Non-collective high-spin states in 148Dy

The high-spin states in 148Dy(Z = 66, N = 82) were produced via the reaction 112Cd(Pb-backed)(40Ar,4n) at E/sub lab/ = 175 MeV, at the 88-inch Cyclotron at Lawrence Berkeley Laboratory. The data were collected with an array of 12 Compton-suppressed pure Ge detectors, and sorted in the E/sub γ/XE/sub γ/, 20-coincidence matrix format for prompt and delayed gates placed on the RF-Ge TAC. A Ge-Ge TAC was also recorded, thus giving one distribution of time intervals elapsed between detections of any given two coincident γ-rays. The data were also sorted in the RF-Ge TAC X E/sub γ/, Ge-Ge TAC X E/sub γ/, (00, 900), (00, 00) and (900, 900) formats, where the last three gave information about the angular correlations. Methods for placing gates on various transitions above and below the 480 nsec isomer at 10+ as well as for calculating transition intensities and their associated errors are given. Calculations of angular correlations for multiple γ-ray cascades, assuming non-zero-width distributions in m-states for some given spin state, were done and compared to experimental values