1 Ocak 2018 Dergi makalesi Açık Erişim

Cakmak, Sadiye; Nabi, Jameel-Un; Babacan, Tahsin

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    <subfield code="a">Investigation of Gamow Teller transition properties in Ni56-64 isotopes using QRPA methods</subfield>
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    <subfield code="a">Weak rates in nickel isotopes play an integral role in the dynamics of supernovae. Electron capture and beta-decay of nickel isotopes, dictated by Gamow-Teller transitions, significantly alter the lepton fraction of the stellar matter. In this paper we calculate Gamow-Teller (GT) transitions for isotopes of nickel, Ni56-64, using QRPA methods. The GT strength distributions were calculated using four different QRPA models. Our results are also compared with previous theoretical calculations and measured strength distributions wherever available. Our investigation concluded that amongst all RPA models, the pn-QRPA(C) model best described the measured GT distributions (including total GT strength and centroid placement). It is hoped that the current investigation of GT properties would prove handy and may lead to a better understanding of the presupernova evolution of massive stars. (C) 2017 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="u">GIK Inst Engn Sci &amp; Technol, Fac Engn Sci, Swabi 23640, Khyber Pakhtunk, Pakistan</subfield>
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    <subfield code="u">Osmangazi Univ, Program Med Monitoring Tech, Eskisehir, Turkey</subfield>
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    <subfield code="a">10.1016/j.nuclphysa.2017.11.006</subfield>
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