1211.1471 (A. S. Barabash et al.)

Determination of the accuracy of measuring the energy of charged
particles by their path lengths in nuclear emulsion    [PDF]

A. S. Barabash, V. Ya. Bradnova, M. M. Chernyavsky, V. V. Dubinina, N. P. Egorenkova, S. I. Konovalov, N. G. Polukhina, E. A. Pozharova, T. V. Shchedrina, V. A. Smirnitsky, N. I. Starkov, Tan Nang So, V. I. Umatov

The path lengths of monochromatic muons emerging in the $\pi \to \mu\nu_{\mu} $ 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 $ \sigma_{\mu} = (0.11 \pm 0.01)$ MeV, which corresponds to the accuracy of $ \sigma \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 $2\beta $ decay ($\sim 3$ MeV) to an accuracy of $ \sigma \approx 5%$.

View original: http://arxiv.org/abs/1211.1471