The 76Se Gamow-Teller strength distribution and its importance for stellar electron capture rates

被引：35

作者：

Zhi, Q. ^{[1
,2
]}

Langanke, K. ^{[1
,3
,4
]}

Martinez-Pinedo, G. ^{[1
]}

Nowacki, F. ^{[5
,6
]}

Sieja, K. ^{[5
,6
]}

机构：

[1] GSI Helmholtzzentrum Schwerionenforsch, Darmstadt, Germany

[2] Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang, Peoples R China

[3] Tech Univ Darmstadt, Darmstadt, Germany

[4] Frankfurt Inst Adv Studies, Frankfurt, Germany

[5] Univ Strasbourg, IPHC, F-67037 Strasbourg, France

[6] CNRS, UMR7178, F-67037 Strasbourg, France

来源：

NUCLEAR PHYSICS A | 2011年 / 859卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Beta decay; Electron capture; Core collapse supernova; Shell-model; WEAK INTERACTION RATES; INTERMEDIATE-MASS NUCLEI; SHELL-MODEL CALCULATIONS; MONTE-CARLO; COLLAPSE;

D O I：

10.1016/j.nuclphysa.2011.04.010

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recent theoretical studies predicted that, due to nuclear correlations across the N = 40 shell gap, electron captures on nuclei with proton numbers Z <40 and neutron numbers N > 40 would not be strongly suppressed due to Pauli blocking of Gamow-Teller (GT) transitions. This prediction has recently been confirmed by the experimental determination of the single-particle occupation numbers in Se-76 and by the measurement of the Se-76 GT(+) strength distribution. In this manuscript we derive such occupation numbers and GT(+) distributions within large-scale shell model studies. Based on the same models, we calculate stellar electron capture rates and compare them to those obtained from the experimental GT(+) data. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：172 / 184

页数：13

共 50 条

[1] Nuclear structure properties and stellar weak rates for 76Se: Unblocking of the Gamow Teller strength
Nabi, Jameel-Un
Ishfaq, Mavra
Boyukata, Mahmut
Riaz, Muhammad
NUCLEAR PHYSICS A, 2017, 966 : 1 - 19
[2] Allowed Gamow-Teller strength distributions and stellar electron capture rates on odd-A nuclei
Nabi, Jameel-Un
Majid, Muhammad
Riaz, Muhammad
PROCEEDINGS OF THE INTERNATIONAL WORKSHOP NEW ASPECTS OF THE HADRON AND ASTRO/NUCLEAR PHYSICS, 2019, 49
[3] Gamow-Teller strength distributions at finite temperatures and electron capture in stellar environments
Dzhioev, Alan A.
Vdovin, A. I.
Ponomarev, V. Yu.
Wambach, J.
Langanke, K.
Martinez-Pinedo, G.
PHYSICAL REVIEW C, 2010, 81 (01):
[4] Deformation effects on the Gamow-Teller strength distributions in the double-β decay partners 76Ge and 76Se
Sarriguren, P.
PHYSICAL REVIEW C, 2012, 86 (03):
[5] Unblocking of the Gamow-Teller strength in stellar electron capture on neutron-rich germanium isotopes
Langanke, K
Kolbe, E
Dean, DJ
PHYSICAL REVIEW C, 2001, 63 (03): : 328011 - 328015
[6] β+ Gamow-Teller Transition Strengths from 46Ti and Stellar Electron-Capture Rates
Noji, S.
Zegers, R. G. T.
Austin, Sam M.
Baugher, T.
Bazin, D.
Brown, B. A.
Campbell, C. M.
Cole, A. L.
Doster, H. J.
Gade, A.
Guess, C. J.
Gupta, S.
Hitt, G. W.
Langer, C.
Lipschutz, S.
Lunderberg, E.
Meharchand, R.
Meisel, Z.
Perdikakis, G.
Pereira, J.
Recchia, F.
Schatz, H.
Scott, M.
Stroberg, S. R.
Sullivan, C.
Valdez, L.
Walz, C.
Weisshaar, D.
Williams, S. J.
Wimmer, K.
PHYSICAL REVIEW LETTERS, 2014, 112 (25)
[7] Gamow-Teller strength distributions in 76Ge and 76Se from deformed quasiparticle random-phase approximation -: art. no. 044313
Sarriguren, P
Moya de Guerra, E
Pacearescu, L
Faessler, A
Simkovic, F
Raduta, AA
PHYSICAL REVIEW C, 2003, 67 (04):
[8] Gamow-Teller strength distributions and electron capture rates for 55Co and 56Ni
Nabi, JU
Rahman, MU
PHYSICS LETTERS B, 2005, 612 (3-4) : 190 - 196
[9] Gamow-Teller strength distributions for nuclei in presupernova stellar cores
Sutaria, FK
Ray, A
PHYSICAL REVIEW C, 1995, 52 (06): : 3460 - 3469
[10] Gamow-Teller strengths and electron-capture rates for pf-shell nuclei of relevance for late stellar evolution
Cole, A. L.
Anderson, T. S.
Zegers, R. G. T.
Austin, Sam M.
Brown, B. A.
Valdez, L.
Gupta, S.
Hitt, G. W.
Fawwaz, O.
PHYSICAL REVIEW C, 2012, 86 (01):

← 1 2 3 4 5 →