Identification of a millisecond isomeric state in
Cd
via the detection of internal conversion and Compton electrons
内部転換とコンプトン電子の検出による
Cd
のミリ秒核異性体の同定
Taprogge, J.*; Jungclaus, A.*; Grawe, H.*; 西村 俊二*; Xu, Z. Y.*; Doornenbal, P.*; Lorusso, G.*; N
cher, E.*; Simpson, G. S.*; S
derstr
m, P.-A.*; 炭竃 聡之*; 馬場 秀忠*; Browne, F.*; Fukuda, N.*; Gernh
user, R.*; Gey, G.*; 稲辺 尚人*; Isobe, T.*; Jung, H. S.*; 亀田 大輔*; Kim, G. D.*; Kim, Y.-K.*; Kojouharov, I.*; 久保 敏幸*; Kurz, N.*; Kwon, Y. K.*; Li, Z.*; 櫻井 博儀*; Schaffner, H.*; Steiger, K.*; Suzuki, H.*; Takeda, H.*; Vajta, Zs.*; Watanabe, H.*; Wu, J.*; Yagi, A.*; 吉永 健太*; Benzoni, G.*; B
nig, S.*; Chae, K. Y.*; Coraggio, L.*; Covello, A.*; Daugas, J.-M.*; Drouet, F.*; Gadea, A.*; Gargano, A.*; Ilieva, S.*; Kondev, F. G.*; Kr
ll, T.*; Lane, G. J.*; Montaner-Piz
, A.*; Moschner, K.*; M
cher, D.*; Naqvi, F.*; 新倉 潤*; 西畑 洸希*; 小田原 厚子*; Orlandi, R.
; Patel, Z.*; Podoly
k, Zs.*; Wendt, A.*
Taprogge, J.*; Jungclaus, A.*; Grawe, H.*; Nishimura, Shunji*; Xu, Z. Y.*; Doornenbal, P.*; Lorusso, G.*; N
cher, E.*; Simpson, G. S.*; S
derstr
m, P.-A.*; Sumikama, Toshiyuki*; Baba, Hidetada*; Browne, F.*; Fukuda, N.*; Gernh
user, R.*; Gey, G.*; Inabe, Naoto*; Isobe, T.*; Jung, H. S.*; Kameda, Daisuke*; Kim, G. D.*; Kim, Y.-K.*; Kojouharov, I.*; Kubo, Toshiyuki*; Kurz, N.*; Kwon, Y. K.*; Li, Z.*; Sakurai, Hiroyoshi*; Schaffner, H.*; Steiger, K.*; Suzuki, H.*; Takeda, H.*; Vajta, Zs.*; Watanabe, H.*; Wu, J.*; Yagi, A.*; Yoshinaga, Kenta*; Benzoni, G.*; B
nig, S.*; Chae, K. Y.*; Coraggio, L.*; Covello, A.*; Daugas, J.-M.*; Drouet, F.*; Gadea, A.*; Gargano, A.*; Ilieva, S.*; Kondev, F. G.*; Kr
ll, T.*; Lane, G. J.*; Montaner-Piz
, A.*; Moschner, K.*; M
cher, D.*; Naqvi, F.*; Niikura, Megumi*; Nishibata, Hiroki*; Odahara, Atsuko*; Orlandi, R.; Patel, Z.*; Podoly
k, Zs.*; Wendt, A.*
The decay of an isomeric state in the neutron-rich nucleus
Cd was observed via the detection of internal conversion and Compton electrons. This measurement provided the first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a
U beam at the RIBF facility at RIKEN. From the measured yields of
rays and internal conversion electrons, E3 multipolarity was tentatively assigned to the isomeric transition. A half-life of 3.6(2) ms was determined for this new state which, by comparison with shell-model calculations, was tentatively assigned a spin of (21/2
).