Absolute Yields of X-Ray Induced Photoemission from Metals

Absolute electron yields from tantalum, molybdenum, copper and aluminum have been measured for several x-ray bombarding geometries. The photon spectra used were derived from filtered bremsstrahlung generated in a tungsten anode at 50 KV, constant potential. The electron spectra were measured by a cylindrical electrostatic analyzer with a secondary emission detector. The spectra exhibit both Auger and scattered photoelectrons.