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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, Skolan för teknikvetenskap (SCI), Fysik, Kärnfysik.ORCID-id: 0000-0002-1406-5695
Vise andre og tillknytning
2016 (engelsk)Inngår i: 13TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES (OMEG2015), EDP Sciences, 2016, artikkel-id 04006Konferansepaper, Publicerat paper (Fagfellevurdert)
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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.

sted, utgiver, år, opplag, sider
EDP Sciences, 2016. artikkel-id 04006
Serie
EPJ Web of Conferences, ISSN 2100-014X ; 109
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Identifikatorer
URN: urn:nbn:se:kth:diva-185661DOI: 10.1051/epjconf/201610904006ISI: 000372789800010Scopus ID: 2-s2.0-84962268405OAI: oai:DiVA.org:kth-185661DiVA, id: diva2:923444
Konferanse
13th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG), JUN 24-27, 2015, Beijing, PEOPLES R CHINA
Merknad

QC 20160426

Tilgjengelig fra: 2016-04-26 Laget: 2016-04-25 Sist oppdatert: 2016-04-26bibliografisk kontrollert

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