 533 eV. Since we used sublimation films which are randomly oriented samples, we could reject E1E2 mechanism and pick up only E1M1 mechanism.
Izumi, Yudai
no journal, ,
Izumi, Yudai*; Kaneko, Fusae*; Kitada, Tomo*; Kamohara, Masumi*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*; Matsushita, Tomohiro*
no journal, ,
no abstracts in English
Yamamoto, Satoshi; Izumi, Yudai; Fujii, Kentaro; Yokoya, Akinari
no journal, ,
no abstracts in English
Fujii, Kentaro; Izumi, Yudai; Narita, Ayumi*; Krishna, G.*; Alain, T.*; Rodolphe, V.*; Marie-Pierre, G.*; Marie-Francoise, P.*; Marie-Anne, H.*; Yokoya, Akinari
no journal, ,
In order to reveal the role of hydration water on the process by ionizing radiations, we measured a mass spectrum of ions desorbing from hydrated dR films exposed to monochromatic soft X-rays (560 eV). We observed positive ions to examine the effect of Coulomb explosion of valence holes produced as a result of Auger decay after the ionization. Desorbing positive ions were detected by a quadrupole mass spectrometer positioned at ~30 mm from the sample. The yield of desorbing ions which were produced by the destruction of the furanose ring structure of dR, obviously supressed when one layer of water molecules was deposited onto the film. This result suggests that the hydration water layer on the film attenuates the intense destruction of the furanose ring structure induced by the ionization of K-shell electrons of oxygen, or the desorption of the resulting fragment ions from the sample film.
Fujii, Kentaro; Izumi, Yudai; Narita, Ayumi*; Krishna, G.*; Alain, T.*; Rodolphe, V.*; Marie-Pierre, G.*; Marie-Francoise, P.*; Marie-Anne, H.*; Yokoya, Akinari
no journal, ,
In order to reveal the role of hydration water on the process in terms of Auger effect of DNA constituent atoms, we measured a mass spectrum of ions desorbing from hydrated deoxyribose (dR) films exposed to monochromatic soft X-rays (560 eV). Desorbing positive ions were detected by a quadrupole mass spectrometer to examine the effect of Coulomb explosion of valence holes produced as a result of Auger decay after the ionization. The yield of desorbing ions which were produced by the destruction of the furanose ring structure of dR, obviously supressed when one layer of water molecules was deposited onto the film. This result suggests that the hydration water layer on the film inhibits the intense destruction of the furanose induced by the ionization of K-shell electrons of oxygen, or the desorption of the resulting fragment ions from the sample film.
Izumi, Yudai; Matsuo, Koichi*; Fujii, Kentaro; Yokoya, Akinari
no journal, ,
Izumi, Yudai*; Kamohara, Masumi*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*; Matsushita, Tomohiro*
no journal, ,
no abstracts in English
Fujii, Kentaro; Izumi, Yudai; Narita, Ayumi; Yokoya, Akinari
no journal, ,
no abstracts in English
Izumi, Yudai*; Kamohara, Masumi*; Nakagawa, Kazumichi*; Tanaka, Masahito*; Agui, Akane; Muro, Takayuki*; Matsushita, Tomohiro*
no journal, ,
no abstracts in English
Fujii, Kentaro; Izumi, Yudai; Narita, Ayumi; Yokoya, Akinari; Herv
du Penhoat, M.-A.*; Touati, A.*; Vuilleumier, R.*; Gaigeot, M.-P.*; Politis, M.-F.*
no journal, ,
no abstracts in English
Izumi, Yudai; Matsuo, Koichi*; Fujii, Kentaro; Yokoya, Akinari
no journal, ,
no abstracts in English
