Improved methods of measurement and analysis of conversion electron and beta-particle spectra
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.
Dragoun
O
Nuclear Physics Institute, Acad. Sci. Czech Rep., Rez near Prague. dragoun@ujf.cas.cz
Spalek
A
Rysavy
M
Kovalik
A
Yakushev
EA
Brabec
V
Frana
J
Venos
D