Neutron production by cosmic-ray muons at shallow depth

Abstract

The yield of neutrons produced by cosmic ray muons at a shallow depth of 32 meters of water equivalent has been measured. The Palo Verde neutrino detector, containing 11.3 tons of Gd loaded liquid scintillator and 3.5 tons of acrylic served as a target. The rate of one and two neutron captures was determined. Modeling the neutron capture efficiency allowed us to deduce the total yield of neutrons $Y_{tot}=(3.60\pm 0.09\pm 0.31)\times 10^{-5}$ neutrons per muon and g/cm${}^2$. This yield is consistent with previous measurements at similar depths.

arXiv comment12 pages, 3 figures

References in corpus (5)

• Limits on Neutrino Oscillations from the CHOOZ Experiment
• Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND
• Results from the Palo Verde Neutrino Oscillation Experiment
• Search for Neutrino Oscillations at the Palo Verde Nuclear Reactors
• Pion and neutron production by cosmic-ray muons underground

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