Anomalously hindered E2 strength B(E2;2+(1)-->0+) in 16C.
The electric quadrupole transition from the first 2(+) state to the ground 0(+) state in 16C is studied through measurement of the lifetime by a recoil shadow method applied to inelastically scattered radioactive 16C nuclei. The measured mean lifetime is 77+/-14(stat)+/-19(syst) ps. The central value of mean lifetime corresponds to a B(E2;2+(1)-->0(+)) value of 0.63e(2) fm(4), or 0.26 Weisskopf units. The transition strength is found to be anomalously small compared to the empirically predicted value.
RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan. imai@rarfaxp.riken.go.jp
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Imai
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Ong
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Aoi
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Sakurai
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Demichi
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Kawasaki
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Baba
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Dombrádi
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Elekes
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Fukuda
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Fülöp
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Gelberg
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Gomi
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Hasegawa
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Ishikawa
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Iwasaki
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Kaneko
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Kanno
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Kishida
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Kondo
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Kubo
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Kurita
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Michimasa
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Minemura
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Miura
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Motobayashi
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Nakamura
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Notani
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Onishi
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Saito
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Shimoura
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Sugimoto
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Suzuki
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Takeshita
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Takeuchi
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Tamaki
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Yamada
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Yoneda
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Watanabe
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Ishihara