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)
Contributing organizations
Related projects
- Studies of exotic nuclei for understanding the origin of elements in the Universe
- Kankainen, Anu
- Research Council of Finland
- Studies of exotic nuclei for understanding the origin of elements in the Universe
- Kankainen, Anu
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2017
JUFO rating: 1