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SUMMARY:New Vistas in Experimental Searches for Proton Radioactivity
DTSTART;VALUE=DATE-TIME:20110221T112000Z
DTEND;VALUE=DATE-TIME:20110221T120000Z
DTSTAMP;VALUE=DATE-TIME:20260316T154045Z
UID:indico-contribution-762-6162@indico.ific.uv.es
DESCRIPTION:Speakers: Philip J. Woods (University of Edinburgh)\nThe talk 
 will consider where we currently stand in terms of the exploration of one 
 proton radioactivity. Proton radioactivity provides a uniquely sensitive p
 robe of nuclear shape and shell structure beyond the proton drip-line. Thi
 s varied nuclear landscape in turn provides us  with a laboratory in which
  to explore the dramatic influence of shape and shell structure on the pro
 ton quantum tunneling probability. The talk will explore new experimental 
 approaches to the study of this fascinating phenomenon\, including the exp
 loration of new regions of the proton-drip-line\, and regions of shape co-
 existence\, where shape effects on tunneling would be probed in a uniquely
  sensitive manner.\n\nhttps://indico.ific.uv.es/event/349/contributions/61
 62/
LOCATION:Colegio Rector Peset
URL:https://indico.ific.uv.es/event/349/contributions/6162/
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SUMMARY:Studies of Two Proton radioactivity
DTSTART;VALUE=DATE-TIME:20110221T100000Z
DTEND;VALUE=DATE-TIME:20110221T104000Z
DTSTAMP;VALUE=DATE-TIME:20260316T154045Z
UID:indico-contribution-762-6160@indico.ific.uv.es
DESCRIPTION:Speakers: Ivan Mukha (Helholzzentrum Gesellschaft fur SchwerIo
 nenforschung (GSI))\nExtremely proton-rich nuclei with odd or even atomic 
 numbers were predicted by V. Goldansky in 1960\nto decay through one- or t
 wo-proton radioactivity\, respectively. Two-proton (2p) radioactivity\, a\
 nspontaneous decay of an atomic nucleus by emission of two protons\, is th
 e most recently discovered\nnuclear disintegration mode. It has first been
  reported for 45Fe in 2002 with a half-life of about 4 ms\,\nwhich is 1000
  times longer than the quasi-classical estimate of “di-proton” (or 2He
 ) cluster emission.\nFurther observations of 2p radioactivity in 19Mg\, 54
 Zn\, 48Ni\, 94mAg have confirmed unexpectedly large\nhalf-lives of 2p prec
 ursors thus indicating regular existence of long-lived nuclei beyond the p
 roton drip\nline. The experimental methods used to produce\, identify and 
 detect new nuclear species via their 2p\ndecay will be reviewed. The up-to
 -date theoretical understanding of specific observables accessible in\nthe
  2p decay measurements will be discussed with an emphasis on 2p-precursor'
 s nuclear structure.\n\nhttps://indico.ific.uv.es/event/349/contributions/
 6160/
LOCATION:Colegio Rector Peset
URL:https://indico.ific.uv.es/event/349/contributions/6160/
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BEGIN:VEVENT
SUMMARY:Structure of proton emitting nuclei
DTSTART;VALUE=DATE-TIME:20110221T104000Z
DTEND;VALUE=DATE-TIME:20110221T112000Z
DTSTAMP;VALUE=DATE-TIME:20260316T154045Z
UID:indico-contribution-762-6159@indico.ific.uv.es
DESCRIPTION:Speakers: E. Maglione (INFN Padova)\nWe have performed theoret
 ical calculations to describe the structure of nuclei at the extremes of s
 tability\, using the nonadiabatic quasiparticle approach.  We reproduce th
 e experimental half-life for proton radioactivity in 121Pr assuming J =7/2
 - as decaying state\, showing for the first time clear evidence for partia
 l rotation alignment in a proton emitting  nucleus1.\nRecent findings sugg
 est the departure from axial deformation in the region of proton emitting 
 nuclei. Our calculation for 145Tm2\, giving the energy spectra of parent a
 nd daughter nuclei\, half-life and fine structure\, confirmed a large tria
 xiality. Similarly\, we have studied  decay of  141Ho 3\,  the only known 
 nucleus for which fine structure in proton emission from both ground and i
 someric states was observed.  The interpretation of the data pointed out t
 o the breaking of axial symmetry in this emitter. \nThe present studies pr
 ovide new theoretical tools to access nuclear\nstructure properties far fr
 om the stability domain.\n\n1 M. C. Lopes\, E. Maglione\, L. S. Ferreira\,
  Phys. Lett.B 673(2009)15\n2 P. Arumugam\, L.S. Ferreira\, and E. Maglione
  Phys. Rev. C78(2008) 041305\n3 P. Arumugam\, L.S. Ferreira\, and E. Magli
 one Phys. Lett. B680(2009)443\n\nhttps://indico.ific.uv.es/event/349/contr
 ibutions/6159/
LOCATION:Colegio Rector Peset
URL:https://indico.ific.uv.es/event/349/contributions/6159/
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