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dc.contributor.authorHalasz, Z.
dc.contributor.authorGyuerky, Gy.
dc.contributor.authorFarkas, Judit
dc.contributor.authorFueloep, Zs.
dc.contributor.authorSzuecs, T.
dc.contributor.authorSomorjai, E.
dc.contributor.authorRauscher, T.
dc.date.accessioned2013-04-16T08:29:47Z
dc.date.available2013-04-16T08:29:47Z
dc.date.issued2012-02-17
dc.identifier.citationHalasz , Z , Gyuerky , G , Farkas , J , Fueloep , Z , Szuecs , T , Somorjai , E & Rauscher , T 2012 , ' Investigation of alpha-induced reactions on Ba-130 and Ba-132 and their importance for the synthesis of heavy p nuclei ' , Physical Review C , vol. 85 , no. 2 , 025804 . https://doi.org/10.1103/PhysRevC.85.025804
dc.identifier.issn2469-9985
dc.identifier.otherPURE: 1611029
dc.identifier.otherPURE UUID: f43b48a0-9513-4d5e-9a52-841ea30367af
dc.identifier.otherWOS: 000300420800005
dc.identifier.otherScopus: 84857559041
dc.identifier.urihttp://hdl.handle.net/2299/10427
dc.description.abstractCaptures of a particles on the proton-richest barium isotope, Ba-130, have been studied in order to provide cross-section data for the modeling of the astrophysical gamma process. The cross sections of the Ba-130(alpha,gamma)Ce-134 and Ba-130(alpha, n)Ce-133 reactions have been measured with the activation technique in the center-of mass energy range between 11.6 and 16 MeV, close above the astrophysically relevant energies. As a side result, the cross section of the Ba-132(alpha, n)Ce-135 reaction has also been measured. The results are compared with the prediction of statistical model calculations, using different input parameters such as alpha + nucleus optical potentials. It is found that the (a, n) data can be reproduced by employing the standard a + nucleus optical potential widely used in astrophysical applications. Assuming its validity also in the astrophysically relevant energy window, we present new stellar reaction rates for Ba-130(alpha,gamma)Ce-134 and Ba-132(alpha,gamma)Ce-136 and their inverse reactions calculated with the SMARAGD statistical model code. The highly increased Ce-136(gamma, alpha)Ba-132 rate implies that the p nucleus Ba-130 cannot directly receive contributions from the Ce isotopic chain. Further measurements are required to better constrain this result.en
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofPhysical Review C
dc.rightsOpen
dc.subjectSTATISTICAL-MODEL CALCULATIONS
dc.subjectCROSS-SECTIONS
dc.subjectSTELLAR
dc.subjectASTROPHYSICAL REACTION-RATES
dc.subjectS-PROCESS
dc.subjectNUCLEOSYNTHESIS
dc.subjectDATA SHEETS
dc.titleInvestigation of alpha-induced reactions on Ba-130 and Ba-132 and their importance for the synthesis of heavy p nucleien
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2012-02-17
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1103/PhysRevC.85.025804
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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