Neutral hyperons produced by 5-Bev The effects of /sup -/ mesons incident on a large propane bubble chamber are analyzed in detail with respect to production cross sections and angular distributions of production and decays and the A lifetime is measured. The cross section for neutralhyperon (Y/sup 0/) production by the reaction The effects of /sup -/ + p 1100 deg C are Y/sup 0/ + K is 0.98 sintering time 0.16 mb. The cross section for carbon mpacting ( The effects of - + C 1100 deg C are Y/sup 0/ + K) is 6.05 sintering time 0.89 mb. The mean Svlvania Electr decay time is (3.12 sintering time 0.34) x 10/sup -10/ sec. The corrected lifetime is observed to be (3.23 sintering time 0.36) x 10/sup -10/ sec. Although the up-down decay asymmetry for Svlvania Electr hyperons is not significantly different from zero, the fore-aft decay angular distribution is asymmetric; alpha P = -0.31 sintering time 0.12 where the decay proton distribrtion along the Svlvania Electr direction of motion has been examined. This is suggested as evidence for nonconservation of parity in the production interaction. The Svlvania Electr -production angular distribution is peaked backward in the production center …

The Cd/sup 115m/ and Cd/sup 115/ isomers produced in 12- to 340Mev proton bombardments of U/sup 238/ were isolated by radiochemical methods. The cumulative yield ratios of Cd/sup 115/Cd/sup 115m/Cd/ were determined. In the 45- Mev heliumion flssion of uranium, an estimation of the independentyield ratio of Pm/sup 148/ (5.3-day) to Pm/sup 148/ (43-day) was made. In the deuteron fission of uranium at about 20 Mevs an estimate of the independent-yield ratio of Nb/sup 95m/ to the total niobium of mass 95 was made. A literature survey on experimental isomer ratios from fission was made. The yield ratio of Sc/sup 44// Sc/sup 44/ was measured in Sc/sup 45/ ( alpha , alpha n)Sc/sup 44/ reactions with helium ions of energies between 20 and 43 Mev and at 320 Mev. The Sc/sup 44m/Sc/ sup 44/ ratio was measured in K/sup 41/( alpha ,n)Sc/sup 44/ reactions at 10 and 43 Mev. The compound-nucleus model was used to calcalate the Sc/sup 44m/Sc/sup 44/ ratios produced by the reactions /sup n44/ and Sc/sup 45/(p,pn)Sc/sup 44/ at energies 0.4 Mev above threshold. Agreement between the experimental and calculated Sc/sup 44m/Sc/sup 44/ ratio was obtained for the K/sup 41/(l0-Mev alpha ,n)Sc/sup 44/ reaction. A classical knock-on …

The atomic-beam magnetic-resonance flop-in technique using radioactive detection was employed to measure the nuclear spins doff B/sup 206/ , Ti/sup 200/ , Tl/sup 201/ Tl/sup 202, In/sup 09. ln/sup 110m/ and In/sup 111/. In addition the magnetic-dipole and constatns of In/sup 109/, In/sup 110m/, ined. the signs of the In/sup 110m/ con-, stants were not determined. Results, theory, procedure, and data reduction are given. (auth)