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dc.contributor.authorBest, J.
dc.contributor.authorStoll, H.
dc.contributor.authorArlandini, C.
dc.contributor.authorJaag, S.
dc.contributor.authorKappeler, F.
dc.contributor.authorWisshak, K.
dc.contributor.authorMengoni, A.
dc.contributor.authorReffo, G.
dc.contributor.authorRauscher, T.
dc.date.accessioned2013-05-09T08:25:04Z
dc.date.available2013-05-09T08:25:04Z
dc.date.issued2001-07
dc.identifier.citationBest , J , Stoll , H , Arlandini , C , Jaag , S , Kappeler , F , Wisshak , K , Mengoni , A , Reffo , G & Rauscher , T 2001 , ' s-process branchings at Sm-151, Eu-154, and Dy-163 ' , Physical Review C , vol. 64 , no. 1 , 015801 . https://doi.org/10.1103/PhysRevC.64.015801
dc.identifier.issn2469-9985
dc.identifier.otherPURE: 1633688
dc.identifier.otherPURE UUID: da3e6d70-21b5-4270-95cf-f3ac3a850f41
dc.identifier.otherWOS: 000169884000040
dc.identifier.otherScopus: 18344415502
dc.identifier.urihttp://hdl.handle.net/2299/10667
dc.description.abstractThe (n, gamma) cross sections of the stable europium isotopes Eu-151 and Eu-153 have been measured by irradiating oxide samples in a quasistellar neutron spectrum. From the induced activities, the stellar cross sections of Eu-151 and Eu-153 at a thermal energy of kT=30 keV were found to be [sigmav]/v(T)=3821+/-152 mb and 2733 +/- 110 mb, respectively. These results allowed us to resolve severe discrepancies among previous data. Similar activation measurements were also performed on Sm-152,Sm-154 and Er-164,Er-170. Among these results, the stellar cross section of the s-only isotope Er-164 [sigmav]/v(T)=1084+/-51 mb at kT=30 keV is particularly important. Statistical model calculations were performed with emphasis on the effect of excited states as well as on the unstable isotopes Sm-151, Eu-152, and Eu-154. The combined set of cross sections was used for an updated analysis of the branchings at A=151, 152, 154, and 163. The temperature and density estimates derived via the classical approach are discussed and compared to stellar models for helium shell burning in low mass stars.en
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofPhysical Review C
dc.subjectSTARS
dc.subjectISOTOPIC COMPOSITIONS
dc.subjectCAPTURE CROSS-SECTIONS
dc.subjectELEMENTS
dc.subjectNUCLEOSYNTHESIS
dc.subjectSTATISTICAL-MODEL
dc.subjectNEUTRON-CAPTURE
dc.subjectND
dc.subjectP-PROCESS
dc.subjectTA-181
dc.titles-process branchings at Sm-151, Eu-154, and Dy-163en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1103/PhysRevC.64.015801
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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