POLARIZATION OF BALMER-a RADIATION FOLLOWING ELECTRON IMPACT ON ATOMIC 
HYDROGEN.
W.Kedzierski and J.W.McConkey
School of Physical Sciences, University of Windsor, Ontario N9B 3P4, 
Canada.
A pulsed microwave source has enabled a high density atomic hydrogen 
target to be obtained without the complication of a high background 
visible light intensity from the source when measurements of the 
interaction of an electron beam with the target are being carried out. 
Excitation and polarization function measurements of H (Balmer-a) have 
been made from threshold to 200 eV and have been compared with recent 
CCC calculations.