Transfer of negative muons from hydrogen to argon in gaseous H2 + Ar mixtures at high pressure

The transfer rate of negative muons from the 1s state of hydrogen to argon has been measured in H2 + Ar gas mixtures at total pressures of 100 and 140 bar and argon concentrations C (Ar/H2) of 6 x 10-4 and 20 x 10-4. The reduced transfer rates have been found to be independent of the total pressure and of the argon concentration. The mean reduced transfer rate obtained is compared with the rates measured by other authors. (author)