Nuclear level densities in the shell model

Calvin Johnson, San Diego State University

Nuclear level densities are important for nuclear reactions. While in principle they ought to be among the simplest of properties--just counting states or levels--in practice they are far from trivial to either measure or to calculate. One of the main theoretical approaches to level densities is using single-particle states to approximate the partition function. I try out this simple approach; in some cases it works very well, in others it fails terribly. Trying to understand this will be important for future work.