Show simple item record

dc.contributor.authorRauscher, T.
dc.date.accessioned2014-11-13T11:44:30Z
dc.date.available2014-11-13T11:44:30Z
dc.date.issued2011-01
dc.identifier.citationRauscher , T 2011 , Origin of the p-Nuclei in Explosive Nucleosynthesis . in Procs 11th Symposium on Nuclei in the Cosmos (NIC XI) . , 059 , Proceedings of Science , SISSA , 11th Symposium on Nuclei in the Cosmos , Heidelberg , Germany , 19/07/10 . < http://pos.sissa.it/archive/conferences/100/059/NIC%20XI_059.pdf >
dc.identifier.citationconference
dc.identifier.issn1824-8039
dc.identifier.otherPURE: 1687484
dc.identifier.otherPURE UUID: de5c4d78-f24e-4435-9bfa-39fe77aa8f03
dc.identifier.urihttp://hdl.handle.net/2299/14761
dc.descriptionCopyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
dc.description.abstractA number of naturally occurring, proton-rich nuclides (the p-nuclei) cannot be made in the s- and r-process. It has been found that massive stars can produce p-nuclei through photodisintegration of pre-existing intermediate and heavy nuclei. This so-called gamma-process requires sufficiently high temperatures and occurs in pre-explosive or explosive O/Ne burning, depending on the mass of the star. Although the gamma-process has been successful in producing a large range of p-nuclei, two mass regions remain problematic, A < 110 and 150 < A < 165, where a number of p-nuclei are severely underproduced. The origin of the problems is yet to be identified. A large number of unstable nuclei with only theoretically predicted reaction rates are included in the reaction network and thus the nuclear input may involve uncertainties. Deficiencies in charged-particle optical potentials at gamma-process temperatures have been found for nuclei at stability. On the other hand, the gamma-process conditions (temperature profiles, entropy of the O shell, seed composition) also sensitively depend on details of the stellar structure and evolution, as well as on the initial metallicity. Nevertheless, especially the deficient low-mass p-nuclei may call for an additional production process or site, such as production in (subChandrasekhar) type Ia supernovae. Also the (im)possibility of a synthesis in the rp- and nu-p-processes is discussed. Were this the case, the production of p-nuclei would be realized as a superposition of several different processes, not necessarily in the same site.en
dc.format.extent10
dc.language.isoeng
dc.publisherSISSA
dc.relation.ispartofProcs 11th Symposium on Nuclei in the Cosmos (NIC XI)
dc.relation.ispartofseriesProceedings of Science
dc.titleOrigin of the p-Nuclei in Explosive Nucleosynthesisen
dc.contributor.institutionCentre for Astrophysics Research
dc.identifier.urlhttp://pos.sissa.it/archive/conferences/100/059/NIC%20XI_059.pdf
rioxxterms.versionVoR
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record