%0 Journal Article %J Phys. Rev. C %D 2001 %T First measurements of g factors in the even Kr isotopes %A Mertzimekis, T. J. %A Benczer-Koller, N. %A Holden, J. %A Jakob, G. %A Kumbartzki, G. %A Speidel, K.-H. %A Ernst, R. %A Macchiavelli, A. %A McMahan, M. %A Phair, L. %A Maier-Komor, P. %A A. Pakou %A Vincent, S. %A Korten, W. %X The g factors of the 2+1 and 4+1 states in 78,80,82,84,86Kr have been measured for tne first time, using Coulomb excitation of isotopic Kr beams and the transient field technique. The measured g factors of 2+1 states in 78.80.82Kr are well described, in both magnitude and progression with neutron number, by the IBA-II model. Whereas the lighter isotopes show a dominant collective structure with g factor values close to Z/A, the large g(2-1) = 1.12(14) value of 86Kr, with its closed N = 50 shell, is unequivocally dominated by specific proton configurations. The g factor of the 2+1 state in 84Kr, with two holes in the Ig9/2 neutron orbit, reflects both proton and neutron components in the wave function. In addition, the lifetimes of several 2+1 and 4+1 states were remeasured by the Doppler shift attenuation method, yielding values which, in some cases, differ from those in the literature. %B Phys. Rev. C %C CEA Saclay, DAPNIA/SPhN, Gif-sur-Yvette F-91191, France %V 64 %P 243141–243147 %G eng %R 10.1103/PhysRevC.64.024314