Solution of Angular Parts of the Forbidden Beta Moment Matrix Elements for Rank 0, 1 and 2

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Cumhuriyet Üniversitesi Fen-Edebiyat Fakültesi Fen Bilimleri Dergisi
Volume:36 Issue:2
Solution of Angular Parts of the Forbidden Beta Moment Matrix Elements for Rank 0, 1 and 2

Solution of Angular Parts of the Forbidden Beta Moment Matrix Elements for Rank 0, 1 and 2

Authors : Necla ÇAKMAK, İsmail ÇAYLI

Pages : 24-36

View : 37 | Download : 13

Publication Date : 2015-03-21

Article Type : Other Papers

Abstract :In astrophysical environments, allowed Gamow-Teller (GT) transitions are important, particularly for β -decay rates in presupernova evolution of massive stars, since they contribute to the fine-tuning of the lepton-to baryon content of the stellar matter prior to and during the collapse of a heavy star. In environments where GT transitions are unfavored, first-forbidden transitions become important especially in medium heavy and heavy nuclei. Particularly in case of neutron-rich nuclei, first-forbidden transitions are favored primarily due to the phase-space amplification for these transitions. In this study, the angular part of the beta (β) moment matrix elements of the , and first forbidden beta decay transition have been solved directly without any assumption. In the calculation of the nuclear matrix elements have been considered the contribution coming from the spin-orbit term in the shell model potential.
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