Theoretical Description Of Beta-delayed Proton Emission Of Proton-rich sd- And pf- Shell Nuclei
| dc.contributor.author | LAM, Yi Hua | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | SMIRNOVA, Nadezda A | |
| dc.date.issued | 2017 | |
| dc.date.conference | 2016-09-11 | |
| dc.description.abstractEn | The study of β-delayed decay of nuclei near the proton drip line provides a powerful tool to understand the role of isospin-symmetry breaking in the structure of proton-rich nuclei. A β-delayed process involves first a β-decay of a precursor, with a large superallowed branch populating the isobaric analogue state (IAS), followed by emission of charged particles (protons, diprotons, alpha particles, clusters) or gamma radiation. The typical Q value systematics of these decays is such that the second-stage proton (or multi-particle) emission from the IAS is isospin-forbidden, whereas decay from Gamow-Teller populated states is consistent with the isospin-symmetry limit. The experimental data on isospin-forbidden proton-emission branching ratios provides a stringent test for charge-dependent terms of the nuclear Hamiltonian. In this contribution, we present a shell-model study of the partial-decay schemes of some recently measured very neutron deficient silicone isotopes, e.g., 23Si, 24Si, 25Si, as well as a p f-shell precursor, 53Ni. We use a microscopic isospin-nonconserving (INC) Hamiltonian which allows us to account for the isospin-symmetry breaking consistently in all physics processes involved in the whole β-delayed decay scheme, namely, β-decay, proton emission and electromagnetic de-excitation. Our shell-model results successfully, though not fully, match with the key features of these experimental partial-decay schemes. | |
| dc.language.iso | en | |
| dc.source.title | PoS | |
| dc.title.en | Theoretical Description Of Beta-delayed Proton Emission Of Proton-rich sd- And pf- Shell Nuclei | |
| dc.type | Communication dans un congrès | |
| dc.identifier.doi | 10.22323/1.281.0042 | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Théorique [nucl-th] | |
| bordeaux.page | 042 | |
| bordeaux.volume | INPC2016 | |
| bordeaux.country | AU | |
| bordeaux.title.proceeding | PoS | |
| bordeaux.conference.city | Adelaide | |
| bordeaux.peerReviewed | non | |
| hal.identifier | hal-01555075 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | oui | |
| hal.conference.end | 2016-09-16 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01555075v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=PoS&rft.date=2017&rft.volume=INPC2016&rft.spage=042&rft.epage=042&rft.au=LAM,%20Yi%20Hua&SMIRNOVA,%20Nadezda%20A&rft.genre=unknown |
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