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dc.contributor.authorParikh, Anuj Ramesh
dc.contributor.authorLaird, A.M.
dc.contributor.authorde Séréville, N
dc.date.accessioned2016-04-12T12:12:01Z
dc.date.available2016-04-12T12:12:01Z
dc.date.issued2015-11-20
dc.identifier.citationParikh, A.R., Laird, A.M., de Séréville, N. Spectroscopy of Ne 19 for the thermonuclear O 15 (alfa,gamma) Ne 19 and F 18 (pi,alfa) O 15 reaction rates. "Physical review C", 20 Novembre 2015, vol. 92, p. 055806-1-055806-5.
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/2117/85559
dc.description.abstractUncertainties in the thermonuclear rates of the O15(a,¿)19Ne and 18F(p,a)15O reactions affect model predictions of light curves from type I x-ray bursts and the amount of the observable radioisotope F18 produced in classical novae, respectively. To address these uncertainties, we have studied the nuclear structure of Ne19 over Ex=4.0-5.1 and 6.1-7.3 MeV using the F19(He3,t)Ne19 reaction. We find the Jp values of the 4.14- and 4.20-MeV levels to be consistent with 9/2- and 7/2-, respectively, in contrast to previous assumptions. We confirm the recently observed triplet of states around 6.4 MeV and find evidence that the state at 6.29 MeV, just below the proton threshold, is either broad or a doublet. Our data also suggest that predicted but yet unobserved levels may exist near the 6.86-MeV state. Higher resolution experiments are urgently needed to further clarify the structure of Ne19 around the proton threshold before a reliable 18F(p,a)15O rate for nova models can be determined.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshNuclear astrophysics--Mathematical models
dc.titleSpectroscopy of Ne 19 for the thermonuclear O 15 (alfa,gamma) Ne 19 and F 18 (pi,alfa) O 15 reaction rates
dc.typeArticle
dc.subject.lemacAstrofísica nuclear -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica
dc.identifier.doi10.1103/PhysRevC.92.055806
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://journals.aps.org/prc/abstract/10.1103/PhysRevC.92.055806
dc.rights.accessOpen Access
drac.iddocument17365752
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorParikh, A.R.; Laird, A.M.; de Séréville, N.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical review C
upcommons.citation.volume92
upcommons.citation.startingPage055806-1
upcommons.citation.endingPage055806-5


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