High-precision mass measurements for the rp-process at JYFLTRAP
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.
Main Authors
Format
Conferences
Conference paper
Published
2017
Series
Subjects
Publication in research information system
Publisher
EDP Sciences
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201801091123Use this for linking
Parent publication ISBN
978-2-7598-9030-9
Review status
Peer reviewed
ISSN
2101-6275
DOI
https://doi.org/10.1051/epjconf/201716501008
Conference
Nuclear Physics in Astrophysics
Language
English
Published in
EPJ Web of Conferences
Is part of publication
Nuclear Physics in Astrophysics VIII (NPA8 2017) Catania, Italy, June 18-23, 2017
Citation
- 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
License
Funder(s)
Academy of Finland
Academy of Finland
Funding program(s)
Akatemiatutkija, SA
Akatemiatutkijan tutkimuskulut, SA
Academy Research Fellow, AoF
Research costs of Academy Research Fellow, AoF
Additional information about funding
This work has been supported by the Academy of Finland under projects No. 275389 and 284516 as
well as under the Finnish Centre of Excellence Programme 2012-2017 (Nuclear and Accelerator
Based Physics Research at JYFL)
Copyright© The Authors, published by EDP Sciences, 2017. This is an open access article distributed under the terms of the Creative Commons License.