Transition from direct to sequential two-proton decay in s–d shell nuclei
The transition between different mechanisms of two-proton decay in exotic nuclei and the governing physical conditions are generally studied. To perform this large-scale survey, the direct-decay model, which is widely used, was improved by generalizing the semi-analytical approaches used before. The...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316305299 |
| _version_ | 1818920568001396736 |
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| author | T.A. Golubkova X.-D. Xu L.V. Grigorenko I.G. Mukha C. Scheidenberger M.V. Zhukov |
| author_facet | T.A. Golubkova X.-D. Xu L.V. Grigorenko I.G. Mukha C. Scheidenberger M.V. Zhukov |
| author_sort | T.A. Golubkova |
| collection | DOAJ |
| description | The transition between different mechanisms of two-proton decay in exotic nuclei and the governing physical conditions are generally studied. To perform this large-scale survey, the direct-decay model, which is widely used, was improved by generalizing the semi-analytical approaches used before. The improved model provides a flawless phenomenological description of three-body correlations in 2p decays, as is demonstrated by several examples of decays of low-lying states in 16Ne. Different transition mechanisms are shown to occur beyond the proton dripline for s–d shell nuclei. It is found that the transition dynamics of 2p-emitters allows the extraction of the width of the ground-state resonance of the core+p subsystem. The practical application of the method is illustrated by determining properties of the 14F ground state derived from the Ne15→O13+2p decay data, and of the 29Cl ground state derived from the Ar30→S28+2p decay data. Keywords: Dripline s–d shell nuclei, One-proton, two-proton decay, Two-proton emission mechanisms, Transitions between different modes of two-proton emission, Two-proton decays of 15Ne and 30Ar |
| first_indexed | 2024-12-20T01:23:49Z |
| format | Article |
| id | doaj.art-7da2ec4e6c5b4fa28646f8e0a03abd34 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-20T01:23:49Z |
| publishDate | 2016-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-7da2ec4e6c5b4fa28646f8e0a03abd342022-12-21T19:58:19ZengElsevierPhysics Letters B0370-26932016-11-01762263270Transition from direct to sequential two-proton decay in s–d shell nucleiT.A. Golubkova0X.-D. Xu1L.V. Grigorenko2I.G. Mukha3C. Scheidenberger4M.V. Zhukov5Advanced Educational and Scientific Center, Moscow State University, Kremenchugskaya 11, 121357 Moscow, RussiaII. Physikalisches Institut, Justus-Liebig University, 35392 Giessen, Germany; GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany; School of Physics and Nuclear Energy Engineering, Beihang University, 100191 Beijing, ChinaFlerov Laboratory of Nuclear Reactions, JINR, 141980 Dubna, Russia; National Research Nuclear University “MEPhI”, Kashirskoye shosse 31, 115409 Moscow, Russia; National Research Centre “Kurchatov Institute”, Kurchatov sq. 1, 123182 Moscow, Russia; Corresponding author.GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany; National Research Centre “Kurchatov Institute”, Kurchatov sq. 1, 123182 Moscow, RussiaII. Physikalisches Institut, Justus-Liebig University, 35392 Giessen, Germany; GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, GermanyDepartment of Physics, Chalmers University of Technology, S-41296 Göteborg, SwedenThe transition between different mechanisms of two-proton decay in exotic nuclei and the governing physical conditions are generally studied. To perform this large-scale survey, the direct-decay model, which is widely used, was improved by generalizing the semi-analytical approaches used before. The improved model provides a flawless phenomenological description of three-body correlations in 2p decays, as is demonstrated by several examples of decays of low-lying states in 16Ne. Different transition mechanisms are shown to occur beyond the proton dripline for s–d shell nuclei. It is found that the transition dynamics of 2p-emitters allows the extraction of the width of the ground-state resonance of the core+p subsystem. The practical application of the method is illustrated by determining properties of the 14F ground state derived from the Ne15→O13+2p decay data, and of the 29Cl ground state derived from the Ar30→S28+2p decay data. Keywords: Dripline s–d shell nuclei, One-proton, two-proton decay, Two-proton emission mechanisms, Transitions between different modes of two-proton emission, Two-proton decays of 15Ne and 30Arhttp://www.sciencedirect.com/science/article/pii/S0370269316305299 |
| spellingShingle | T.A. Golubkova X.-D. Xu L.V. Grigorenko I.G. Mukha C. Scheidenberger M.V. Zhukov Transition from direct to sequential two-proton decay in s–d shell nuclei Physics Letters B |
| title | Transition from direct to sequential two-proton decay in s–d shell nuclei |
| title_full | Transition from direct to sequential two-proton decay in s–d shell nuclei |
| title_fullStr | Transition from direct to sequential two-proton decay in s–d shell nuclei |
| title_full_unstemmed | Transition from direct to sequential two-proton decay in s–d shell nuclei |
| title_short | Transition from direct to sequential two-proton decay in s–d shell nuclei |
| title_sort | transition from direct to sequential two proton decay in s d shell nuclei |
| url | http://www.sciencedirect.com/science/article/pii/S0370269316305299 |
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