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Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities
We report on the β-delayed neutron emission probability (P1n) measurements of the Ga82,83,84 (N=51,52,53) precursors performed in one single experiment using the He3 neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three A=82,83, and 84 Ga precursors point towards...
| Autores principales: | , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevC.95.054320 http://cds.cern.ch/record/2270105 |
| _version_ | 1780954847944638464 |
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| author | Verney, D Testov, D Ibrahim, F Penionzhkevich, Yu Roussière, B Smirnov, V Didierjean, F Flanagan, K Franchoo, S Kuznetsova, E Li, R Marsh, B Matea, I Pai, H Sokol, E Stefan, I Suzuki, D |
| author_facet | Verney, D Testov, D Ibrahim, F Penionzhkevich, Yu Roussière, B Smirnov, V Didierjean, F Flanagan, K Franchoo, S Kuznetsova, E Li, R Marsh, B Matea, I Pai, H Sokol, E Stefan, I Suzuki, D |
| author_sort | Verney, D |
| collection | CERN |
| description | We report on the β-delayed neutron emission probability (P1n) measurements of the Ga82,83,84 (N=51,52,53) precursors performed in one single experiment using the He3 neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three A=82,83, and 84 Ga precursors point towards a sizable P1n staggering in the N=50 region, similar to the one already observed just after the N=28 shell closure in the K isotopes chain, hinting at a similar mechanism. We will discuss the possible microscopic origin of this behavior, i.e., the existence in the light N=51 isotones of low-lying components of the so called pygmy Gamow-Teller resonance, already well established at Z=36, and persisting toward Ni79. |
| id | oai-inspirehep.net-1601694 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2017 |
| record_format | invenio |
| spelling | oai-inspirehep.net-16016942020-05-15T15:32:17Zdoi:10.1103/PhysRevC.95.054320http://cds.cern.ch/record/2270105engVerney, DTestov, DIbrahim, FPenionzhkevich, YuRoussière, BSmirnov, VDidierjean, FFlanagan, KFranchoo, SKuznetsova, ELi, RMarsh, BMatea, IPai, HSokol, EStefan, ISuzuki, DPygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilitiesNuclear Physics - ExperimentWe report on the β-delayed neutron emission probability (P1n) measurements of the Ga82,83,84 (N=51,52,53) precursors performed in one single experiment using the He3 neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three A=82,83, and 84 Ga precursors point towards a sizable P1n staggering in the N=50 region, similar to the one already observed just after the N=28 shell closure in the K isotopes chain, hinting at a similar mechanism. We will discuss the possible microscopic origin of this behavior, i.e., the existence in the light N=51 isotones of low-lying components of the so called pygmy Gamow-Teller resonance, already well established at Z=36, and persisting toward Ni79.oai:inspirehep.net:16016942017 |
| spellingShingle | Nuclear Physics - Experiment Verney, D Testov, D Ibrahim, F Penionzhkevich, Yu Roussière, B Smirnov, V Didierjean, F Flanagan, K Franchoo, S Kuznetsova, E Li, R Marsh, B Matea, I Pai, H Sokol, E Stefan, I Suzuki, D Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title | Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title_full | Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title_fullStr | Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title_full_unstemmed | Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title_short | Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities |
| title_sort | pygmy gamow-teller resonance in the n=50 region: new evidence from staggering of β -delayed neutron-emission probabilities |
| topic | Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1103/PhysRevC.95.054320 http://cds.cern.ch/record/2270105 |
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