Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-04-03
Acta Phys.Polon.B32:2413-2422,2001
Physics
Nuclear Physics
Nuclear Theory
Invited talk at "High Spin Physics 2001", see http://www.fuw.edu.pl/~hs2001/, to be published in Acta Physica Polonica B
Scientific paper
A highly-deformed rotational band has been identified in the N=Z nucleus 36Ar. At high spin the band is observed to its presumed termination at I=16+, while at low spin it has been firmly linked to previously known states in 36Ar. Spins, parities, and absolute excitation energies have thus been determined throughout the band. Lifetime measurements establish a large low-spin quadrupole deformation (beta_2=0.46+-0.03) and indicate a decreasing collectivity as the band termination is approached. With effectively complete spectroscopic information and a valence space large enough for significant collectivity to develop, yet small enough to be meaningfully approached from the shell model perspective, this rotational band in 36Ar provides many exciting opportunities to test and compare complementary models of collective motion in nuclei.
Aberg Sofia
Appelbe D. E.
Austin R. A. E.
Baktash Cyrus
Ball Gordon C.
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