The β-delayed proton decay of 147Er is studied experimentally using the 58Ni+92Mo reaction at a beam energy of 383 MeV. Based on a He-jet apparatus coupled with a tape transport system, theβ-delayed proton radioactivities both from the νs1/2 ground state and the νh11/2 isomer in 147Er are identified by proton-γ coincidence measurements. By analyzing the time distribution of the 4+→ 2+γtransition in the grand-daughter nucleus 146Dy, a half-life of 1.6±0.2 s is determined for the νh11/2 isomer in 147Er. The half-life for the ground state of 147Er is estimated to be 3.2±1.2 s.
The β-delayed proton decay of 147Er is studied experimentally using the 58Ni+92Mo reaction at a beam energy of 383 MeV. Based on a He-jet apparatus coupled with a tape transport system, theβ-delayed proton radioactivities both from the νs1/2 ground state and the νh11/2 isomer in 147Er are identified by proton-γ coincidence measurements. By analyzing the time distribution of the 4+→ 2+γtransition in the grand-daughter nucleus 146Dy, a half-life of 1.6±0.2 s is determined for the νh11/2 isomer in 147Er. The half-life for the ground state of 147Er is estimated to be 3.2±1.2 s.
[1] Tantawy M N, Bingham C R, Rykaczewski K P, Batchelder J C, Królas W, Danchev M, Fong D, Ginter T N, Gross C J, Grzywacz R, Hagino K, Hamilton J H, Hartley D J, Karny M, Li K, Mazzocchi C, Piechaczek A, Ramayya A V, Pykaczewski K, Shapira D, Stolz A, Winger J A, Yu C H and Zganjar E F 2006 Phys. Rev. C 73 024316 [2] Wilmarth P A 1988 PhD Dissertation (Berkeley: University of California) [3] Schardt D, Larsson P O, Kirchner R, Klepper O, Koslowsky V T, Roeckl E, Rykaczewski K, Kleinheinz P and Zuber K 1984 International Conference on Atomic Masses and Fundamental Constants (Darmstadt, Federal Republic of Germany 1984) p 222 [4] Wang H L, Song L T, Zhao W J, Liu Z X, Zhang Y H, Zhou X H, Guo Y X and Lei X Guo 2010 Chin. Phys. Lett. 27 022301 [5] Gui S Z, Colombo G and Nolte E 1982 Z. Phys. A 305 297 [6] Xu S W, Li Z K, Xie Y X, Pan Q Y, Yu Y Adam A, Wang C F, Xing J P, Hu Q Y, Li S H, Chen H Y, Zhang T M, Jin G M, Luo Y X, Penionzhkevich Y and Gangrsky Y 1999 Phys. Rev. C 60 061302(R)
WANG Lie-Lin;ZHU Li-Hua;LU Jing-Bin;WU Xiao-Guang;LI Guang-Sheng;HAO Xin;ZHENG Yun;HE Chuang-Ye;WANG Lei;LI Xue-Qin;LIU Ying;PAN Bo;ZHAO Yan-Xin;LI Zhong-Yu;DING Huai-Bo. Lifetimes of High Spin States in an Odd-Proton Nucleus 129Cs[J]. 中国物理快报, 2010, 27(2): 22101-022101.
LIAN Gang;SU Jun;WANG Bao-Xiang;JIANG Chao;BAI Xi-Xiang;ZENGSheng;ZHENG Yong-Nan;ZHU Sheng-Yun;ZHU Li-Hua; LIU Wei-Ping;LI Zhi-Hong;WANG You-Bao;GUO Bing; LI Yun-Ju;QIN Xing. Enhancement of β+-Decay Rate of 22Na in Metal Pd at Low Temperature[J]. 中国物理快报, 2008, 25(1): 70-72.
2010, Vol. 27 
