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In-beam $$gamma$$-ray spectroscopy of $$^{248,250,252}$$Cf by neutron-transfer reactions using a Cf target

Cf標的と中性子移行反応を用いた$$^{248,250,252}$$Cfのインビーム$$gamma$$線分光

高橋 竜太; 石井 哲朗; 浅井 雅人; 長江 大輔*; 牧井 宏之; 塚田 和明; 豊嶋 厚史; 石井 康雄; 松田 誠; 牧嶋 章泰*; 静間 俊行; 河野 俊之*; 小川 雅生*

Takahashi, Ryuta; Ishii, Tetsuro; Asai, Masato; Nagae, Daisuke*; Makii, Hiroyuki; Tsukada, Kazuaki; Toyoshima, Atsushi; Ishii, Yasuo; Matsuda, Makoto; Makishima, Akiyasu*; Shizuma, Toshiyuki; Kono, Toshiyuki*; Ogawa, Masao*

放射能の強いCf標的と$$^{18}$$Oビームによる中性子移行反応を用いてインビーム$$gamma$$線分光を行い、$$^{248,250,252}$$Cfの基底バンドをそれぞれ10$$^{+}$$, 12$$^{+}$$, 10$$^{+}$$まで新たに確立した。$$^{248,250,252}$$Cfからの$$gamma$$線は、Si$$Delta E$$-$$E$$検出器を用いて、散乱粒子である$$^{16-19}$$Oの質量数とエネルギーを識別しながら測定した。本実験はCf標的を用いた最初のインビーム$$gamma$$線分光である。

The ground-state bands of $$^{248,250,252}$$Cf have been established up to 10$$^{+}$$, 12$$^{+}$$, and 10$$^{+}$$ states, respectively, by in-beam $$gamma$$-ray spectroscopy using neutron-transfer reactions with a $$^{18}$$O beam and a highly radioactive Cf target. The deexcitation $$gamma$$ rays in $$^{248,250,252}$$Cf were identified by taking coincidences with outgoing particles of $$^{16-19}$$O measured with Si $$Delta E$$-$$E$$ detectors, and by selecting their kinetic energies. This is the first in-beam $$gamma$$-ray spectroscopy for Cf isotopes.

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パーセンタイル:39.21

分野:Physics, Nuclear

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