title: Improved methods of measurement and analysis of conversion electron and beta-particle spectra
abstract: A general statistical test of the stability of measurement conditions was demonstrated on the beta-spectra of 241Pu cumulated during four years. The alpha- and gamma-ray spectroscopy indicated stability of the 241Pu source. Monte Carlo modelling of individual collision events clarified the role of electron scattering and energy losses within a radioactive source down to energies of several hundreds of eV. The impact ionization by beta-particles of carbon and oxygen atoms in a surface contamination layer on the 241Pu and 63Ni sources was observed.
authors.affiliation: Nuclear Physics Institute, Acad. Sci. Czech Rep., Rez near Prague. dragoun@ujf.cas.cz
authors.initials: O
authors.lastname: Dragoun
authors.initials: A
authors.lastname: Spalek
authors.initials: M
authors.lastname: Rysavy
authors.initials: A
authors.lastname: Kovalik
authors.initials: EA
authors.lastname: Yakushev
authors.initials: V
authors.lastname: Brabec
authors.initials: J
authors.lastname: Frana
authors.initials: D
authors.lastname: Venos