The linear polarizations of y rays from the deexcitation of ' Pd and ' Pd following (heavy ion, xn) reactions were measured using a Compton polarimeter. Multipolarities for these y rays are tabulated and level schemes are given. Polarization measurements clearly show negative parity for two major quasirotational sidebands in both ' Pd and ' Pd.
NUCLEAR REACTIONSZr( C, 3n), &=47 MeV; 9 Zr( C, 3n), E=42 MeV.Linear polarization of Pd and 6Pd y rays measured.
We have studied states in~5 0 between 10.91and 13.02-MeV excitation as resonances in thẽ 4N(p, y)~O and~4N(P, P'y) reactions. Several new states are reported, and the elastic, inelastic, and y-ray partial widths are given for some of the levels. The levels are compared with corresponding levels in the mirror nucleus N. Of particular interest are the 2' and &+, T =2 states which should lie in this region. The results imply more mixing of these states in 0 with nearby 7 =2 levels than is observed in N. However, most of the T=g strength in 0
The low-lying level structure of Sb is studied through the observation of coincident y rays following the Sn(p, n) reaction using two Ge(Li) detectors. Thirteen 1024-channel coincidence y-ray spectra were obtained simultaneously in a PDP-7 computer by means of a two-parameter program. High-resolution singles spectra taken with a small-volume thinwindow Ge(Li) detector (full width at half maximum approximately 0.6 keV at 121 keV) were also helpf'ul in determining a level scheme for Sb. A (d,p) experiment was also performed in order to gain additional information. The information obtained from the (p, n) reaction was combined with existing~Sb(d, p) and~Sb(n, y) data in constructing a proposed level scheme for Sb.
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