A4 Article in conference proceedings
High-precision mass measurements for the rp-process at JYFLTRAP (2017)

Canete, L., Eronen, T., Jokinen, A., Kankainen, A., Moore, I., Nesterenko, D., & Rinta-Antila, S. (2017). High-precision mass measurements for the rp-process at JYFLTRAP. In M. L. Cognata, M. Lattuada, S. Palmerini, R. Pizzone, & C. Spitaleri (Eds.), Nuclear Physics in Astrophysics VIII (NPA8 2017) Catania, Italy, June 18-23, 2017 (Article 01008). EDP Sciences. EPJ Web of Conferences, 165. https://doi.org/10.1051/epjconf/201716501008

JYU authors or editors

Publication details

All authors or editors: Canete, Laetitia; Eronen, Tommi; Jokinen, Ari; Kankainen, Anu; Moore, Iain; Nesterenko, Dmitrii; Rinta-Antila, Sami

Parent publication: Nuclear Physics in Astrophysics VIII (NPA8 2017) Catania, Italy, June 18-23, 2017

Parent publication editors: Cognata, M. La; Lattuada, M.; Palmerini, S.; Pizzone, R.G.; Spitaleri, C.

ISBN: 978-2-7598-9030-9

Journal or series: EPJ Web of Conferences

ISSN: 2101-6275

eISSN: 2100-014X

Publication year: 2017

Number in series: 165

Article number: 01008

Publisher: EDP Sciences

Publication country: France

Publication language: English

DOI: https://doi.org/10.1051/epjconf/201716501008

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/56698

Abstract

The double Penning trap JYFLTRAP at the University of Jyvaskyla has been successfully used to achieve high-precision mass measurements of nuclei involved in the rapid proton-capture (rp) process. A precise mass measurement of 31Cl is essential to estimate the waiting point condition of 30S in the rp-process occurring in type I x-ray bursts (XRBs). The mass-excess of 31Cl measured at JYFLTRAP, -7034.7(3.4) keV, is 15 more precise than the value given in the Atomic Mass Evaluation 2012. The proton separation energy Sp determined from the new mass-excess value confirmed that 30S is a waiting point, with a lowertemperature limit of 0.44 GK. The mass of 52Co effects both 51Fe(p,γ)52Co and 52Co(p,γ)53Ni reactions. The mass-excess value measured, - 34 331.6(6.6) keV is 30 times more precise than the value given in AME2012. The Q values for the 51Fe(p,γ)52Co and 52Co(p,γ)53Ni reactions are now known with a high precision, 1418(11) keV and 2588(26) keV respectively. The results show that 52Co is more proton bound and 53Ni less proton bound than what was expected from the extrapolated value.

Keywords: nucleons; protons; atomic weights

Free keywords: Atomic Weights; Antiprotons; Ion Traps (Instrumentation)

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Ministry reporting: Yes

Reporting Year: 2017

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