Decay of 185Au: Sign of shape coexistence in 185Pt
| Autor: | C. Bourgeois, B. Roussière, J. Sauvage, P. Kilcher, M.G. Porquet |
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| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) |
| Rok vydání: | 1985 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics Parity (physics) Prolate spheroid [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences 7. Clean energy medicine.anatomical_structure 0103 physical sciences Quasiparticle medicine Atomic physics 010306 general physics Ground state Spectrograph Nucleus |
| Zdroj: | Nuclear Physics A Nuclear Physics A, Elsevier, 1985, 438, pp.93-111 |
| ISSN: | 0375-9474 |
| DOI: | 10.1016/0375-9474(85)90120-4 |
| Popis: | The decay of 185 Au has been studied on-line with mass-separated sources from the ISOCELE facility. Precise conversion-electron measurements have been performed with a 180° magnetic spectrograph. The level scheme of 185 Pt has been established, and the T 1 2 = 33 min isomeric state has been located at 103.2 keV with respect to the T 1 2 = 71 min ground state. Two highly converted transitions have been observed. The level scheme is discussed in the framework of an “axial-rotor + quasiparticle” approach: numerous states are interpreted assuming a prolate shape of the nucleus. Ten levels with low spin and negative parity ( I ⩽ 7 2 − ) decay mainly to the 1 2 − [521] band via strong M1 transitions and are not expected from the calculations performed with the prolate cores. The possibility of shape coexistence is discussed. |
| Databáze: | OpenAIRE |
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