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SUMMARY:New Experimental Approaches for Constraining Neutron Capture Cross
  Sections in Exotic Nuclei
DTSTART;VALUE=DATE-TIME:20210210T210000Z
DTEND;VALUE=DATE-TIME:20210210T213000Z
DTSTAMP;VALUE=DATE-TIME:20260518T114651Z
UID:indico-contribution-1783@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Dennis  Muecher  (University of Guelph)\nThe synthes
 is of heavy elements via the r-process involves extremely neutron-rich nuc
 lei. Compared to light nuclei\, our understanding of the properties of hea
 vy\, neutron-rich nuclei is sparse. The next-generation radioactive ion be
 am facilities\, like ARIEL (TRIUMF)\, FAIR (GSI)\, CARIBU(ANL) and FRIB wi
 ll offer unique possibilities to probe such nuclei. \n\nI will give an ove
 rview about our current and future nuclear astrophysics program with reacc
 elerated beams at TRIUMF.  The new TI-STAR silicon tracker detector\, unde
 r development at the University of Guelph and TRIUMF\, is designed for exp
 eriments with heavy\, exotic beams at the future ARIEL facility. TI-STAR c
 oupled to the TIGRESS array of HPGe detectors and the new EMMA recoil sepa
 rator will offer constraining neutron-capture rates in the A=130 key regio
 n of r-process nucleosynthesis. \n\nThe extraction of neutron capture rate
 s relies on a more model-independent determination of the nuclear level de
 nsity in heavy nuclei. I present the newly developed "Shape Method" and pr
 esent new data from an experiment at Argonne National Laboratory using the
  SuN Total Absorption Spectrometer. I show that we are able to extract a m
 odel-independent absolute partial nuclear level density for the short-live
 d unstable nucleus Kr-88\, for the first time. This is an important step t
 owards more reliable neutron capture rate data in exotic nuclei.  \nThis w
 ork has been done in collaboration with TRIUMF\, MSU\, ANL and the "Oslo" 
 group.\n\nhttps://nyx.physics.mcgill.ca/event/253/contributions/1783/
LOCATION:Virtual Meeting
URL:https://nyx.physics.mcgill.ca/event/253/contributions/1783/
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