Abstract
The first gamma spectra associated with the annihilation of positrons with individual core levels (Cu and Ag ) are presented. The spectra were obtained by measuring the energy of rays time coincident with Auger electrons emitted as a result of positrons annihilating with a selected core level. Relativistic calculations show good agreement with experiment over a limited range of momenta. However, statistically significant differences indicate that the measurements can provide an impetus to new calculations of many body effects in positron-core electrons annihilation.
- Received 21 August 2001
DOI:https://doi.org/10.1103/PhysRevLett.89.075503
©2002 American Physical Society