Home | << 1 2 >> |
Record | |||||
---|---|---|---|---|---|
Author | Ralet, D. et al; Gadea, A.; Perez, R.M. | ||||
Title | Evidence of octupole-phonons at high spin in Pb-207<bold> </bold> | Type | Journal Article | ||
Year | 2019 | Publication | Physics Letters B | Abbreviated Journal | Phys. Lett. B |
Volume | 797 | Issue | Pages | 134797 - 6pp | |
Keywords | AGATA spectrometer; gamma-Ray tracking; VAMOS plus plus spectrometer; Plunger device; Nuclear deformation; Octupole phonon | ||||
Abstract | A lifetime measurement of the 19/2(-) state in Pb-207 has been performed using the Recoil Distance Doppler-Shift (RDDS) method. The nuclei of interest were produced in multi-nucleon transfer reactions induced by a Pb-208 beam impinging on a Mo-100 enriched target. The beam-like nuclei were detected<bold> </bold>and identified in terms of their atomic mass number in the VAMOS++ spectrometer while the prompt gamma rays were detected by the AGATA tracking array. The measured large reduced transition probability B(E3, 19/2(-) -> 13/2(+)) = 40(8) W.u. is the first indication of the octupole phonon at high spin in Pb-207. An analysis in terms of a particle-octupole-vibration coupling model indicates that the measured B(E3) value in Pb-207 is compatible with the contributions from single-phonon and single particle E3 as well as E3 strength arising from the double-octupole-phonon 6(+) state, all adding coherently. A crucial aspect of the coupling model, namely the strong mixing between single-hole and the phonon-hole states, is confirmed in a realistic shell-model calculation. | ||||
Address | [Ralet, D.; Georgiev, G.; Ljungvall, J.; Dupont, E.; Konstantinopoulos, T.; Korichi, A.; Lozeva, R.] Univ Paris Saclay, Univ Paris Sud, CSNSM, CNRS IN2P3, F-91405 Orsay, France, Email: clement@ganil.fr | ||||
Corporate Author | Thesis | ||||
Publisher | Elsevier | Place of Publication | Editor | ||
Language | English | Summary Language | Original Title | ||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0370-2693 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | WOS:000488071200015 | Approved | no | ||
Is ISI | yes | International Collaboration | yes | ||
Call Number | IFIC @ pastor @ | Serial | 4163 | ||
Permanent link to this record |