PERTURBED ANGULAR CORRELATION.

Abstract

Perturbed angular correlation has been established in the past two decades as a powerful tool for the microscopic investigation of solid state properties. It was originally developed and applied to the determination of magnetic dipole and electric quadrupole moments of excited nuclear states, a domain of nuclear physicists. The possibility to get information about internal magnetic fields or electric field gradients, which interact via a hyperfine interaction with the nuclear moments, opened up the field to solid state physics. Today, the precise determination of these electromagnetic fields in the local environment of radioactive probes constitutes the main application of this nuclear method.