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Atomic, Molecular and Optical Physics

William & Mary

1990

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The Diffusion Of Muonic Hydrogen Atoms In Hydrogen Gas, Guo Fu Chen Jan 1990

The Diffusion Of Muonic Hydrogen Atoms In Hydrogen Gas, Guo Fu Chen

Dissertations, Theses, and Masters Projects

This experiment measured the time distribution of muonic hydrogen atoms which were formed when negative muons were brought to rest in H{dollar}\sb2{dollar} gas, containing Au target foils, at five pressures (750 mbar, 375 mbar, 188 mbar, 94 mbar and 47 mbar at 4.6 mm foil spacing). A Monte Carlo method is applied for deducing the initial velocity distribution, and preliminary results are obtained. The initial velocity distribution of {dollar}\mu{dollar}H atoms is reasonably well described as a 'Maxwellian' velocity distribution with a mean energy E = 3.4 eV. The corresponding muon mean capture energy is obtained: E{dollar}\sb{lcub}\rm c{rcub}{dollar} {dollar}\approx{dollar} 34 eV …