Y. Miyake et al., ULTRA SLOW MUONS GENERATED BY LASER RESONANT IONIZATION OF THERMAL MUONIUM PRODUCED BY 500-MEV PROTONS WITH HOT TUNGSTEN, Hyperfine interactions, 106(1-4), 1997, pp. 237-244
We report recent progress to date on the UT-MSL/KEK ''Ultra Slow Muon'
' project, in which thermal muonium (Mu) atoms are generated from the
surface of a hot tungsten target placed at the primary 500 MeV proton
beam line and resonantly ionized by intense u.v. lasers synchronized w
ith the emission of the Mu. The positive muon ionization fragments are
collected by electrostatic beam optics to form a beam of slow positiv
e muons.