Relative Ionization by Cosmic-RayμMesons in a Liquid Scintillator

Abstract

Measurements of the rise in energy loss of $\mu$ mesons of energy between 385 Mev and 2200 Mev in traversing an xylene solution have been made. The observed pulse-height distribution is compared with the most probable energy loss and median energy loss as found using the Landau theory without a density correction and with a density correction as calculated by Sternheimer. The result of this measurement favors a density correction to the theory of energy loss.