Abstract
The structure of collective bands in 74,76Kr is studied withinthe framework of the deformed configuration mixing shell model basedon Hartree-Fock states. The active single-particle orbits are 1p3/2,0f5/2, 1p1/2 and 0g9/2 with 56Ni as the inert core.A modified Kuo interaction has been used for the above configurationspace. The 74Kr nucleus is found to be the most deformed nucleusamong the krypton isotopes which is in agreement with experiment. Thedeformation is found to decrease forthe 76Kr isotope. The calculatedpositive- and negative-parity bands agree quite well with the experimentforboth the nuclei.A number of excited bands is also predicted.We have also calculated B(E2) valuesand compared them with available experimental data. The structure of thestrongly coupled band built on K = 4( + ) in 76Kr is alsostudied.
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