Abstract
The angular distributions of gamma rays with respect to the incident proton beam on a thick target have been measured for gamma rays following Coulomb excitation in , , , , , , , and . The observed angular distributions deviate considerably from the semiclassical theory of angular distributions of gamma rays following Coulomb excitation given by Alder and Winther. Empirical curves of energy-dependent coefficients for a thick target are obtained from the results for and . With these empirical coefficients, information on the spin sequences and the character of the gamma transitions are deduced from the angular distribution measurements in the odd mass nuclei. The spin sequences are as follows: and with (where ) for the 550- and 277-kev transitions, respectively, in ; and with for the 303- and 166-kev transitions, respectively, in ; and with for the 427- and 325-kev transitions, respectively, in ; and and with for the 365- and 305-kev transitions, respectively, in .
- Received 30 March 1955
DOI:https://doi.org/10.1103/PhysRev.99.127
©1955 American Physical Society