Re-estimation of 180Ta nucleosynthesis in light of newly constrained reaction rates

Simple item page
dc.contributor.authorMalatji, K. L.en_ZA
dc.contributor.authorWiedeking, M.en_ZA
dc.contributor.authorGoriely, S.en_ZA
dc.contributor.authorBrits, C. P.en_ZA
dc.contributor.authorKheswa, B. V.en_ZA
dc.contributor.authorBello Garrote, F. L.en_ZA
dc.contributor.authorBleuel, D. L.en_ZA
dc.contributor.authorGiacoppo, F.en_ZA
dc.contributor.authorGorgen, A.en_ZA
dc.contributor.authorGuttormsen, M.en_ZA
dc.contributor.authorHadynska-Klek, K.en_ZA
dc.contributor.authorHagen, T. W.en_ZA
dc.contributor.authorIngeberg, V. W.en_ZA
dc.contributor.authorKlintefjord, M.en_ZA
dc.contributor.authorLarsen, A. C.en_ZA
dc.contributor.authorPapka, P.en_ZA
dc.contributor.authorRenstrom, T.en_ZA
dc.contributor.authorSahin, E.en_ZA
dc.contributor.authorSiem, S.en_ZA
dc.contributor.authorSiess, L.en_ZA
dc.contributor.authorTveten, G. M.en_ZA
dc.contributor.authorZeiser, F.en_ZA
dc.date.accessioned2021-10-26T06:42:04Z
dc.date.available2021-10-26T06:42:04Z
dc.date.issued2019-03-12
dc.descriptionCITATION: Malatji, K. L. et al. 2019. Re-estimation of 180Ta nucleosynthesis in light of newly constrained reaction rates. Physics Letters B, 791:403-408. doi:10.1016/j.physletb.2019.03.013
dc.descriptionThe original publication is available at https://www.sciencedirect.com/journal/physics-letters-b
dc.description.abstractRecent measurements of the nuclear level densities and γ-ray strength functions below the neutron thresholds in 180,181,182Ta are used as input in the nuclear reaction code TALYS. These experimental average quantities are utilized in the calculations of the 179,180,181Ta radiative neutron capture cross sections. From the latter, astrophysical Maxwellian-averaged (n, γ) cross sections (MACS) and reaction rates are extracted, which in turn are used in large astrophysical network calculations to probe the production mechanism of 180Ta. These calculations are performed for two scenarios, the s-process production of 180,181Ta in Asymptotic Giant Branch (AGB) stars and the p-process nucleosynthesis of 180Tamin Type-II supernovae. Based on the results from this work, the s-process in stellar evolution is considered negligible in the production of 180Tamwhereas 181Ta is partially produced by AGB stars. The new measurements strongly constrain the production and destruction rates of 180Tamat p-process temperatures and confirm significant production of nature’s rarest stable isotope 180Tamby the p-process.en_ZA
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S0370269319301674
dc.description.versionPublisher’s version
dc.format.extent6 pages
dc.identifier.citationMalatji, K. L. et al. 2019. Re-estimation of 180Ta nucleosynthesis in light of newly constrained reaction rates. Physics Letters B, 791:403-408. doi:10.1016/j.physletb.2019.03.013
dc.identifier.issn0370-2693 (print)
dc.identifier.otherdoi:10.1016/j.physletb.2019.03.013
dc.identifier.urihttp://hdl.handle.net/10019.1/123311
dc.language.isoen_ZAen_ZA
dc.publisherElsevier
dc.rights.holderAuthors retain rights
dc.subjectNeutrons -- Captureen_ZA
dc.subjectNuclear reactionsen_ZA
dc.subjectChemical kineticsen_ZA
dc.subjectTantalum -- Isotopesen_ZA
dc.subjectNucleosynthesisen_ZA
dc.subjectAstrophysicsen_ZA
dc.titleRe-estimation of 180Ta nucleosynthesis in light of newly constrained reaction ratesen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
malatji_reestimation_2019.pdf
Size:
568.4 KB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Physics)