Indentification of Excited States in the Tz=1 Nucleus 110Xe: Evidence for Enhanced Collectivity Near the N=Z=50 Double Shell Closure
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, 022501- p.Article in journal (Refereed) Published
Gamma-ray transitions have been identified for the first time in the extremely neutron-deficient (N=Z+2) nucleus Xe110, and the energies of the three lowest excited states in the ground-state band have been deduced. The results establish a breaking of the normal trend of increasing first excited 2+ and 4+ level energies as a function of the decreasing neutron number as the N=50 major shell gap is approached for the neutron-deficient Xe isotopes. This unusual feature is suggested to be an effect of enhanced collectivity, possibly arising from isoscalar n-p interactions becoming increasingly important close to the N=Z line.
Place, publisher, year, edition, pages
2007. Vol. 99, 022501- p.
Excited states; Gamma rays; Ground state; Isotopes; Molecular interactions; Neutrons
IdentifiersURN: urn:nbn:se:kth:diva-7353DOI: 10.1103/PhysRevLett.99.022501ISI: 000248021000016ScopusID: 2-s2.0-34547188159OAI: oai:DiVA.org:kth-7353DiVA: diva2:12349
QC 201008092007-06-252007-06-252010-11-16Bibliographically approved