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The beta-decay rates of Fe-59 isotopes in shell burning environments and their influences on the production of Fe-60 in massive star
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.ORCID iD: 0000-0002-1406-5695
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2016 (English)In: 13TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES (OMEG2015), EDP Sciences, 2016, 04006Conference paper (Refereed)Text
Abstract [en]

The experimental B(GT) strengths of the Fe-59 excited states were employed to determine the transition strengths which greatly contribute Fe-59 stellar beta-decay at typical carbon shell burning temperature. The result has been compared with the theoretical rates FFN (Fuller-Fowler-Newman) and LMP (Langanke&Martinez-Pinedo). Impact of the newly determined rate on the synthesis of cosmic gamma-emitter 60Fe has also been studied using one-zone model calculation. Our results show Fe-59 stellar beta-decay rate plays an important role in the Fe-60 nucleosynthesis. However the uncertainty of the decay rate is rather large due to the error of B(GT) strength that requires further studies.

Place, publisher, year, edition, pages
EDP Sciences, 2016. 04006
, EPJ Web of Conferences, ISSN 2100-014X ; 109
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-185661DOI: 10.1051/epjconf/201610904006ISI: 000372789800010ScopusID: 2-s2.0-84962268405OAI: diva2:923444
13th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG), JUN 24-27, 2015, Beijing, PEOPLES R CHINA

QC 20160426

Available from: 2016-04-26 Created: 2016-04-25 Last updated: 2016-04-26Bibliographically approved

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Qi, Chong
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