University of
Notre Dame
College of
Science
Department of
Physics

 

Nuclear Seminar

 

Study of Beta-delayed Neutron Decay Near the Neutron Drip Line

 

Dr. Chandana Sumithrarachchi
Department of Chemistry & National Superconducting Cyclotron Lab
Michigan State University

*Thursday, March 1, 2007   10:45 a.m.   NSH 124
(Refreshments served prior to seminar in NSH 124)

 

The rapid change in the location of the neutron drip as one goes from carbon, to oxygen, to fluorine isotopes is still not understood.  Recently, it has been suggested that the traditional single particle shell structure changes significantly in approaching the drip line.  The study of nuclei in the region of the heaviest oxygen and fluorine isotopes can provide important information on the variation of nuclear shell structure leading to new magic numbers.  Very little spectroscopic information is available on these neutron-rich nuclei.  One way of exploring information on them is to combine the traditional study of the beta-delayed gamma-ray decay of exotic nuclei with beta-delayed neutron spectroscopy.  The first measurement of beta-delayed neutrons and gamma-rays from the decays of 22N and 23O has been performed at the NSCL (National Superconducting Cyclotron Laboratory).  The beta decay schemes of 22N and 23O will be presented and compared to shell model calculations.



*Note different day and time


All interested persons are cordially invited to attend.