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New magnetic moments presented here allow stringent tests of the truncated shell model calculations performed in the region below the N = 50 neutron shell. The experimental g-factors for selected medium-spin yrast states in Mo-90 were determined via the IMPAD technique using the (Ni(Cl,3p))-Ni-58-Cl-35 reaction. The results of g(5-, 2549 keV) = +1.10 +/- 0.28, g(11-, 4842 keV) = +0.42 +/- 0.13 and g(12+, 4556 keV) = +0.50 +/- 0.06 are used to show the that (g9/2,p1/2) configuration space with respect to a Sr-88 core is a rather successful truncation for the effective interactions considered but some shortcomings are exposed.

The gamma-decay of excited states in the neutron deficient isotopes Tc-87 and Tc-88 has been observed for the first time. The fusion-evaporation reactions Ni-58(S-32, p2n)Tc-87 and Ni-58(S-32, pn)Tc-88 at 110 MeV, Ca-40(Cr-50, p2n)Tc-87 and Ca-40(Cr-50, pn)Tc-88 at 170 MeV and Ni-58(Ar-36, alpha-pn)Tc-88 at 145 MeV beam energy were used. Unambiguous identification of these nuclei which are populated with less than 1 mb cross section was achieved with coincidences between the gamma-radiation and the evaporation residues detected in a recoil mass separator. From gamma-gamma-coincidence data, a decay scheme of 11 transitions was constructed for Tc-88, the ground state of which is suggested to have I-pi = 7- or 8+. Two transitions identified in Tc-87 follow the pattern of a g9/2 one-quasiparticle band. (Less)

High-spin states in 70,72Se have been extended up to spin 14+ and 28+, respectively. The yrast bands in both nuclei exhibit a very regular rotational pattern up to the highest spins observed, with no indication of band crossings above hw approximately=0.5 MeV. According to deformed shell modeling calculations the regular yrast structures can be associated with aligned configurations involving g9/2 quasiparticles.