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Level structure of 30S: Implications for the astrophysical 29P(p,γ)30S reaction rate in ONe novae and x-ray bursts

Lotay, G, Wallace, JP, Woods, PJ, Seweryniak, D, Carpenter, MP, Chiara, CJ, Doherty, DT, Janssens, RVF, Lauritsen, T, Rogers, AM and Zhu, S (2012) Level structure of 30S: Implications for the astrophysical 29P(p,γ)30S reaction rate in ONe novae and x-ray bursts Physical Review C - Nuclear Physics, 86 (4).

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Abstract

A γ-ray spectroscopy study of 30S is presented. Excitation energies have been determined with improved precision over previous studies and firm spin-parity assignments have been made for key 29P+p resonant states. An evaluation of the 29P(p,γ)30S reaction for T=0.08-2.5 GK shows that the 3 + and 2 + resonant states located at E r=289(3) and 410(3) keV, respectively, dominate the 29P(p,γ)30S reaction rate in ONe novae, while the 410-keV resonance is expected to govern the rate in x-ray burster environments. These new, precise resonance energy measurements and firm spin-parity assignments have significantly reduced uncertainties in the 29P(p,γ)30S reaction in ONe novae and x-ray bursts. In particular, the reaction rate is now specified precisely enough for calculations of isotopic abundances in ONe novae ejecta. © 2012 American Physical Society.

Item Type: Article
Authors :
NameEmailORCID
Lotay, Gg.lotay@surrey.ac.ukUNSPECIFIED
Wallace, JPUNSPECIFIEDUNSPECIFIED
Woods, PJUNSPECIFIEDUNSPECIFIED
Seweryniak, DUNSPECIFIEDUNSPECIFIED
Carpenter, MPUNSPECIFIEDUNSPECIFIED
Chiara, CJUNSPECIFIEDUNSPECIFIED
Doherty, DTUNSPECIFIEDUNSPECIFIED
Janssens, RVFUNSPECIFIEDUNSPECIFIED
Lauritsen, TUNSPECIFIEDUNSPECIFIED
Rogers, AMUNSPECIFIEDUNSPECIFIED
Zhu, SUNSPECIFIEDUNSPECIFIED
Date : 24 October 2012
Identification Number : 10.1103/PhysRevC.86.042801
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:40
Last Modified : 17 May 2017 15:12
URI: http://epubs.surrey.ac.uk/id/eprint/840053

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