A1 Journal article (refereed)
Mass of astrophysically relevant 31Cl and the breakdown of the isobaric multiplet mass equation (2016)

Kankainen, A., Canete, L., Eronen, T., Hakala, J., Jokinen, A., Koponen, J., Moore, I., Nesterenko, D., Reinikainen, J., Rinta-Antila, S., Voss, A., & Äystö, J. (2016). Mass of astrophysically relevant 31Cl and the breakdown of the isobaric multiplet mass equation. Physical Review C, 93(4), Article 041304(R). https://doi.org/10.1103/PhysRevC.93.041304

JYU authors or editors

Rinta-Antila, Sami
Eronen, Tommi
Kankainen, Anu
Canete, Laetitia
Hakala, Jani
Jokinen, Ari
Koponen, Jukka
Moore, Iain
Nesterenko, Dmitrii
Reinikainen, Juuso
Voss, Annika

Publication details

All authors or editors: Kankainen, Anu; Canete, Laetitia; Eronen, Tommi; Hakala, Jani; Jokinen, Ari; Koponen, Jukka; Moore, Iain; Nesterenko, Dmitrii; Reinikainen, Juuso; Rinta-Antila, Sami; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2016

Volume: 93

Issue number: 4

Article number: 041304(R)

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.93.041304

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/50178

Abstract

The mass of 31Cl has been measured with the JYFLTRAP double-Penning-trap mass spectrometer at the Ion Guide Isotope Separator On-Line (IGISOL) facility. The determined mass-excess value, −7034.7(34) keV, is 15 times more precise than in the Atomic Mass Evaluation 2012. The quadratic form of the isobaric multiplet mass equation for the T=3/2 quartet at A=31 fails (χ2n=11.6) and a nonzero cubic term, d=−3.5(11) keV, is obtained when the new mass value is adopted. 31Cl has been found to be less proton-bound, with a proton separation energy of Sp=264.6(34) keV. Energies for the excited states in 31Cl and the photodisintegration rate on 31Cl have been determined with significantly improved precision by using the new Sp value. The improved photodisintegration rate helps to constrain astrophysical conditions where 30S can act as a waiting point in the rapid proton capture process in type-I x-ray bursts.

Keywords: astrophysics; nuclear physics; chlorine; isotopes; protons; mass spectrometry

Free keywords: isobaric multiplet mass equation; photodisintegration

Fields of science: