Determination of the accuracy of measuring the energy of charged particles by their path lengths in nuclear emulsion
The path lengths of monochromatic muons emerging in the $π\to μν_μ $ decay were measured by the coordinate method with the view to determine their energy by path length. The dispersion of muon energy measurements by this method was $ σ_μ = (0.11 \pm 0.01)$ MeV, which corresponds to the accuracy of $ σ\approx 2.7%$ of the energy of a charged particle estimated by its path length in nuclear emulsion. The developed method will enable measurements of electron energies in $2β$ decay ($\sim 3$ MeV) to an accuracy of $ σ\approx 5%$.
nucl-ex↗