Theoretical investigation of the Gamow-Teller transition across <I>N</I>=40 shell

ZHI Qi-Jun; YU Yan; ZHENG Qiang

doi:10.1088/1674-1137/35/11/008

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2024年10月30日

Chinese Physics C> 2011, Vol. 35> Issue(11) : 1022-1025 DOI: 10.1088/1674-1137/35/11/008

Theoretical investigation of the Gamow-Teller transition across N=40 shell

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Abstract：
The Gamow-Teller transitions for pf shell nuclei with proton number less than 40 and neutron number larger than 40 were believed to be blocked, due to the full filling of the neutron orbit. However, recent experimental research shows that the Gamow-Teller transitions for these kinds of nuclei are not blocked. In this paper, we systematically calculate the GT transition of pf shell nuclei ⁷⁶Se in different truncations, and the results are compared with experimental results. It is shown that, due to correlations, the believed blocked GT transition occurs, and the shell model calculations reproduce the experimental GT strength. In addition, the electron capture rates in a stellar environment are calculated and discussed.

References

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ZHI Qi-Jun, YU Yan and ZHENG Qiang. Theoretical investigation of the Gamow-Teller transition across N=40 shell[J]. Chinese Physics C, 2011, 35(11): 1022-1025. doi: 10.1088/1674-1137/35/11/008

ZHI Qi-Jun, YU Yan and ZHENG Qiang. Theoretical investigation of the Gamow-Teller transition across N=40 shell[J]. Chinese Physics C, 2011, 35(11): 1022-1025. doi: 10.1088/1674-1137/35/11/008 shu

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Received: 2011-02-12
Revised: 2011-06-13

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沈阳化工大学材料科学与工程学院沈阳 110142

Theoretical investigation of the Gamow-Teller transition across N=40 shell

Received Date: 2011-02-12
Accepted Date: 2011-06-13
Available Online: 2011-11-05

Abstract: The Gamow-Teller transitions for pf shell nuclei with proton number less than 40 and neutron number larger than 40 were believed to be blocked, due to the full filling of the neutron orbit. However, recent experimental research shows that the Gamow-Teller transitions for these kinds of nuclei are not blocked. In this paper, we systematically calculate the GT transition of pf shell nuclei ⁷⁶Se in different truncations, and the results are compared with experimental results. It is shown that, due to correlations, the believed blocked GT transition occurs, and the shell model calculations reproduce the experimental GT strength. In addition, the electron capture rates in a stellar environment are calculated and discussed.