High resolution low-level liquid scintillation β-spectrometer
作者： Hannu Kojola , Henry Polach , Jarmo Nurmi , Timo Oikari , Erkki Soini
DOI: 10.1016/0020-708X(84)90208-4
关键词: Liquid scintillation counting 、 Spectrometer 、 Spectral line 、 Analytical chemistry 、 Copper 、 Electromagnetic shielding 、 Chemistry 、 Resolution (electron density) 、 Figure of merit 、 Scintillation
摘要: Abstract Multichannel analyses of β-energy spectra are used with advantage to enhance resolution and precision detection 14 C or 3 H isotopes at naturally occurring concentrations (low-level counting). Background reduction is achieved by asymmetric passive (graded Pb, Cu Cd) shielding active plastic scintillation guard optional flat multi-wire gas-proportional cosmic muon detector. Using Teflon/copper vials the figure merit for ca . 10,000.
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