Parity nonconservation in high-Z heliumlike ions.

Abstract

Detection of parity-violating asymmetries in 1${\mathit{s}}_{1/2}$2${\mathit{p}}_{1/2}$${\mathrm{}}^{3}$${\mathit{P}}_{0}$-1${\mathit{s}}^{2}$${\mathrm{}}^{1}$${\mathit{S}}_{0}$ two-photon transitions in high-Z He-like ions is discussed. The circular polarization asymmetry of one of the two photons emitted in the two-photon decay of the 2${\mathrm{}}^{3}$${\mathit{P}}_{0}$ level in He-like uranium is of order 3\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}4}$. Parity-violating asymmetries in the laser-driven processes of singly stimulated two-photon emission and anti-Stokes Raman scattering are also discussed. Further experimental and theoretical research is needed to determine if parity experiments based on these processes are feasible. \textcopyright{} 1996 The American Physical Society.