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SUMMARY:Nuclear Polarizability: the Sleeping Beauty of Nuclear Physics - P
 rofessor Nico Orce\, University of Western Cape
DTSTART:20171208T103000Z
DTEND:20171208T120000Z
UID:TALK95716@talks.cam.ac.uk
CONTACT:Jo Boyle
DESCRIPTION:Despite the fact that carbon is produced in the core of massiv
 e stars through the fusion of three alpha particles into a resonance state
  at 7.654 MeV in 12C\, the so-called Hoyle state\, there is very little ex
 perimental evidence for clustering-forming structures in nuclei. Different
  state-of-the-art ab initio calculations have recently characterized the n
 uclear structure of the Hoyle state (see e.g.\, references [1\,3]). Howeve
 r\, discrepancies exist regarding the most likely geometrical configuratio
 n of the three alphas (e.g.\, bent-arm\, oblate triangular and others). Du
 ring this talk\, I will provide new experimental information on the nucler
  shape of 12C and ab initio calculations that indicate an increasing nucle
 ar polarizability with excitation energy. The nuclear polarizability is di
 rectly related to the total photo-absorption cross section and this enhanc
 ement may affect the way nuclei emits and absorbs radiation and discern am
 ong the different geometric configurations predicted by theoretical models
 . The elucidation of how nuclei fuse together could add fundamental ground
 s to the practical achievement of fusion energy. 
LOCATION:Department of Engineering - LT6
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