Abstract
Parities of levels in and have been found from observations on alpha-particle groups emitted in the forward direction following bombardment of by and ions. The interpretation depends only on conservation laws and not on any assumption about the reaction mechanism. Of the lowest seven known states of [ MeV] and the lowest five of [ MeV] only the two in parentheses have parity . The spins () of all these levels are known, and because these two are the only members with odd, it follows that all 12 levels have positive parity.
- Received 15 March 1963
DOI:https://doi.org/10.1103/PhysRev.131.818
©1963 American Physical Society