SCATTERING OF ELECTRONS IN BETA-SPECTROSCOPY SOURCES

Experimental spectra of the Yb-169 conversion lines having kinetic ene rgies of 3.7-18.4 keV and the beta spectrum from the decay of Pu-241 a re compared with calculations by the Monte Carlo method which take int o account the individual elastic and inelastic scattering processes of the electrons ire the source, in the substrate, and in a carbon layer contaminating the source. Good agreement is obtained between the theo retical and experimental results. It is also shown that the scattering of the electrons depends on their emission angle.