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Vermeulen, M. J.; Nishio, Katsuhisa; Hirose, Kentaro; Kean, K. R.; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Tsekhanovich, I.*; Andreyev, A. N.; Ishizaki, Shoma*; et al.
Physical Review C, 102(5), p.054610_1 - 054610_11, 2020/11
Times Cited Count:7 Percentile:50.34(Physics, Nuclear)Kean, K. R.; Nishio, Katsuhisa; Hirose, Kentaro; Vermeulen, M. J.; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Andreyev, A. N.; Tsekhanovich, I.*; Chiba, Satoshi*
Physical Review C, 100(1), p.014611_1 - 014611_6, 2019/07
Times Cited Count:4 Percentile:35.47(Physics, Nuclear)Tsekhanovich, I.*; Andreyev, A. N.; Nishio, Katsuhisa; Denis-Petit, D.*; Hirose, Kentaro; Makii, Hiroyuki; Matheson, Z.*; Morimoto, Koji*; Morita, Kosuke*; Nazarewicz, W.*; et al.
Physics Letters B, 790, p.583 - 588, 2019/03
Times Cited Count:44 Percentile:94.72(Astronomy & Astrophysics)Hirose, Kentaro; Nishio, Katsuhisa; Tanaka, Shoya*; Lguillon, R.*; Makii, Hiroyuki; Nishinaka, Ichiro*; Orlandi, R.; Tsukada, Kazuaki; Smallcombe, J.*; Vermeulen, M. J.; et al.
Physical Review Letters, 119(22), p.222501_1 - 222501_6, 2017/12
Times Cited Count:59 Percentile:91.48(Physics, Multidisciplinary)Fission-fragment mass distributions were measured for U,
Np and
Pu populated in the excitation-energy range from 10 to 60 MeV by multi-nucleon transfer channels in the reaction
O +
U at the JAEA tandem facility. Among them, the data for
U and
Np were observed for the first time. It was found that the mass distributions for all the studied nuclides maintain a double-humped shape up to the highest measured energy in contrast to expectations of predominantly symmetric fission due to the washing out of nuclear shell effects. From a comparison with the dynamical calculation based on the fluctuation-dissipation model, this behavior of the mass distributions was unambiguously attributed to the effect of multi-chance fission.
Nishio, Katsuhisa; Hirose, Kentaro; Vermeulen, M. J.; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Sato, Tetsuya; Nagame, Yuichiro; et al.
EPJ Web of Conferences, 163, p.00041_1 - 00041_6, 2017/11
Times Cited Count:1 Percentile:58.26(Nuclear Science & Technology)Hirose, Kentaro; Nishio, Katsuhisa; Makii, Hiroyuki; Nishinaka, Ichiro*; Ota, Shuya*; Nagayama, Tatsuro*; Tamura, Nobuyuki*; Goto, Shinichi*; Andreyev, A. N.; Vermeulen, M. J.; et al.
Nuclear Instruments and Methods in Physics Research A, 856, p.133 - 138, 2017/06
Times Cited Count:5 Percentile:39.65(Instruments & Instrumentation)Bottoni, S.*; Leoni, S.*; Fornal, B.*; Raabe, R.*; Rusek, K.*; Benzoni, G.*; Bracco, A.*; Crespi, F. C. L.*; Morales, A. I.*; Bednarczyk, P.*; et al.
Physical Review C, 92(2), p.024322_1 - 024322_8, 2015/08
Times Cited Count:23 Percentile:79.18(Physics, Nuclear)Illana, A.*; Jungclaus, A.*; Orlandi, R.; Perea, A.*; Bauer, C.*; Briz, J. A.*; Egido, J. L.*; Gernhuser, R.*; Leske, J.*; M
cher, D.*; et al.
Physical Review C, 89(5), p.054316_1 - 054316_11, 2014/05
Times Cited Count:11 Percentile:58.21(Physics, Nuclear)Shimada, Kenji*; Ueno, Hideki*; Neyens, G.*; Asahi, Koichiro*; Balabanski, D. L.*; Daugas, J. M.*; Depuydt, M.*; De Rydt, M.*; Gaudefroy, L.*; Grvy, S.*; et al.
Physics Letters B, 714(2-5), p.246 - 250, 2012/08
Times Cited Count:7 Percentile:39.92(Astronomy & Astrophysics)no abstracts in English
De Rydt, M.*; Neyens, G.*; Asahi, Koichiro*; Balabanski, D. L.*; Daugas, J. M.*; Depuydt, M.*; Gaudefroy, L.*; Grvy, S.*; Hasama, Yuka*; Ichikawa, Yuichi*; et al.
Physics Letters B, 678(4), p.344 - 349, 2009/07
Times Cited Count:17 Percentile:68.93(Astronomy & Astrophysics)no abstracts in English
Himpe, P.*; Neyens, G.*; Balabanski, D. L.*; Blier, G.*; Daugas, J. M.*; de Oliveira Santos, F.*; De Rydt, M.*; Flanagan, K. T.*; Matea, I.*; Morel, P.*; et al.
Physics Letters B, 658(5), p.203 - 208, 2008/01
Times Cited Count:44 Percentile:88.47(Astronomy & Astrophysics)An exotic nucleus Al was produced at GANIL, and its absolute value of the
factor was measured for the first time. Based on the value and the
decay branching, the ground state of
Al is most liekly to be
. By comparing the shell model calculation for the
factor, it turns out that the ground state of
Al cannot be described unless a significant excitation from the
to
shells is taken into account. Thus, the nucleus belongs to the so-called "island of inversion." We performed the Monte Carlo shell model calculation, showing that this
factor is sensitive not only to the
gap but also the
gap.
Neyens, G.*; Kowalska, M.*; Yordanov, D.*; Blaum, K.*; Himpe, P.*; Lievens, P.*; Mallion, S.*; Neugart, R.*; Vermeulen, N.*; Utsuno, Yutaka; et al.
Physical Review Letters, 94(2), p.022501_1 - 022501_4, 2005/01
Times Cited Count:161 Percentile:95.91(Physics, Multidisciplinary)no abstracts in English
Orlandi, R.; Makii, Hiroyuki; Nishio, Katsuhisa; Hirose, Kentaro; Tsukada, Kazuaki; Asai, Masato; Nagame, Yuichiro; Sato, Tetsuya; Toyoshima, Atsushi; Vermeulen, M. J.; et al.
no journal, ,
Hirose, Kentaro; Nishio, Katsuhisa; Leguillon, R.*; Vermeulen, M.*; Ratha, K. K.*; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Asai, Masato; Sato, Tetsuya; et al.
no journal, ,
no abstracts in English
Tamura, Nobuyuki; Nishio, Katsuhisa; Hirose, Kentaro; Nishinaka, Ichiro; Makii, Hiroyuki; Kimura, Atsushi; Ota, Shuya*; Andreyev, A. N.; Vermeulen, M.*; Gillespire, S.*; et al.
no journal, ,
no abstracts in English
Makii, Hiroyuki; Nishio, Katsuhisa; Hirose, Kentaro; Orlandi, R.; Yan, S. Q.*; Lguillon, R.; Smallcombe, J.*; Vermeulen, M. J.; Nishinaka, Ichiro*; Tsukada, Kazuaki; et al.
no journal, ,
A project of the fission data measurement as well as the measurement of the neutron capture cross sections, using a surrogate method based on multi-nucleon transfer reactions, is running at JAEA. We have constructed appatus consists of a fission setup including four position-sensitive multi-wire proportional counters (MWPCs) to detect fission fragments and a capture setup containing two anti-Compton LaBr(Ce) spectrometers to measure the
rays from the populated compound nuclei. Both setups contain a Si
E-E detector to detect outgoing projectile-like particles by which we can identify the populated compound nuclei. We also placed 33 scintillators around the fission setup to detect fission neutrons in coincidence with the fission fragments. The measurements was carried out at the JAEA-Tokai tandem accelerator facility. In this contribution, we will present our results on neutron-induced fission and neutron capture cross sections by using the surrogate method.
Asai, Masato; Tsukada, Kazuaki; Hirose, Kentaro; Toyoshima, Atsushi*; Tomitsuka, Tomohiro*; Chiera, N. M.*; Ito, Yuta; Makii, Hiroyuki; Nagame, Yuichiro*; Nishio, Katsuhisa; et al.
no journal, ,
Neutron-rich fermium isotopes Fm and
Fm and lawrencium isotope
Lr were produced in the multinucleon transfer reaction on
Es target with heavy-ion beam and in the heavy-ion fusion reaction on
Cm target with
N beam, respectively. Reaction products were mass-separated with an on-line isotope separator (ISOL), and spontaneous fission (SF) of these isotopes were measured. It was found that the mass distribution of the SF of
Fm was asymmetric, while that of
Fm was sharp symmetric, which confirmed the previous experimental results. On the other hand, the SF of
Lr seemed to contain both symmetric and asymmetric mass distributions. On the basis of the present results of the mass and total kinetic energy distributions, we discussed the mechanism of fission for these isotopes.
Nishio, Katsuhisa; Hirose, Kentaro; Makii, Hiroyuki; Orlandi, R.; Tsukada, Kazuaki; Vermeulen, M. J.; Andreyev, A. N.; Chiba, Satoshi; Tsekhanovich, I.*; Otsuki, Tsutomu*
no journal, ,
Asai, Masato; Tsukada, Kazuaki; Hirose, Kentaro; Toyoshima, Atsushi; Tomitsuka, Tomohiro; Chiera, N. M.; Ito, Yuta; Makii, Hiroyuki; Nagame, Yuichiro; Nishio, Katsuhisa; et al.
no journal, ,
Spontaneous fissions of Fm,
Fm, and
Lr have been measured using an
Es target at the JAEA Tandem Accelerator Facility. These three nuclei show different fission properties: the asymmetric fission, the high total-kinetic-energy (TKE) symmetric fission, and the low TKE symmetric fission, and the mechanisms of these three fissions should be very different. It is of great interest to elucidate how these differences occur. We have produced
Fm in multinucleon-transfer reactions with a
Es target and
O projectiles, and produced
Lr in the
Cm(
N,4n) fusion-evaporation reaction. The reaction products were mass-separated with a gas-jet-coupled on-line isotope separator, and were delivered into a rotating wheel alpha- and fission-fragment detection system. By comparing the mass and TKE distributions deduced from the present experimental data, we will discuss the differences in fission mechanism among
Fm,
Fm, and
Lr.
Hirose, Kentaro; Nishio, Katsuhisa; Tanaka, Shoya*; Leguillon, R.*; Makii, Hiroyuki; Nishinaka, Ichiro*; Orlandi, R.; Tsukada, Kazuaki; Smallcombe, J.*; Vermeulen, M. J.*; et al.
no journal, ,