Alignment and orientation of the3pP3state inHe4i as a function of foil tilt angle

Abstract
The Fano-Macek alignment and orientation parameters have been measured for the foil-excited 3pP3 state in He4 i as a function of foil tilt angle at an incident ion energy of 200 keV. The measurements were made by quantum-beat amplitude analysis of both linearly and circularly polarized light. The angular dependence of the alignment and orientation are significantly different from that reported for the 3pP1 state.