dc.contributor.author | Dillmann, I. | |
dc.contributor.author | Heil, M. | |
dc.contributor.author | Kappeler, F. | |
dc.contributor.author | Rauscher, T. | |
dc.contributor.author | Thielemann, Friedrich-Karl | |
dc.date.accessioned | 2013-04-12T11:47:24Z | |
dc.date.available | 2013-04-12T11:47:24Z | |
dc.date.issued | 2006-01 | |
dc.identifier.citation | Dillmann , I , Heil , M , Kappeler , F , Rauscher , T & Thielemann , F-K 2006 , ' Experimental (n,gamma) cross sections of the p-process nuclei Se-74 and Sr-84 ' , Physical Review C (nuclear physics) , vol. 73 , no. 1 , 015803 . https://doi.org/10.1103/PhysRevC.73.015803 | |
dc.identifier.issn | 2469-9985 | |
dc.identifier.uri | http://hdl.handle.net/2299/10396 | |
dc.description.abstract | The nucleosynthesis of elements beyond iron is dominated by the s and r processes. However, a small amount of stable isotopes on the proton-rich side cannot be made by neutron capture and are thought to be produced by photodisintegration reactions on existing seed nuclei in the so-called "p process." So far most of the p-process reactions are not yet accessible by experimental techniques and have to be inferred from statistical Hauser-Feshbach model calculations. The parametrization of these models has to be constrained by measurements on stable proton-rich nuclei. A series of (n,gamma) activation measurements, related by detailed balance to the respective photodisintegrations, were carried out at the Karlsruhe Van de Graaff accelerator using the Li-7(p,n)Be-7 source for simulating a Maxwellian neutron distribution of kT = 25 keV. First results for the experimental (n,gamma) cross sections of the light p nuclei Se-74 and Sr-84 are reported. These experimental values were used for an extrapolation to the Maxwellian averaged cross section at 30 keV, (30), yielding 271 +/- 15 mb for Se-74, and 300 +/- 17 mb for the total capture cross section of Sr-84. The partial cross section to the isomer in Sr-85 was found to be 190 +/- 10 mb. | en |
dc.format.extent | 10 | |
dc.format.extent | 280682 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review C (nuclear physics) | |
dc.subject | GAMMA-PROCESS | |
dc.subject | STARS | |
dc.subject | ISOTOPES | |
dc.subject | STATISTICAL-MODEL CALCULATIONS | |
dc.subject | ENERGIES | |
dc.subject | RELEVANT | |
dc.subject | ELEMENTS | |
dc.subject | ASTROPHYSICAL REACTION-RATES | |
dc.subject | NUCLEOSYNTHESIS | |
dc.title | Experimental (n,gamma) cross sections of the p-process nuclei Se-74 and Sr-84 | en |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1103/PhysRevC.73.015803 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |