Identification Of High-Spin States In Neutron-Rich Kr-88,Kr-90,Kr-92 And Se-86

Level schemes of even even neutron-rich Kr88-92 and Se-86 have been investigated by measuring triple-gamma coincidence data from the spontaneous fission of Cf-252 with the Gammasphere detector array. The level scheme of Kr-88 has been extended up to 7169 keV state. Several new excited states with new transitions have been identified in Kr-90,Kr-92 and Se-86. Spins and parities have been assigned to levels in these nuclei by following regional systematics and angular correlation measurements. The level structures of the N = 52,54, Se, Kr, and Sr isotopes are discussed.