Low temperature diffusion of positive muons in copper

Measurement of the depolarization of positive muons in copper in zero external field shows that the hopping rate of the muons increases as the temperature decreases from 4.2 K to approx. 1K. This is the first unambiguous demonstration of muon diffusion behavior which is not thermally activated.

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Bibliographic Details
Main Authors: Clawson, C W, Crowe, K M, Kohn, S.E. Rosenblum, S.S., Huang, C Y, Smith, J L, Brewer, J H
Format: Conference Proceeding
Language:English
Subjects:
360104 - Metals & Alloys- Physical Properties
640303 - Atomic, Molecular & Chemical Physics- Positronium, Muonium, & Muonic & Mesic Atoms & Molecules
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOMIC AND MOLECULAR PHYSICS
COPPER
DEPOLARIZATION
DIFFUSION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
LEPTONS
MATERIALS SCIENCE
METALS
MUON PROBES
MUONS
MUONS PLUS
POLARIZATION
PROBES
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE
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Description
Summary:Measurement of the depolarization of positive muons in copper in zero external field shows that the hopping rate of the muons increases as the temperature decreases from 4.2 K to approx. 1K. This is the first unambiguous demonstration of muon diffusion behavior which is not thermally activated.
ISSN:0378-4363