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Orlandi, R.; Makii, Hiroyuki; Nishio, Katsuhisa; Hirose, Kentaro; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Ito, Yuta; Suzaki, Fumi; Nagame, Yuichiro*; et al.
Physical Review C, 106(6), p.064301_1 - 064301_11, 2022/12
Times Cited Count:0 Percentile:0.02(Physics, Nuclear)Ideguchi, Eiji*; Kibdi, T.*; Dowie, J. T. H.*; Hoang, T. H.*; Kumar Raju, M.*; Aoi, Nori*; Mitchell, A. J.*; Stuchbery, A. E.*; Shimizu, Noritaka*; Utsuno, Yutaka; et al.
Physical Review Letters, 128(25), p.252501_1 - 252501_6, 2022/06
Times Cited Count:1 Percentile:52.46(Physics, Multidisciplinary)no abstracts in English
Go, Shintaro*; Ideguchi, Eiji*; Yokoyama, Rin*; Aoi, Nori*; Azaiez, F.*; Furutaka, Kazuyoshi; Hatsukawa, Yuichi; Kimura, Atsushi; Kisamori, Keiichi*; Kobayashi, Motoki*; et al.
Physical Review C, 103(3), p.034327_1 - 034327_8, 2021/03
Times Cited Count:4 Percentile:61.99(Physics, Nuclear)Laskar, Md. S. R.*; Palit, R.*; Mishra, S. N.*; Shimizu, Noritaka*; Utsuno, Yutaka; Ideguchi, Eiji*; Garg, U.*; Biswas, S.*; Babra, F. S.*; Gala, R.*; et al.
Physical Review C, 101(3), p.034315_1 - 034315_8, 2020/03
Times Cited Count:4 Percentile:44.36(Physics, Nuclear)no abstracts in English
Laskar, Md. S. R.*; Saha, S.*; Palit, R.*; Mishra, S. N.*; Shimizu, Noritaka*; Utsuno, Yutaka; Ideguchi, Eiji*; Naik, Z.*; Babra, F. S.*; Biswas, S.*; et al.
Physical Review C, 99(1), p.014308_1 - 014308_6, 2019/01
Times Cited Count:6 Percentile:60.44(Physics, Nuclear)no abstracts in English
Momiyama, Satoru*; Doornenbal, P.*; Scheit, H.*; Takeuchi, Satoshi*; Niikura, Megumi*; Aoi, Nori*; Li, K.*; Matsushita, Masafumi*; Steppenbeck, D.*; Wang, H.*; et al.
Physical Review C, 96(3), p.034328_1 - 034328_8, 2017/09
Times Cited Count:6 Percentile:50.36(Physics, Nuclear)no abstracts in English
Doornenbal, P.*; Scheit, H.*; Takeuchi, Satoshi*; Utsuno, Yutaka; Aoi, Nori*; Li, K.*; Matsushita, Masafumi*; Steppenbeck, D.*; Wang, H.*; Baba, Hidetada*; et al.
Physical Review C, 95(4), p.041301_1 - 041301_5, 2017/04
Times Cited Count:28 Percentile:91.58(Physics, Nuclear)no abstracts in English
Liu, H. N.*; Lee, J.*; Doornenbal, P.*; Scheit, H.*; Takeuchi, Satoshi*; Aoi, Nori*; Li, K. A.*; Matsushita, Masafumi*; Steppenbeck, D.*; Wang, H.*; et al.
Physics Letters B, 767, p.58 - 62, 2017/04
Times Cited Count:19 Percentile:84.58(Astronomy & Astrophysics)no abstracts in English
Lee, J.*; Liu, H.*; Doornenbal, P.*; Kimura, Masaaki*; Minomo, Kosho*; Ogata, Kazuyuki*; Utsuno, Yutaka; Aoi, Nori*; Li, K.*; Matsushita, Masafumi*; et al.
Progress of Theoretical and Experimental Physics (Internet), 2016(8), p.083D01_1 - 083D01_7, 2016/08
Times Cited Count:6 Percentile:46.72(Physics, Multidisciplinary)no abstracts in English
Kaji, Daiya*; Morimoto, Koji*; Haba, Hiromitsu*; Ideguchi, Eiji*; Koura, Hiroyuki; Morita, Kosuke*
Journal of the Physical Society of Japan, 85(1), p.015002_1 - 015002_2, 2016/01
Times Cited Count:9 Percentile:57.42(Physics, Multidisciplinary)A neutron deficient berkelium isotope of Bk produced via the
Au(
Ar, 3n) reaction and the daughter product of
Am were newly identified. Alpha-decay energies of eleven
Bk were found in 7.62 - 7.96 MeV, and six fission events correlated with
-decay of
Bk were observed. The half-lives of
Bk and
Am were determined to be 19
s and 32
s, respectively. The
Cm followed by
-decay of
Bk was also identified.
Go, Shintaro*; Ideguchi, Eiji*; Yokoyama, Rin*; Kobayashi, Motoki*; Kisamori, Keiichi*; Takaki, Motonobu*; Miya, Hiroyuki*; Ota, Shinsuke*; Michimasa, Shinichiro*; Shimoura, Susumu*; et al.
JPS Conference Proceedings (Internet), 6, p.030005_1 - 030005_4, 2015/06
Doornenbal, P.*; Scheit, H.*; Takeuchi, Satoshi*; Utsuno, Yutaka; Aoi, Nori*; Li, K.*; Matsushita, Masafumi*; Steppenbeck, D.*; Wang, H.*; Baba, Hidetada*; et al.
Progress of Theoretical and Experimental Physics (Internet), 2014(5), p.053D01_1 - 053D01_9, 2014/05
Times Cited Count:12 Percentile:63.56(Physics, Multidisciplinary)no abstracts in English
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:157 Percentile:97.26(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.
Ideguchi, Eiji*; Ota, Shinsuke*; Morikawa, Tsuneyasu*; Oshima, Masumi; Koizumi, Mitsuo; Toh, Yosuke; Kimura, Atsushi; Harada, Hideo; Furutaka, Kazuyoshi; Nakamura, Shoji; et al.
Progress of Theoretical Physics Supplement, (196), p.427 - 432, 2012/10
Sato, Nozomi; Haba, Hiromitsu*; Ichikawa, Takatoshi*; Kaji, Daiya*; Kudo, Yuki*; Morimoto, Koji*; Morita, Kosuke*; Ozeki, Kazutaka*; Sumita, Takayuki*; Yoneda, Akira*; et al.
Journal of the Physical Society of Japan, 80(9), p.094201_1 - 094201_7, 2011/09
Times Cited Count:15 Percentile:64.53(Physics, Multidisciplinary)Decay properties of Hs and
Hs produced in the
Pb(
Fe,
) [
=1, 2] reactions were studied using a gas-filled recoil ion separator at the linear accelerator facility of RIKEN. A total of 6 decay chains were assigned to
Hs. Cross sections for the
Hs production in the
Pb(
Fe,
) and
Pb(
Fe,
) reactions were measured to be
pb and
pb, respectively. The isotope
Hs decayed with a half-life of
ms by
-particle emission and spontaneous fission. The
-particle energy of
Hs was observed at 10.61
0.04 and 10.80
0.08 MeV. The spontaneous fission branch of
Hs was found to be
.
Ideguchi, Eiji*; Ota, Shinsuke*; Morikawa, Tsuneyasu*; Oshima, Masumi; Koizumi, Mitsuo; Toh, Yosuke; Kimura, Atsushi; Harada, Hideo; Furutaka, Kazuyoshi; Nakamura, Shoji; et al.
Physics Letters B, 686(1), p.18 - 22, 2010/03
Times Cited Count:32 Percentile:85.57(Astronomy & Astrophysics)A rotational band with five -ray transitions ranging from 2
to 12
states was identified in
Ar. The deduced transition quadrupole moment of 1.45
0.15 eb indicates that the band has a superdeformed shape. The nature of the band is revealed by cranked Hartee Fock Bogoliubov calculations and a multiparticle-multihole configuration is assigned to the band.
Morita, Kosuke*; Morimoto, Koji*; Kaji, Daiya*; Haba, Hiromitsu*; Ozeki, Kazutaka*; Kudo, Yuki*; Sato, Nozomi*; Sumita, Takayuki*; Yoneda, Akira*; Ichikawa, Takatoshi*; et al.
Journal of the Physical Society of Japan, 78(6), p.064201_1 - 064201_6, 2009/06
Times Cited Count:30 Percentile:78.96(Physics, Multidisciplinary)Decay properties of an isotope Bh and its daughter nucleus
Db produced by the
Cm(
Na,5
) reaction were studied by using a gas-filled recoil separator coupled with a position-sensitive semiconductor detector.
Bh was clearly identified from the correlation of the known nuclide,
Db. The obtained decay properties of
Bh and
Db are consistent with those observed in the
113 chain, which provided further confirmation of the discovery of
113.
Kaji, Daiya*; Morimoto, Koji*; Sato, Nozomi*; Ichikawa, Takatoshi*; Ideguchi, Eiji*; Ozeki, Kazutaka*; Haba, Hiromitsu*; Koura, Hiroyuki; Kudo, Yuki*; Ozawa, Akira*; et al.
Journal of the Physical Society of Japan, 78(3), p.035003_1 - 035003_2, 2009/03
A new hassium isotopes Hs is directly produced for the first time. The experiment was performed at the linear accelerator (RILAC) facility in RIKEN (the Institute of Physical and Chemical Research) from Jun. 19 to 25. In the 25-h irradiation of
Fe on
Pb and 46-h irradiation of
Fe on
Pb, 8 decay chains and 1 decay chain, respectively, were observed. All decay chains were assigned to subsequent decays from
Hs. The half-life of
Hs is 0.60
ms. In this experiment, the total beam dose was
ions for
Fe and
ions for
Fe. The production cross section corresponding to 8 decay events and 1 decay chain was deduced to be 21
pb and 1.6
pb by assuming that the transmission of the system is 80%.
Kaji, Daiya*; Morimoto, Koji*; Sato, Nozomi*; Ichikawa, Takatoshi*; Ideguchi, Eiji*; Ozeki, Kazutaka*; Haba, Hiromitsu*; Koura, Hiroyuki; Kudo, Yuki*; Ozawa, Akira*; et al.
Journal of the Physical Society of Japan, 78(3), p.035003_1 - 035003_2, 2009/03
Times Cited Count:3 Percentile:26.75(Physics, Multidisciplinary)A new neutron deficient hassium (=108) isotope of
Hs was identified via two different reactions of
Pb(
Fe,n) and
Pb(
Fe,n) by using a gas-filled recoil separator GARIS at June 2008. During the 25-h irradiation of
Pb with the
Fe beam and 46-h irradiation of
Pb with the
Fe beam, 8 decay chains and 1 decay chain, respectively, have been observed. The half-life of
Hs is 0.60
ms. In this experiment, the total beam doses of the Fe and
Fe was 4.1
10
ions and 6.2
10
ions, respectively. The production cross sections corresponding to the 8 decay chains and 1 decay chain have been deduced to be 21
pb and 1.6
pb by assuming the transmission of the system to be 80%.
Sato, Nozomi*; Haba, Hiromitsu*; Ichikawa, Takatoshi*; Ideguchi, Eiji*; Kaji, Daiya*; Koura, Hiroyuki; Kudo, Yuki*; Morimoto, Koji*; Morita, Kosuke*; Ozawa, Akira*; et al.
RIKEN Accelerator Progress Report, Vol.42, P. 16, 2009/00
New Decay Properties of Hs and its
-decay daughter nuclei were studied by using reactions of
Pb(
Fe,2n) and
Pb(
Fe,n) by using a gas-filled recoil ion separator, GARIS at RIKEN. We observed three correlated events in irradiation of
Fe on
Pb, and eight events in irradiation of
Fe on
Pb. A half-life was deduced to be 0.90
. We assigned these eleven events to be the decays of
Hs. We found different decay-chain events of
Hs from a previous report. One is a long-lived
-decay of
Sg with 180
ms of half-life. Another is a long-lived
-decay of
Rf with 10.4
s of half-life. For
Sg and
Rf, the decay of such a long-lived state have not been reported. These are the first observations of isomerism in
Sg and
Rf.