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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
Series
, EPJ Web of Conferences, ISSN 2100-014X ; 109
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-185661DOI: 10.1051/epjconf/201610904006ISI: 000372789800010ScopusID: 2-s2.0-84962268405OAI: oai:DiVA.org:kth-185661DiVA: diva2:923444
Conference
13th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG), JUN 24-27, 2015, Beijing, PEOPLES R CHINA
Note

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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