Dragoun O, Spalek A, Rysavy M, Kovalik A, Yakushev EA, Brabec V V, Frana J, Venos D. Improved methods of measurement and analysis of conversion electron and beta-particle spectra.
Appl Radiat Isot 2000;
52:387-91. [PMID:
10724379 DOI:
10.1016/s0969-8043(99)00183-9]
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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.
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