Half lives were determined for 10 transitions in low-lying energy levels, excited by slow neutron capture, in Mn/sup 5//sup 6/, Rh/sup 1//sup 0// sup 4/, Cu/sup 6//sup 4/, Al/sup 2//sup 8/, and I/sup 1//sup 2//sup 8/. Internal ma gnetic fields at the nuclei of Fe/sup 5//sup 7/ and Sn/sup 1//sup 1//sup 9/ in various magnetic media were studied with the Mossbauer effect, and their nuclear Zeeman effects were snalyzed. Energy spectra, angular distributions, and reduced widths were obtained for (d,t) reactions on Fe/sup 5//sup 4/, Fe/sup 5//sup 8/, Ni/sup 5//sup 8/, Ni/sup 6//sup 0/, and Ni/sup 6/>s1< s, and the data used to provide information on the ground-state wave functions of these isotopes. The beta and gamma radiations associated with Er/sup 1//sup 7//sup 2/ decay were measured and a decay scheme proposed for Er/sup 1//sup 7//sup 2/. The level structure of F/sup 2//sup 0/ at 1 to 150 kev above the neutron binding energy was studied by the F/sup 1//sup 9/(n,n)F/sup 1//sup 9/ ess. The region around 100 kev was found to contain a cluster of levels. A polystyrene film was prepared with a thickness of 530 A and its vacuum ultraviolet spectrum determined in the range 1100 to 2300 …

Preliminary results and data are given for eight expenimental and theoretical nuclear physics projects under investigation. Those projects not reported are listed separately with a reference to the last issue in which each appeared. Separate abstracts were prepared for the eight activities. (For preceding period see ANL-6214.) (W.D.M.)

Informal reports are presented on experimental nuclear physics, mass spectroscopy, and crystallography. Each individual project reports about once in 3 months. Those not reported in a particular issue are listed separately in the table of contents with a reference to the last issue in which each appeared. (For preceding period see ANL6164.) (W.D.M.)