A. Dorn et al., ORIENTATIONAL DICHROISM IN THE ELECTRON-IMPACT IONIZATION OF LASER-ORIENTED ATOMIC SODIUM, Physical review letters, 80(2), 1998, pp. 257-260
We report the first experimental observation of ''orientational dichro
ism'' in electron impact-induced ionization. (e, 2e) experiments have
been performed on pure angular momentum states 3P(3/2), m(F) = +3 and
m(F) = -3 of the sodium atom, excited by right- and left-handed circul
arly polarized laser light. Our results show that the angular correlat
ion of the final-state electron pair is strongly dependent on the mt s
ublevel populated. Comparison with calculation demonstrates the depend
ence of the dichroism on details of the scattering dynamics.