6533b861fe1ef96bd12c59c7
RESEARCH PRODUCT
The endpoint of the rp-process
Joachim GörresJ.f. RembgesThomas RauscherH. HerndlB. A. BrownFriedrich-karl ThielemannP. MöllerAni AprahamianL. Van WormerHendrik SchatzB. PfeifferMichael WiescherKarl-ludwig Kratzsubject
Reaction rateNuclear physicsPhysicsNuclear reactionNuclear and High Energy PhysicsSolar SystemAbundance (chemistry)NucleosynthesisAstrophysicsrp-processTime structuredescription
Abstract The endpoint of rp-process nucleosynthesis in X-ray bursts determines the fuel consumption, the energy generation, and the abundance pattern of the produced nuclei. To investigate the time structure of rp-process nucleosynthesis, we used a nuclear reaction network including nuclei from H to Sn. We found that if 2p-capture reactions are included, the synthesis of nuclei heavier than Kr proceeds faster than previously thought. Therefore, in most X-ray bursts large amounts of nuclei in the A=80–100 region are expected to be produced. With an escape factor of about 1%, X-ray bursts could account for the large observed solar system abundances of the light p-nuclei like 92 Mo and 96 Ru that cannot be produced sufficiently in other p-process scenarios.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-08-01 |