OBSERVATION OF $mu$$sup -$ CAPTURE IN LIQUID HYDROGEN

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Phys. Rev. Letters

DOI:https://doi.org/10.1103/PhysRevLett.8.34· OSTI ID:4796798

Hildebrand, R H

A 991/2% pure muon beam from the Chicago cyclotron is brought to rest in an 8-liter hydrogen bubble chamber. The incoming particles are identified as muons by their residual range versus curvature in the 20-kilogauss field of the chamber. The reaction mu - + p - n + v is identified by the absence of a decay electron and by the appesrance of a recoil proton created by the neutron. Pion captures and mu captures in elements of Z > l are excluded in identification. Nondecaying meson tracks are not associated with recoil protons due to the general background of lowenergy neutrons near the meson beam. The energy of a neutron emitted froma the end of a meson track must be determined with adequate precision by measuring the range and direction of a recoil proton it is supposed to have caused. (L.N.N.)

• Research Organization: Argonne National Lab., Ill.; and Univ. of Chicago
• NSA Number: NSA-16-009395
• OSTI ID: 4796798
• Journal Information: Phys. Rev. Letters, Journal Name: Phys. Rev. Letters Vol. Vol: 8
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BACKGROUND
BEAMS
BUBBLE CHAMBERS
CAPTURE
CYCLOTRONS
DECAY
ELECTRIC CHARGES
ELECTRONS
HYDROGEN
LIQUIDS
MAGNETIC FIELDS
MEASURED VALUES
MESONS
MUONS
NEUTRONS
PARTICLE TRACKS
PHYSICS
PROTONS
RECOILS