Abstract
The gamma rays from the and the reaction have been observed. The gamma detector, a 3-in.×4-in. NaI crystal, was surrounded by a plastic scintillator to eliminate the cosmic-ray background. A pileup rejection circuit was used to reduce the background from neutron induced reactions in the NaI. The cross section of the reaction at 4 MeV is μb/sr at 90°. The intensity ratio, , agrees with that expected for electric dipole radiation (). The reaction at 1.35 MeV has a cross section /sr at 45°.
- Received 10 June 1963
DOI:https://doi.org/10.1103/PhysRev.132.751
©1963 American Physical Society