Speaker
Description
A simple semi-classical treatment of photon cascades has been developed. The basic assumption is that a nucleus with a classical spin vector J can be represented by the maximally aligned quantum state |J,M = J> with the quantization axis being the spin direction J/J. It is furthermore assumed that a photon emission yields a daughter state of a similar form, |J′,M′ = J′>, but with its alignment direction having been modified as a consequence of the angular momentum recoil. The overall good quality of the treatment is illustrated for a variety of E1 and E2 two-photon cascades for which non-trivial angular correlations emerge. The method is suitable for use in nuclear fission simulation codes, making it possible to address photon-photon correlation observables quantitatively.
This work was supported in part by the Office of Nuclear Physics in the U.S. Department of Energy’s Office of Science under Contract
No. DE-AC02-05CH11231.
