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Journal Articles

Determination of the change of nulcear charge radias in the 81keV transition of $$^{133}$$Cs by implantation

*; *; *; *; *; *; Koizumi, Mitsuo; Osa, Akihiko; Sekine, Toshiaki; *; et al.

KURRI-TR, 0, p.102 - 106, 1996/02

no abstracts in English

Journal Articles

Moessbauer and conversion-electron measurements of $$^{133}$$Xe-implanted sources for the determination of the change of nuclear charge radius in the 81keV transition of $$^{133}$$Cs

*; *; *; Miura, Taichi*; Koizumi, Mitsuo; Osa, Akihiko; Sekine, Toshiaki; *; *; *; et al.

Hyperfine Interactions (C), p.396 - 399, 1996/01

no abstracts in English

Journal Articles

Gamma-gamma angular correlation measurements at TIARA-ISOL

Asai, Masato*; *; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; *; Yamamoto, Hiroshi*; Kawade, Kiyoshi*

KURRI-KR-3, 0, p.36 - 40, 1996/00

no abstracts in English

Journal Articles

Low-spin level structure of $$^{126}$$Ba investigated by $$gamma$$-$$gamma$$ angular correlation measurement

Asai, Masato*; *; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; *; Yamamoto, Hiroshi*; Kawade, Kiyoshi*

ENAM 95: Int. Conf. on Exotic Nuclei and Atomic Masses, 0, p.539 - 540, 1995/00

no abstracts in English

Journal Articles

1.5,Nuclear spectroscopy

Sekine, Toshiaki

Dai-4-Pan Jikken Kagaku Kouza, 14; Kaku, Hoshasen, p.83 - 111, 1992/00

no abstracts in English

Oral presentation

New additional experiments of $$alpha$$-decay spectroscopy for $$^{261}$$Rf

Asai, Masato; Tsukada, Kazuaki; Sato, Nozomi*; Sato, Tetsuya; Toyoshima, Atsushi; Ishii, Tetsuro; Miyashita, Sunao*; Kaneya, Yusuke*; Shibata, Michihiro*; Shima, Yosuke*

no journal, , 

We have performed $$alpha$$-$$gamma$$ coincidence and high-resolution $$alpha$$-fine structure spectroscopy for $$^{261}$$Rf, and have obtained new information on nuclear structure of $$^{261}$$Rf. We have confirmed the existence of two $$gamma$$ transitions following the $$alpha$$ decay, and have succeeded in determining the $$alpha$$-transition energy very accurately. On the basis of these experimental results, we have estimated the spin-parities and neutron single-particle configurations of the ground- and isomeric states of $$^{261}$$Rf, and have obtained information on the single-particle configurations and nuclear deformations for heavier superheavy nuclei.

Oral presentation

Alpha decay of $$^{261}$$Rf

Asai, Masato; Tsukada, Kazuaki; Sato, Nozomi*; Sato, Tetsuya; Toyoshima, Atsushi; Ishii, Tetsuro; Miyashita, Sunao*; Kaneya, Yusuke*; Shima, Yosuke*; Shibata, Michihiro*

no journal, , 

We have obtained new experimental data for nuclear structure of $$^{261}$$Rf through $$alpha$$-decay spectroscopy. We have reconfirmed existence of two $$gamma$$ transitions in the $$alpha$$ decay of $$^{261}$$Rf through $$alpha$$-$$gamma$$ coincidence measurement, and determined the $$alpha$$-transition energy very precisely through high-resolution $$alpha$$-fine structure measurement. On the basis of these experimental results, we have estimated spin-parities and neutron single-particle configurations of the ground- and isomeric states of $$^{261}$$Rf, and have obtained information on the single-particle configurations and nuclear deformations for heavier superheavy nuclei.

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