Research PapersNo Access

NEW LEVELS AND TRANSITIONS IN ⁷²Ge OBSERVED IN THE ⁷²As(β⁺+EC)⁷²Ge DECAY

Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology), Ministry of Education, Nanchang 330013, People's Republic of China

School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, People's Republic of China

School of Physics, Peking University, Beijing 100871, People's Republic of China

Search for more papers by this author

YAN LI

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China

Search for more papers by this author

JIAHUI GU

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China

Search for more papers by this author

FURONG XU

School of Physics, Peking University, Beijing 100871, People's Republic of China

Search for more papers by this author

TINGDUN WEN

Department of Physics, North University of China, Taiyuan 030051, People's Republic of China

Search for more papers by this author

YIBAO LIU

School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, People's Republic of China

Search for more papers by this author

, and

YAXIN YANG

School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, Jiangxi, People's Republic of China

Search for more papers by this author

https://doi.org/10.1142/S0218301308010118Cited by:0 (Source: Crossref)

Abstract

The decay of ⁷²As has been investigated by means of γ-ray spectroscopy. The ⁷²As nuclei were produced through the ⁷²Ge(p, n)⁷²As reaction. The Compton-suppressed spectrometer and high-purity Ge detectors have been used in singles and in coincidence modes respectively to study γ-rays in the β⁺+EC decay of ⁷²As to ⁷²Ge. 79 γ-rays, among which 3 were observed for the first time, were reported. A decay scheme of ⁷²As including 1 new level is proposed that accommodates 77 of these transitions. Tentative spin and parity assignments are suggested for a number of levels according to the log ft values and γ-branching ratios.