GAMMA-RAY ANGULAR CORRELATIONS FROM ALIGNED NUCLEI PRODUCED BY NUCLEAR REACTIONS

摘要: Two general procedures for the measurement and analysis of angular correlations gamma radiations from nuclear reactions are described which have wide applications in spectroscopy determination spins gamma-ray multipolarities. Cases can be studied by these methods when reaction proceeds through a compound state too complex to allow usual made, example where several levels overlap or direct interaction is dominant. The basis exploit simplifications brought about making reacting system axially symmetric. A sharp gamma-ray-emitting formed such regarded as aligned terms relatively small number population parameters magnetic substates. In first procedure, Y* prepared X(h1h2) h2 unobserved. has axial symmetry beam axis. From coincidence correlation measurements two cascade gam...