Structure of high-spin states in 100Pd

High-spin states of the neutron deficient 100Pd nucleus have been investigated via the 50Cr(58Ni, 4pα) and 70Zn(36S,6n) heavy-ion induced reactions. For the detection of evaporated particles and γ rays the Nordball array equipped with ancillary detectors and the Eurogam II detector system were utilized. By the use of in-beam spectroscopic methods 89 transitions belonging to 100Pd have been observed, 49 of which were identified for the first time. The level scheme has been extended up to Ex≈16 MeV excitation energy and I≈25ℏ. The experimental results were compared with the predictions of cranked shell model calculations. Maximal spin alignments were found in the (πg9/2)−412+(νd5/2,g7/23h11/2)13− and (πg9/2−3p1/2)11−(νd5/2,g7/23h11/2)13− configurations. Possible existence of octupole correlations is discussed on the basis of B(E1)/B(E2) values deduced for the decays of high-spin levels in the yrast negative-parity band.