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Ghys, L.*; Andreyev, A. N.; Huyse, M.*; Van Duppen, P.*; Antalic, S.*; Barzakh, A.*; Capponi, L.*; Cocolios, T. E.*; Cubiss, J.*; Derkx, X.*; et al.
Physical Review C, 100(5), p.054310_1 - 054310_13, 2019/11
Times Cited Count:13 Percentile:78.16(Physics, Nuclear)Barzakh, A. E.*; Cubiss, J. G.*; Andreyev, A. N.; Seliverstov, M. D.*; Andel, B.*; Antalic, S.*; Ascher, P.*; Atanasov, D.*; Beck, D.*; Biero, J.*; et al.
Physical Review C, 99(5), p.054317_1 - 054317_9, 2019/05
Times Cited Count:12 Percentile:76.08(Physics, Nuclear)Cubiss, J.*; Andreyev, A. N.; Mitsuoka, Shinichi*; Nagame, Yuichiro; Nishio, Katsuhisa; Ota, Shuya*; Wakabayashi, Yasuo*; 60 of others*
Physical Review C, 97(5), p.054327_1 - 054327_19, 2018/05
Times Cited Count:35 Percentile:93.46(Physics, Nuclear)Truesdale, V. L.*; Andreyev, A. N.; Ghys, L.*; Huyse, M.*; Van Duppen, P.*; Sels, S.*; Andel, B.*; Antalic, S.*; Barzakh, A.*; Capponi, L.*; et al.
Physical Review C, 94(3), p.034308_1 - 034308_11, 2016/09
Times Cited Count:10 Percentile:59.81(Physics, Nuclear)Nishio, Katsuhisa; Ikezoe, Hiroshi; Hofmann, S.*; Ackermann, D.*; Aritomo, Yoshihiro*; Comas, V. F.*; Dllmann, Ch. E.*; Heinz, S.*; Heredia, J. A.*; Heberger, F. P.*; et al.
AIP Conference Proceedings 1524, p.68 - 72, 2013/04
Times Cited Count:0 Percentile:0.04(Physics, Nuclear)Khuyagbaatar, J.*; Nishio, Katsuhisa; Hofmann, S.*; Ackermann, D.*; Block, M.*; Heinz, S.*; Heberger, F. P.*; Hirose, Kentaro; Ikezoe, Hiroshi; Kindler, B.*; et al.
Physical Review C, 86(6), p.064602_1 - 064602_6, 2012/12
Times Cited Count:25 Percentile:76.85(Physics, Nuclear)Morita, Kosuke*; Morimoto, Koji*; Kaji, Daiya*; Haba, Hiromitsu*; Ozeki, Kazutaka*; Kudo, Yuki*; Sumita, Takayuki*; Wakabayashi, Yasuo*; Yoneda, Akira*; Tanaka, Kengo*; et al.
Journal of the Physical Society of Japan, 81(10), p.103201_1 - 103201_4, 2012/10
Times Cited Count:167 Percentile:97.29(Physics, Multidisciplinary)An isotope of the 113th element, 113, was produced in a nuclear reaction with a Zn beam on a Bi target. We observed six consecutive decays following the implantation of a heavy particle in nearly the same position in the semiconductor detector, in extremely low background condition. The fifth and sixth decays are fully consistent with the sequential decays of Db and Lr both in decay energies and decay times. This indicates that the present decay chain consisted of 113, Rg (Z = 111), Mt (Z = 109), Bh (Z = 107), Db (Z = 105), and Lr (Z = 103) with firm connections. This result, together with previously reported results from 2004 and 2007, conclusively leads the unambiguous production and identification of the isotope 113, of the 113th element.
Nishio, Katsuhisa; Mitsuoka, Shinichi; Nishinaka, Ichiro; Makii, Hiroyuki; Wakabayashi, Yasuo*; Ikezoe, Hiroshi; Hirose, Kentaro*; Otsuki, Tsutomu*; Aritomo, Yoshihiro*; Hofmann, S.*
Physical Review C, 86(3), p.034608_1 - 034608_6, 2012/09
Times Cited Count:78 Percentile:95.42(Physics, Nuclear)Hirayama, Yoshikazu*; Mihara, Mototsugu*; Watanabe, Yutaka*; Jeong, S. C.*; Miyatake, Hiroari*; Momota, Sadao*; Hashimoto, Takashi*; Imai, Nobuaki*; Matsuta, Kensaku*; Ishiyama, Hironobu*; et al.
European Physical Journal A, 48(5), p.54_1 - 54_10, 2012/05
Times Cited Count:2 Percentile:16.73(Physics, Nuclear)Ishiyama, Hironobu*; Yamaguchi, Kanako*; Mizoi, Yutaka*; Watanabe, Yutaka*; Das, S. K.*; Hashimoto, Takashi*; Miyatake, Hiroari*; Hirayama, Yoshikazu*; Imai, Nobuaki*; Oyaizu, Mitsuhiro*; et al.
Journal of Instrumentation (Internet), 7(3), p.C03036_1 - C03036_14, 2012/03
Times Cited Count:8 Percentile:37.43(Instruments & Instrumentation)We developed an active-target type gas counter operating with low He/CO (10%) detector gas for application in studying low-energy nuclear reactions using radioactive beams. A 400-m-thick gas electron multiplier (THGEM) was used as the proportional counter for high injection rate capability. We examined the gas gain stability and the influence of ion feedback on particle tracks at high beam injection rates of up to 10 particles per second (pps) using a low-energy C beam. From the result of this examination, we found that the THGEM was found to be applicable for our active target at high injection rates of up to 10 pps.
Nishio, Katsuhisa; Ikezoe, Hiroshi; Hofmann, S.*; Ackermann, D.*; Antalic, S.*; Aritomo, Yoshihiro; Comas, V. F.*; Dllmann, Ch. E.*; Gorshkov, A.*; Graeger, R.*; et al.
EPJ Web of Conferences, 17, p.09005_1 - 09005_4, 2011/10
Times Cited Count:1 Percentile:47.43(Physics, Nuclear)Mitsuoka, Shinichi
Kaku Deta Nyusu (Internet), (100), p.27 - 30, 2011/10
JAEA is supporting activities concerning the accident of the Fukushima I Nuclear Power Plant, with every possible effort in close cooperation with research sections, facilities and sites in JAEA and its retired employees. As a member of JAEA, I took a part in environmental radiation monitoring, soil sampling in areas outside than a radius of 20 km from the power plant, supporting evacuee for their momentary return home in the 20 km evacuation zone, body radioactivity survey and health consultation hot line to public. Through my experience of the Fukushima support, I came to believe that it is important to do one's best while always caring about feelings of the inhabitants and giving the top priority to ensuring safety.
Imai, Nobuaki*; Hirayama, Yoshikazu*; Ishiyama, Hironobu*; Jeong, S.-C.*; Miyatake, Hiroari*; Watanabe, Yutaka*; Makii, Hiroyuki; Mitsuoka, Shinichi; Nagae, Daisuke*; Nishinaka, Ichiro; et al.
European Physical Journal A, 46(2), p.157 - 160, 2010/11
Times Cited Count:3 Percentile:28.74(Physics, Nuclear)Nishio, Katsuhisa; Hofmann, S.*; Heberger, F. P.*; Ackermann, D.*; Antalic, S.*; Aritomo, Yoshihiro; Comas, V. F.*; Dllmann, Ch. E.*; Gorshkov, A.*; Graeger, R.*; et al.
Physical Review C, 82(2), p.024611_1 - 024611_9, 2010/08
Times Cited Count:79 Percentile:95.97(Physics, Nuclear)Mitsuoka, Shinichi; Ikezoe, Hiroshi; Nishio, Katsuhisa; Watanabe, Yutaka*; Jeong, S. C.*; Ishiyama, Hironobu*; Hirayama, Yoshikazu*; Imai, Nobuaki*; Miyatake, Hiroari
International Journal of Modern Physics E, 19(5&6), p.989 - 996, 2010/07
Times Cited Count:0 Percentile:0.01(Physics, Nuclear)We have measured quasi-elastic scattering cross sections in reactions of Ti, Cr, Fe, Ni and Zn + Pb, relating to Pb-based cold fusion reactions for super-heavy elements 104, 106, 108, 110 and 112, respectively. A thin target of Pb was bombarded by heavy-ion beams supplied from the JAEA tandem-booster accelerator with changing the beam energy in steps of 1.5 MeV. The barrier distributions were derived from the first derivative of the excitation functions measured at backward angles of 172, 168 and 162. The centroid of the barrier distributions showed a deviation from several predicted barrier heights toward the low energy side. The shape of the barrier distributions was well reproduced by the results of a coupled-channel calculation taking account of the coupling effects of the collective vibrational excitations in the projectile and target nuclei. We have recently obtained similar results in heavier reactions of Ge and Kr + Pb.
Nishio, Katsuhisa; Ikezoe, Hiroshi; Mitsuoka, Shinichi; Nishinaka, Ichiro; Makii, Hiroyuki; Watanabe, Yutaka*; Nagame, Yuichiro; Otsuki, Tsutomu*; Hirose, Kentaro*; Hofmann, S.*
AIP Conference Proceedings 1224, p.301 - 310, 2010/04
Times Cited Count:5 Percentile:84.63(Physics, Nuclear)Nishio, Katsuhisa; Ikezoe, Hiroshi; Mitsuoka, Shinichi; Nishinaka, Ichiro; Nagame, Yuichiro; Otsuki, Tsutomu*; Hirose, Kentaro*; Hofmann, S.*
EPJ Web of Conferences, 2, p.10001_1 - 10001_3, 2010/03
Times Cited Count:0 Percentile:0.07(Physics, Nuclear)Ikezoe, Hiroshi; Mitsuoka, Shinichi; Nishio, Katsuhisa; Watanabe, Yutaka*; Jeong, S. C.*; Otsuki, Tsutomu*; Hirose, Kentaro*
Nuclear Physics A, 834(1-4), p.172c - 175c, 2010/03
Times Cited Count:1 Percentile:13.82(Physics, Nuclear)The Coulomb barrier distribution between heavy nuclei is important quantity to investigate the effect of quantum couplings of nuclear vibration and nucleon transfer to nucleus-nucleus interaction. We obtained the barrier distributions of lead-based fusion reactions of Ti, Cr, Fe, Ni, Zn, Ge, and Kr projectiles on Pb by means of the measurements of the quasi-elastic cross sections at backward scattering angles. The obtained positions and widths of the barrier distributions are compared with a calculation taking account of the channel couplings. The effect of the nuclear deformation on reaction process was also investigated by means of the measurements of product mass distributions for the systems of Si, S, Ar projectiles on U. We found that the collision at polar side gives rise to quasi-fission, where an asymmetric fission is dominant.
Nishio, Katsuhisa; Ikezoe, Hiroshi; Nishinaka, Ichiro; Mitsuoka, Shinichi; Hirose, Kentaro*; Otsuki, Tsutomu*; Watanabe, Yutaka*; Aritomo, Yoshihiro*; Hofmann, S.*
Physical Review C, 82(4), p.044604_1 - 044604_5, 2010/00
Times Cited Count:48 Percentile:91.18(Physics, Nuclear)Nishio, Katsuhisa; Ikezoe, Hiroshi; Mitsuoka, Shinichi; Nishinaka, Ichiro; Makii, Hiroyuki; Watanabe, Yutaka*; Nagame, Yuichiro; Otsuki, Tsutomu*; Hirose, Kentaro*; Hofmann, S.*
AIP Conference Proceedings 1175, p.111 - 118, 2009/10