JOPSS - Search Results

Journal Articles

Proton-neutron configurations in $^{236g,m}$ Am and its EC-decay daughter $^{236}$ Pu

Asai, Masato; Sakama, Minoru*; Tsukada, Kazuaki; Ichikawa, Shinichi; Haba, Hiromitsu*; Nishinaka, Ichiro; Nagame, Yuichiro; Goto, Shinichi*; Kojima, Yasuaki*; Oura, Yasuji*; et al.

European Physical Journal A, 23(3), p.395 - 400, 2005/02

https://doi.org/10.1140/epja/i2004-10096-6

Times Cited Count：16 Percentile：71.27(Physics, Nuclear)

The EC decay of $^{236}$ Am has been studied through -ray spectroscopy. Two EC-decaying states have been found in $^{236}$ Am with half-lives of 3.6 min and 2.9 min. In $^{236}$ Pu, we have found the $K^{pi}=0^{-}$ octupole band and two-quasiparticle states one of which is a isomer with a 1.2 s half-life. The EC transitions from $^{236g,m}$ Am to the two-quasiparticle states in $^{236}$ Pu show small values of 4.8--5.3, which allowed us to assign proton-neutron configurations of $^{236g,m}$ Am and the two-quasiparticle states.

Journal Articles

EC and decays of $^{235}$ Am

Asai, Masato; Sakama, Minoru*; Tsukada, Kazuaki; Ichikawa, Shinichi; Haba, Hiromitsu*; Nishinaka, Ichiro; Nagame, Yuichiro; Goto, Shinichi*; Kojima, Yasuaki*; Oura, Yasuji*; et al.

European Physical Journal A, 22(3), p.411 - 416, 2004/12

https://doi.org/10.1140/epja/i2004-10044-6

Times Cited Count：9 Percentile：51.36(Physics, Nuclear)

EC and decays of $^{235}$ Am have been studied by means of -ray spectroscopy. Excited states in $^{235}$ Pu have been established for the first time, and tentative spin-parity and Nilsson assignments were given to these levels. The ground state of $^{235}$ Am was evaluated to be the $pi 5/2^{-}[523]$ state from the experimental results. It was found that the $pi 5/2^{-}[523]$ state in $^{231}$ Np is located at 15~keV, which allowed us to determine the $Q_{alpha}$ value of $^{235}$ Am as 6569 $^{+27}_{-12}$ ~keV, in combination with the measured -particle energy.

Journal Articles

-decays of neutron-deficient americium isotopes

Sakama, Minoru*; Asai, Masato; Tsukada, Kazuaki; Ichikawa, Shinichi; Nishinaka, Ichiro; Nagame, Yuichiro; Haba, Hiromitsu*; Goto, Shinichi*; Shibata, Michihiro*; Kawade, Kiyoshi*; et al.

Physical Review C, 69(1), p.014308_1 - 014308_11, 2004/01

https://doi.org/10.1103/PhysRevC.69.014308

Times Cited Count：21 Percentile：73.68(Physics, Nuclear)

no abstracts in English

Journal Articles

Nuclear decay properties of the neutron-deficient actinides

Sakama, Minoru*; Tsukada, Kazuaki; Asai, Masato; Ichikawa, Shinichi; Haba, Hiromitsu; Goto, Shinichi*; Nishinaka, Ichiro; Nagame, Yuichiro; Oura, Yasuji*; Kojima, Yasuaki*; et al.

Journal of Nuclear Science and Technology, 39(Suppl.3), p.34 - 37, 2002/11

http://www.tandfonline.com/doi/abs/10.1080/00223131.2002.10875403

no abstracts in English

Journal Articles

Measurements of EC and weak decays of neutron-deficient transuranium isotopes

Asai, Masato; Sakama, Minoru; Tsukada, Kazuaki; Ichikawa, Shinichi; Haba, Hiromitsu; Nishinaka, Ichiro; Nagame, Yuichiro; Goto, Shinichi; Kojima, Yasuaki*; Oura, Yasuji*; et al.

Journal of Nuclear Science and Technology, 39(Suppl.2), p.474 - 477, 2002/08

http://wwwndc.jaea.go.jp/nd2001/proc/pdf/1_0474.pdf

Neutron-deficient americium and curium isotopes with half-lives 10 min have been produced with the tandem accelerator, and their EC and weak decays have been successfully measured through an on-line isotope separation. Decay schemes of $^{235,236}$ Am have been established, and proton-neutron configurations in the parent and daughter nuclei have been determined. Observed transitions in $^{233,235}$ Am were found to be the favored transitions between the $pi 5/2^{-}[523]$ Nilsson states. Information on nuclear structure, deformation, and atomic masses in this region were obtained.

Journal Articles

Decay studies of neutron-deficient Am, Cm, and Bk nuclei using an on-line isotope separator

Asai, Masato; Sakama, Minoru*; Tsukada, Kazuaki; Ichikawa, Shinichi; Haba, Hiromitsu; Nishinaka, Ichiro; Nagame, Yuichiro; Goto, Shinichi*; Akiyama, Kazuhiko; Toyoshima, Atsushi; et al.

Journal of Nuclear and Radiochemical Sciences, 3(1), p.187 - 190, 2002/06

https://doi.org/10.14494/jnrs2000.3.187

EC and decays of neutron-deficient americium, curium, and berkelium nuclei have been studied using the JAERI on-line isotope separator. Decay schemes of $^{235, 236}$ Am have been established for the first time, and proton-neutron configurations in $^{235, 236}$ Am and $^{235, 236}$ Pu have been determined. transitions observed in $^{233, 235}$ Am were found to be the favored transitions between the $pi 5/2^{-}[523]$ Nilsson states. $Q_{alpha}$ values of $^{237, 238}$ Cm have been determined. Nuclear structure, deformation, and atomic masses for these nuclei were discussed.

Journal Articles

New isotope $^{233}$ Am

Sakama, Minoru*; Tsukada, Kazuaki; Asai, Masato; Ichikawa, Shinichi; Haba, Hiromitsu; Goto, Shinichi*; Oura, Yasuji*; Nishinaka, Ichiro; Nagame, Yuichiro; Shibata, Michihiro*; et al.

European Physical Journal A, 9(3), p.303 - 306, 2000/11

https://doi.org/10.1007/s100500070013

Times Cited Count：17 Percentile：66.14(Physics, Nuclear)

no abstracts in English

Journal Articles

Spectroscopic studies of mass-separated heavy nuclei

Asai, Masato; Sakama, Minoru*; Tsukada, Kazuaki; Ichikawa, Shinichi; Haba, Hiromitsu; Nishinaka, Ichiro; Nagame, Yuichiro; Goto, Shinichi*; Kojima, Yasuaki*; Oura, Yasuji*; et al.

AIP Conference Proceedings 561, p.358 - 367, 2000/09

https://doi.org/10.1063/1.1372812

no abstracts in English

Journal Articles

Half-life of the electron capture decaying isotope $^{236}$ Am

Tsukada, Kazuaki; Ichikawa, Shinichi; Hatsukawa, Yuichi; Nishinaka, Ichiro; ; Nagame, Yuichiro; Oura, Yasutsugu*; *; Sueki, Keisuke*; *; et al.

Physical Review C, 57(4), p.2057 - 2060, 1998/04

https://doi.org/10.1103/PhysRevC.57.2057

Times Cited Count：15 Percentile：64.05(Physics, Nuclear)

no abstracts in English

Journal Articles

Relativistic effects in transverse flow in the molecular dynamics framework

Maruyama, Tomoyuki*; Niita, Koji*; Maruyama, Toshiki; Chiba, Satoshi; Nakahara, Yasuaki; Iwamoto, Akira

Progress of Theoretical Physics, 96(1), p.263 - 268, 1996/07

https://doi.org/10.1143/PTP.96.263

Times Cited Count：22 Percentile：83.83(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Analysis of the (N,xN') reactions by quantum molecular dynamics plus statistical decay model

Niita, Koji*; Chiba, Satoshi; Maruyama, Toshiki; Maruyama, Tomoyuki*; Takada, Hiroshi; Fukahori, Tokio; Nakahara, Yasuaki; Iwamoto, Akira

Physical Review C, 52(5), p.2620 - 2635, 1995/11

https://doi.org/10.1103/PhysRevC.52.2620

Times Cited Count：346 Percentile：99.52(Physics, Nuclear)

no abstracts in English

Journal Articles

Present status of research on intermediate energy nuclear data

Fukahori, Tokio; Chiba, Satoshi; Takada, Hiroshi; Nakahara, Yasuaki; Watanabe, Yukinobu*

Nihon Genshiryoku Gakkai-Shi, 37(4), p.264 - 273, 1995/00

https://doi.org/10.3327/jaesj.37.264

Times Cited Count：0 Percentile：2.38(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Benchmark calculation for double differential cross section of (p,xn) and (p,xp) reactions

Takada, Hiroshi; *; Yoshizawa, Nobuaki*; Nakahara, Yasuaki

Journal of Nuclear Science and Technology, 31(1), p.80 - 82, 1994/01

https://doi.org/10.3327/jnst.31.80

Times Cited Count：1 Percentile：26.96(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Microscopic cross section calculations with NUCLEUS and HETC-3STEP

Takada, Hiroshi; Nakahara, Yasuaki; ; *; Yoshizawa, Nobuaki*

Proc. of NEA/NSC Specialists Meeting on Intermediate Energy Nuclear Data:Models and Codes, 0, p.121 - 136, 1994/00

no abstracts in English

JAEA Reports

High intensity proton accelerator program

Kaneko, Yoshihiko; Mizumoto, Motoharu; ; Nakahara, Yasuaki; Iwamoto, Akira; Funahashi, Satoru; ; Takeda, Tatsuoki; Hoshi, Michio; Shinohara, Nobuo; et al.

JAERI-M 91-095, 137 Pages, 1991/06

JAERI-M-91-095.pdf:4.2MB