Observation of soft x-ray transition radiation from medium energy electrons

Abstract

Soft x-rays (2 to 6 keV) have been observed from transition radiators using electrons at energies of 104 and 66 MeV. The observed spectra agree well with theory. Various stacks of mylar of 2.5, 3.5 and 6.35 μm thickness were used to produce the radiation. Optimum foil thicknesses and number were calculated and found experimentally to be correct.