SEARCH FOR POLARIZATION BREMSSTRAHLUNG USING PROTONS AND He+ ON THIN TARGETS OF Cu, Ni, Ag and Au S. Portillo*, C. A. Quarles*, F. D. McDaniel#, J. L. Duggan#, and M. El Bouanani# * Department of Physics and Astronomy, Texas Christian University, Fort Worth TX 76129 USA #Ion Beam Modification and Analysis Laboratory, Department of Physics, University of North Texas, P.O. Box 305370, Denton TX 76203-5370 USA Experimental cross sections for continuum radiation are presented for 1.0 MeV protons on Cu and for 1.0 MeV He + on thin targets of Ni, Cu, Ag and Au. Data will also be presented for 1.5 MeV He+ on a thick Cu target.