No abstract

A grey wedge pulse height analyzer was used to study the decay of Pm 150 with and without coincidence arrangements. Gamma rays 3.0, 2.6, 2.0, 1.67, 1.32, 1.17, 0.82, 0.43, and 0.34 Mev in energy were observed, some in coincidence with 2.01-and 3.00-Mev negatrons which had previously been shown to be emitted. k decay scheme is suggested and some remarks on the beta stability of Nd 150 are made.

533Similarly, though Ni 58 and Ni 6() are comparable feature for feature below 75°, thereafter they appear to diverge (or for Ni 58

We have analyzed data at nine different incident pion energies to study the cross sections and angular distributions in the reaction IT~ +P*TT° + n. The energies span the region of the second (600 MeV) and third (900 MeV) pion-nucleon resonances. The angular distributions indicate very little structure in the 600-MeV region, but in the 900-MeV region give strong evidence for a D 5/2 -F 5/2 interference in the T-\ state. The data reported here were obtained in a spark-chamber exposure at the Brookhaven Cosmotron designed to detect the production of neutral final states arising in n~p collisions. The preliminary charge-exchange angular distributions and cross sections presented herein represent about -| of the data we will obtain when we have scanned all our film.A schematic of the experimental setup is shown in Fig. lo A small liquid hydrogen target, 5 cm in diameter transverse to the beam and 4 cm along the beam, was located inside an anticoincidence shield composed of counters 3 and 5.