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Title

Two-proton capture on the 68Se nucleus with a new self-consistent cluster model

AuthorsHove, D.; Garrido, Eduardo CSIC ORCID; Jensen, A. S.; Sarriguren, Pedro CSIC ORCID; Fynbo, H. O. U.; Fedorov, D. V.; Zinner, N. T.
Advisor5 pags., 4 figs. --Open Access funded by Creative Commons Atribution Licence 4.0
Keywordsrp-Process
Mean-field
Three-body
Electric dissociation
Capture rate
Issue Date4-May-2018
PublisherElsevier
CitationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 782: 42-46 (2018)
AbstractWe investigate the two-proton capture reaction of the prominent rapid proton capture waiting point nucleus, Se, that produces the borromean nucleus Kr (Se68+p+p). We apply a recently formulated general model where the core nucleus, Se, is treated in the mean-field approximation and the three-body problem of the two valence protons and the core is solved exactly. We compare using two popular Skyrme interactions, SLy4 and SkM*. We calculate E2 electromagnetic two-proton dissociation and capture cross sections, and derive the temperature dependent capture rates. We vary the unknown 2 resonance energy without changing any of the structures computed self-consistently for both core and valence particles. We find rates increasing quickly with temperature below 2–4 GK after which we find rates varying by about a factor of two independent of 2 resonance energy. The capture mechanism is sequential through the f proton-core resonance, but the continuum background contributes significantly.
Publisher version (URL)https://doi.org/10.1016/j.physletb.2018.05.002
URIhttp://hdl.handle.net/10261/169815
DOIhttp://dx.doi.org/10.1016/j.physletb.2018.05.002
Identifiersdoi: 10.1016/j.physletb.2018.05.002
issn: 0370-2693
Appears in Collections:(CFMAC-IEM) Artículos
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