Research of the secondary electrons from radioactive radiation in sources 152,154,155Eu and 153Gd in various experimental conditions

The secondary electrons of the near-zero energy (eo), formed in sources 152,154,155Eu and 153Gd, used in spectroscopy of conversion electrons are investigated. On the base of (γ-eo) - and (KX–eo) coincidences the Z-characteristics Z=N(γ-eo)/Nγ and Zβ/Zε for emission of eo-electrons are determined depending on a nuclide, its environment, geometry of measurements and strength of an assembling electrical field. It was defined that in formation of eo-electrons from β-decay of 154Eu the unknown near-zero component participates.