Measurement of helium-3 and deuterium stopping power ratio for negative muons

Bystritsky, V. M.; Gerasimov, V. V.; Wozniak, J.

Measurement of helium-3 and deuterium stopping power ratio for negative muons

Authors

Bystritsky, V. M.

Gerasimov, V. V.

Wozniak, J.

Description

The measurement method and results measuring of the stopping power ratio of helium-3 and deuterium atoms for muons slowed down in the D/$^3$He mixture are presented. Measurements were performed at four values of pure $^3$He gas target densities, $ϕ_{He} = 0.0337, 0.0355, 0.0359, 0.0363$ (normalized to the liquid hydrogen density) and at a density 0.0585 of the D/$^3$He mixture. The experiment was carried out at PSI muon beam $μ$E4 with the momentum P$μ=34.0$ MeV/c. The measured value of the mean stopping ratio $S_{^3He/D}$ is $1.66\pm 0.04$. This value can also be interpreted as the value of mean reduced ratio of probabilities for muon capture by helium-3 and deuterium atoms.
7 pages, 6 figures