SINGLE IONIZATION BY COMPTON SCATTERING ON He and H-.

S.Itza-Ortiz(*), J.Wang(+), J.H. McGuire(*), J. Burgdorfer(**) and  A. Godunov(*).

(*) Tulane University, New Orleans, LA, 70118, U.S.A. 
(+) University of Massachusetts-Dartmouth, N. Dartmouth, MA, 02747,U.S.A.
(**) University of Tennessee, Knoxville, TN, 37996, U.S.A.


We calculated the differential cross sections per unit energy tranfer of single ionization 
by Compton scattering of He and H-. We compare these with the corresponding Compton cross 
sections by one and two free electrons. We also calculated the total Compton cross sections 
for  He and, for the first time, for H-. We compared them with the total Compton cross 
sections of one and two free electrons.