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SUMMARY:CNS + RIBF NP Seminar #345
DTSTART:20260616T043000Z
DTEND:20260616T063000Z
DTSTAMP:20260617T090200Z
UID:indico-event-5678@indico2.riken.jp
DESCRIPTION:Speakers: Adrian Montes Plaza (CNS\, University of Tokyo)\n\n
   Place: Nishina Hall (hybrid Zoom)  Date: Jun16 (Tue) 13:30 - 15:30  S
 peaker: Dr. Adrian Montes Plaza (CNS\, UT)------------Title: Triple shape
  coexistence in neutron-deficient Pb isotopes\nAbstract: Shape coexistenc
 e is a rising phenomenon that has become global within the nuclear chart o
 ver the past decades. In the vicinity of the neutron mid-shell N=104 lead 
 region\, collective intruder configurations give rise to oblate and prolat
 e deformations that compete with the sphericity governing the ground state
 s. However\, the prediction of this phenomenon is still a great challenge 
 for state-of-the-art theoretical calculations.In this research\, simultane
 ous gamma-ray and conversion-electron spectroscopy was combined with lifet
 ime measurements in order to address the shape evolution near Pb-190. The 
 nuclei of interest were produced via fusion-evaporation reactions during t
 wo separate experiments that were performed in the Accelerator Laboratory 
 of the University of Jyväskylä (Finland). The combined analysis on Pb-19
 0 led to report\, for the first time\, the direct measurement of three dif
 ferent deformations near the ground state in an atomic nucleus. In this se
 minar\, neighbouring odd-mass Pb-189 and Pb-191 isotopes will also be disc
 ussed\, for which a coherent picture based on the particle-core coupling s
 cheme has been proposed.\n\nhttps://indico2.riken.jp/event/5678/
LOCATION:Nishina Hall
URL:https://indico2.riken.jp/event/5678/
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