/ Experiment-Nucl nucl-ex/0607006


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


Bystritsky, V.M. (Dubna, JINR) ; Gerasimov, V.V. (Dubna, JINR) ; Wozniak, J. (AGH-UST, Cracow)

Published in: Phys.Rev.Lett.
Year: 2006
Vol.: 97
Page No: 12001
Pages: 7

Abstract: 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, $\phi_{He} = 0.0337, 0.0355, 0.0359, 0.0363$ (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 $\mu$E4 with the momentum P$\mu =34.0$ 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.

Keyword(s): stopping power ; negative muons ; muonic atoms ; atomic capture ; helium-3 ; deuterium

Web-Page: http://dx.doi.org/10.1103/PhysRevLett.97.12001; http://link.aps.org/abstract/PRL/V97/P12001

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