Mass of astrophysically relevant 31Cl and the breakdown of the isobaric multiplet mass equation
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
Julkaistu sarjassa
Physical Review CTekijät
Päivämäärä
2016Tekijänoikeudet
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
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.
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American Physical SocietyISSN Hae Julkaisufoorumista
2469-9985Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/25706747
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This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012–2017 (Nuclear and Accelerator Based Physics Research atJYFL). A.K., D.N., and L.C. acknowledge support from theAcademy of Finland under project No. 275389.Samankaltainen aineisto
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