Fast rotation of the N = Z nucleus Ar-36

Citation
Ce. Svensson et al., Fast rotation of the N = Z nucleus Ar-36, ACT PHY P B, 32(9), 2001, pp. 2413-2422
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
0587-4254 → ACNP
Volume
32
Issue
9
Year of publication
2001
Pages
2413 - 2422
Database
ISI
SICI code
0587-4254(200109)32:9<2413:FROTN=>2.0.ZU;2-Z
Abstract
A highly-deformed rotational band has been identified in the N = Z nucleus Ar-36. At high spin the band is observed to its presumed termination at I-p i = 16(+), while at low spin it has been firmly linked to previously known states in Ar-36. Spins, parities, and absolute excitation energies have thu s been determined throughout the band. Lifetime measurements establish a la rge low-spin quadrupole deformation (beta (2) = 0.46 +/- 0.03) and indicate a decreasing collectivity as the band termination is approached. With effe ctively complete spectroscopic information and a valence space large enough for significant collectivity to develop, yet small enough to be meaningful ly approached from the shell model perspective, this rotational band in Ar- 36 provides many exciting opportunities to test and compare complementary m odels of collective motion in nuclei.