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27 April 2024

» pubmed » pmid15903911

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B(E2) upward arrow measurements for radioactive neutron-rich ge isotopes: reaching the N=50 closed shell
E Padilla-Rodal ; A Galindo-Uribarri ; C Baktash ; J C Batchelder ; J R Beene ; R Bijker ; B A Brown ; O Castaños ; B Fuentes ; J Gomez del Campo ; P A Hausladen ; Y Larochelle ; A F Lisetskiy ; P E Mueller ; D C Radford ; D W Stracener ; J P Urrego ; R L Varner ; C-H Yu ;
Date:	1 Apr 2005
Journal:	Phys Rev Lett, 94 (12), 122501
Abstract:	The B(E2;0(+)(1)-->2(+)(1)) values for the radioactive neutron-rich germanium isotopes (78,80)Ge and the closed neutron shell nucleus 82Ge were measured at the HRIBF using Coulomb excitation in inverse kinematics. These data allow a study of the systematic trend between the subshell closures at N=40 and 50. The B(E2) behavior approaching N=50 is similar to the trend observed for heavier isotopic chains. A comparison of the experimental results with a shell model calculation demonstrates persistence of the N=50 shell gap and a strong sensitivity of the B(E2) values to the effective interaction.
Source:	PubMed, pmid15903911
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