Show simple item record

dc.contributor.authorMocelj, D.
dc.contributor.authorRauscher, T.
dc.contributor.authorMartinez-Pinedo, G.
dc.contributor.authorLanganke, K.
dc.contributor.authorPacearescu, L.
dc.contributor.authorFaessler, A.
dc.contributor.authorThielemann, Friedrich-Karl
dc.contributor.authorAlhassid, Y.
dc.date.accessioned2013-06-20T11:15:46Z
dc.date.available2013-06-20T11:15:46Z
dc.date.issued2007-04
dc.identifier.citationMocelj , D , Rauscher , T , Martinez-Pinedo , G , Langanke , K , Pacearescu , L , Faessler , A , Thielemann , F-K & Alhassid , Y 2007 , ' Large-scale prediction of the parity distribution in the nuclear level density and application to astrophysical reaction rates ' , Physical Review C , vol. 75 , no. 4 , 045805 . https://doi.org/10.1103/PhysRevC.75.045805
dc.identifier.issn2469-9985
dc.identifier.otherPURE: 1624259
dc.identifier.otherPURE UUID: f7b12ee0-3a50-4bb9-9850-1bd37b4b7bf3
dc.identifier.otherWOS: 000246076400056
dc.identifier.otherScopus: 34247325185
dc.identifier.urihttp://hdl.handle.net/2299/10895
dc.description.abstractA generalized method to calculate the excitation-energy dependent parity ratio in the nuclear level density is presented, using the assumption of Poisson distributed independent quasi particles combined with BCS occupation numbers. It is found that it is crucial to employ a sufficiently large model space to allow excitations both from low-lying shells and to higher shells beyond a single major shell. Parity ratios are only found to equilibrate above at least 5-10 MeV of excitation energy. Furthermore, an overshooting effect close to major shells is found where the parity opposite to the ground state parity may dominate across a range of several MeV before the parity ratio finally equilibrates. The method is suited for large-scale calculations as needed, for example, in astrophysical applications. Parity distributions were computed for all nuclei from the proton dripline to the neutron dripline and from Ne up to Bi. These results were then used to recalculate astrophysical reaction rates in a Hauser-Feshbach statistical model. Although certain transitions can be considerably enhanced or suppressed, the impact on astrophysically relevant reactions remains limited, mainly due to the thermal population of target states in stellar reaction rates.en
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofPhysical Review C
dc.subjectMONTE-CARLO
dc.subjectSTATISTICAL-MODEL CALCULATIONS
dc.subjectR-PROCESS
dc.subjectPROCESS NUCLEOSYNTHESIS
dc.subjectSHELL-MODEL
dc.subjectRESONANCE REGION
dc.subjectIRON-REGION
dc.subjectCROSS-SECTION
dc.subjectRADIATIVE CAPTURE
dc.subjectNEUTRON CAPTURES
dc.titleLarge-scale prediction of the parity distribution in the nuclear level density and application to astrophysical reaction ratesen
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.versionSMUR
rioxxterms.versionofrecordhttps://doi.org/10.1103/PhysRevC.75.045805
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record