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26 April 2024

» pubmed » pmid11909351

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Quadrupole moment of the 11(-) intruder isomer in 196Pb and its implications for the 16(-) shears band head
K Vyvey ; S Chmel ; G Neyens ; H Hübel ; D L Balabanski ; D Borremans ; N Coulier ; R Coussement ; G Georgiev ; N Nenoff ; S Pancholi ; D Rossbach ; R Schwengner ; S Teughels ; S Frauendorf ;
Date:	11 Mar 2002
Journal:	Phys Rev Lett, 88 (10), 102502
Abstract:	The quadrupole moment of the 11(-) isomer in 196Pb has been measured by the level mixing spectroscopy method. This state has a pi(3s(-2)(1/2)1h(9/2)1i(13/2))11(-) configuration which is involved in most of the shears band heads in the Pb region. The first directly measured value of Q(s)(11(-)) = (-)3.41(66) b, coupled to the previously known quadrupole moment of the nu(1i(-2)(13/2))12(+) isomer allows us to estimate the quadrupole moment of the 16(-) shears band head as Q(s)(16(-)) = -0.32(10) b. The experimental values are compared to tilted axis cranking calculations, giving insight into the validity of the additivity approach to couple quadrupole moments and on the amount of deformation in the shears bands.
Source:	PubMed, pmid11909351
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