Investigation of the [лh9/2vi13/2－1] 10－ Isomer in 206At

FENG XiChen; GUO YingXiang; ZHOU XiaoHong; LEI XiangGuo; HUANG WenXue; HE JianJun; ZHU ShaoFei; LIU Zhong; ZHANG YuHu; LUO YiXiao; WEN ShuXian; YUAN GuanJun; WU XiaoGua

Chinese Physics C> 2000, Vol. 24> Issue(4) : 359-363

Investigation of the [лh_9/2vi_13/2^－1] 10^－ Isomer in ²⁰⁶At

Institute of Modern Physics, The Chinese Academy of Sciences,Lanzhou 73000, China2 China Institute of Atomic Energy,Beijing 102413, China

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Abstract：
The high-spin states of ²⁰⁶At have been studied in the ¹⁹⁷An (¹²C, 3n)²⁰⁶At reaction at ¹²C energies from 60 to 80 MeV using technique of in-beam γ-ray spectroscopy. Measurements of Tray excitation functions, γ-γ-t coincidences, and y-ray angular distributions were performed. A level scheme for ²⁰⁶At, including a 10^－ isomer with a measured half-life of 908±400 ns, was established for the first the. The characteristics of the 10^－ isomers in doubly edd ²⁰⁶At nuclei were stressed.

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FENG XiChen, GUO YingXiang, ZHOU XiaoHong, LEI XiangGuo, HUANG WenXue, HE JianJun, ZHU ShaoFei, LIU Zhong, ZHANG YuHu, LUO YiXiao, WEN ShuXian, YUAN GuanJun and WU XiaoGua. Investigation of the [лh_9/2vi_13/2^－1] 10^－ Isomer in ²⁰⁶At[J]. Chinese Physics C, 2000, 24(4): 359-363.

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Received: 1999-10-27
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Investigation of the [лh_9/2vi_13/2^－1] 10^－ Isomer in ²⁰⁶At

Corresponding author: FENG XiChen,

Institute of Modern Physics, The Chinese Academy of Sciences,Lanzhou 73000, China2 China Institute of Atomic Energy,Beijing 102413, China

Received Date: 1999-10-27
Accepted Date: 1900-01-01
Available Online: 2000-04-05

Abstract: The high-spin states of ²⁰⁶At have been studied in the ¹⁹⁷An (¹²C, 3n)²⁰⁶At reaction at ¹²C energies from 60 to 80 MeV using technique of in-beam γ-ray spectroscopy. Measurements of Tray excitation functions, γ-γ-t coincidences, and y-ray angular distributions were performed. A level scheme for ²⁰⁶At, including a 10^－ isomer with a measured half-life of 908±400 ns, was established for the first the. The characteristics of the 10^－ isomers in doubly edd ²⁰⁶At nuclei were stressed.