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Journal Articles

Possible antimagnetic rotation band and neutron alignment in $$^{101}$$Pd

Sugawara, Masahiko*; Hayakawa, Takehito; Oshima, Masumi*; Toh, Yosuke; Osa, Akihiko; Matsuda, Makoto; Shizuma, Toshiyuki; Hatsukawa, Yuichi; Kusakari, Hideshige*; Morikawa, Tsuneyasu*; et al.

Physical Review C, 86(3), p.034326_1 - 034326_11, 2012/09

 Times Cited Count:14 Percentile:29.98(Physics, Nuclear)

High spin states of $$^{101}$$Pd have been studied through in-beam $$gamma$$-ray spectroscopy by using the reaction $$^{68}$$Zn ($$^{37}$$Cl, 1$$p$$3$$n$$). The band based on the $$h$$$$_{11/2}$$ neutron orbital has been extended to higher-spin states, and the band based on the $$d$$$$_{5/2}$$ neutron orbital has been somewhat revised. Many transitions decaying to these bands have been observed and consequently, several side bands have been established. Electric dipole transitions from the $$h$$$$_{11/2}$$ band to the $$d$$$$_{5/2}$$ band have been also observed. The structure of the $$h$$$$_{11/2}$$ band was discussed from the viewpoint of "antimagnetic rotation" based on a semiclassical particle plus rotor model taking neutron alignments into account.

Journal Articles

Coulomb excitation experiments at JAEA Tandem facility for the study of nuclear structure

Koizumi, Mitsuo; Toh, Yosuke; Osa, Akihiko; Kimura, Atsushi; Utsuno, Yutaka; Oshima, Masumi; Hayakawa, Takehito; Hatsukawa, Yuichi; Katakura, Junichi; Matsuda, Makoto; et al.

Proceedings of the International Workshop on Quark Nuclear Physics 2006, p.245 - 252, 2006/00

no abstracts in English

Journal Articles

Shape coexistence in even-even mo isotopes studied via coulomb excitation

Zieli$'n$ska, M.*; Czosnyka, T.*; Wrzosek-Lipska, K.*; Choi$'n$ski, J.*; Hatsukawa, Yuichi; Iwanicki, J.*; Koizumi, Mitsuo; Kusakari, Hideshige*; Matsuda, Makoto; Morikawa, Tsuneyasu*; et al.

Acta Physica Polonica B, 36(4), p.1289 - 1292, 2005/04

The nuclei $$^{96}$$Mo and $$^{100}$$Mo have been Coulomb excited using various combinations of beams and targets. The investigation of the eletromagnetic structure of these isotopes provides an experimental background for a theoretical description of the shape coexistence observed in the previously studied $$^{98}$$Mo isotope.

Journal Articles

Multiple coulomb excitation experiment of $$^{68}$$Zn

Koizumi, Mitsuo; Seki, Akiyuki*; Toh, Yosuke; Osa, Akihiko; Utsuno, Yutaka; Kimura, Atsushi; Oshima, Masumi; Hayakawa, Takehito; Hatsukawa, Yuichi; Katakura, Junichi; et al.

Nuclear Physics A, 730(1-2), p.46 - 58, 2004/01

 Times Cited Count:11 Percentile:39.65(Physics, Nuclear)

Coulomb excitation experiment was carried out with a $$^{68}$$Zn beam bombarding a $$^{nat}$$Pb target. Two $$E2$$ matrix elements and the quadrupole moment of the 2$$_{1}$$$$^{+}$$ state were newly derived with the least-squares search code GOSIA. The potential energy surface (PES) was calculated with the Nilsson-Strutinsky model, showing two shallow minima: the first minimum does not contain the $$1g_{9/2}$$ orbit below the Fermi surface, while the second minimum does. The ground state band and the intruder band seem to be constructed on the first and the second minimum, respectively. As for the ground state band, the asymmetric rotor model and the IBM in O(6) limit reproduced the experimental values rather well. The shallow PES may suggest unstability of the shape. The ground state band structure may be explained assuming a soft triaxial deformation.

Journal Articles

Multiple Coulomb Excitation Experiment of $$^{66}$$Zn

Koizumi, Mitsuo; Seki, Akiyuki*; Toh, Yosuke; Oshima, Masumi; Osa, Akihiko; Kimura, Atsushi; Hatsukawa, Yuichi; Shizuma, Toshiyuki; Hayakawa, Takehito; Matsuda, Makoto; et al.

European Physical Journal A, 18(1), p.87 - 92, 2003/10

 Times Cited Count:11 Percentile:38.08(Physics, Nuclear)

no abstracts in English

Journal Articles

Projectile Coulomb excitation of $$^{78}$$Se

Hayakawa, Takehito; Toh, Yosuke; Oshima, Masumi; Osa, Akihiko; Koizumi, Mitsuo; Hatsukawa, Yuichi; Utsuno, Yutaka; Katakura, Junichi; Matsuda, Makoto; Morikawa, Tsuneyasu*; et al.

Physical Review C, 67(6), p.064310_1 - 064310_6, 2003/06

 Times Cited Count:11 Percentile:38.08(Physics, Nuclear)

no abstracts in English

Journal Articles

First measurement of the quadrupole moment in the 2$$_1^+$$ state of $$^{84}$$Kr

Osa, Akihiko; Czosnyka, T.*; Utsuno, Yutaka; Mizusaki, Takahiro*; Toh, Yosuke; Oshima, Masumi; Koizumi, Mitsuo; Hatsukawa, Yuichi; Katakura, Junichi; Hayakawa, Takehito; et al.

Physics Letters B, 546(1-2), p.48 - 54, 2002/10

 Times Cited Count:9 Percentile:48.13

A $$^{84}$$Kr beam was Coulomb-excited on a $$^{98}$$Mo target and a $$^{nat}$$Ta target. Six reduced matrix elements for 5 low-lying states were derived from the analysis using the least-squares code GOSIA. The quadrupole moment of the 2$$_1^+$$ was newly obtained. The measured quadrupole moment and the $$B(E2)$$ values are consistent with large-scale shell-model calculations which give a systematic description of $$N$$,=,50 isotones.

Journal Articles

Multiple Coulomb excitation of a $$^{76}$$Ge beam

Toh, Yosuke; Czosnyka, T.*; Oshima, Masumi; Hayakawa, Takehito; Kusakari, Hideshige*; Sugawara, Masahiko*; Osa, Akihiko; Koizumi, Mitsuo; Hatsukawa, Yuichi; Katakura, Junichi; et al.

Journal of Physics G; Nuclear and Particle Physics, 27(7), p.1475 - 1480, 2001/07

 Times Cited Count:25 Percentile:18.93(Physics, Nuclear)

no abstracts in English

Journal Articles

Coulomb excitation of $$^{74}$$Ge beam

Toh, Yosuke; Czosnyka, T.*; Oshima, Masumi; Hayakawa, Takehito; Kusakari, Hideshige*; Sugawara, Masahiko*; Hatsukawa, Yuichi; Katakura, Junichi; Shinohara, Nobuo; Matsuda, Makoto

European Physical Journal A, 9(3), p.353 - 356, 2000/11

 Times Cited Count:41 Percentile:12.33(Physics, Nuclear)

no abstracts in English

Oral presentation

Nuclear structure study with Coulomb excitation experiments

Koizumi, Mitsuo; Toh, Yosuke; Oshima, Masumi; Osa, Akihiko; Kimura, Atsushi; Hatsukawa, Yuichi; Sugawara, Masahiko*; Morikawa, Tsuneyasu*; Kusakari, Hideshige*; Czosnyka, T.*; et al.

no journal, , 

no abstracts in English

10 (Records 1-10 displayed on this page)
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