POLARIZATION OF THE 3$^3$D$\rightarrow$2$^3$P LINE OF HELIUM EXCITED
BY ELECTRON IMPACT

D. Cvejanovic, K. Clague, A. Crowe, K Bartschat$^\dagger$, I.Bray$^\ddagger$ and D. Fursa$^\ddagger$

Department of Physics, University of Newcastle upon Tyne, NE1 7RU,  U.K.

$^\dagger$Department of Physics and Astronomy, Drake University, Des Moines, IA 50311, USA

$^\ddagger$ Electronic Structure of Materials Centre, The Flinders University of South Australia,
GPO Box 2100, Adelaide 5001, Australia

Experimental and theoretical investigations of electron impact excitation
of the 3$^3$D state of helium are reported over a wide energy range.
Polarization fractions for the 3$^3$D$\rightarrow$2$^3$P line have been
measured  and calculated using both CCC and RMPS theories.