A4 Artikkeli konferenssijulkaisussa
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-tekijät tai -toimittajat

Rinta-Antila, Sami
Eronen, Tommi
Canete, Laetitia
Kankainen, Anu
Jokinen, Ari
Moore, Iain
Nesterenko, Dmitrii

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Canete, Laetitia; Eronen, Tommi; Jokinen, Ari; Kankainen, Anu; Moore, Iain; Nesterenko, Dmitrii; Rinta-Antila, Sami

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

Emojulkaisun toimittajat: Cognata, M. La; Lattuada, M.; Palmerini, S.; Pizzone, R.G.; Spitaleri, C.

ISBN: 978-2-7598-9030-9

Lehti tai sarja: EPJ Web of Conferences

ISSN: 2101-6275

eISSN: 2100-014X

Julkaisuvuosi: 2017

Sarjan numero: 165

Artikkelinumero: 01008

Kustantaja: EDP Sciences

Julkaisumaa: Ranska

Julkaisun kieli: englanti

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

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/56698

Tiivistelmä

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.

YSO-asiasanat: nukleonit; protonit; atomipainot

Vapaat asiasanat: Atomic Weights; Antiprotons; Ion Traps (Instrumentation)

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