The fall of charged particles under gravity : a study of experimental problems

There are currently proposals to test the weak equivalence principle for antimatter by studying the motion of antiprotons, negative hydrogen ions, positrons, and electrons under gravity. The motions of such charged particles are affected by residual gas, radiation, and electric and magnetic fields,...

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Bibliographic Details
Published in:Reviews of modern physics 1992, Vol.64 (1), p.237-257
Main Authors: DARLING, T. W, ROSSI, F, OPAT, G. I, MOORHEAD, G. F
Format: Article
Language:English
Subjects:
ANTIBARYONS
ANTILEPTONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BARYONS
BASIC INTERACTIONS
CHARGED PARTICLES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Classical general relativity
CONTAMINATION
DIAMAGNETISM
ELECTRICITY
ELECTRONS
ELEMENTARY PARTICLES
EQUIVALENCE PRINCIPLE
Exact sciences and technology
FERMIONS
General relativity and gravitation
GRAVITATIONAL FIELDS
GRAVITATIONAL INTERACTIONS
HADRONS
HYDROGEN IONS
INTERACTIONS
IONS
LEPTONS
MAGNETISM
MATTER
NUCLEI
NUCLEONS
PARAMAGNETISM
Physics
POSITRONS
POTENTIALS 661310 > Relativity & Gravitation-- (1992-)
RADIATION PRESSURE
RESIDUAL INTERACTIONS
SURFACE POTENTIAL
THERMOELECTRICITY
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Summary:There are currently proposals to test the weak equivalence principle for antimatter by studying the motion of antiprotons, negative hydrogen ions, positrons, and electrons under gravity. The motions of such charged particles are affected by residual gas, radiation, and electric and magnetic fields, as well as gravity. The electric fields are particularly sensitive to the state of the shielding'' container. This paper reviews, and extends where necessary, the physics of these extraneous influences on the motion of charged particles under gravity. The effects considered include residual gas scattering; wall potentials due to patches, stress, thermal gradients, and contamination states; and image-charge-induced dissipation.
ISSN:0034-6861
1539-0756
DOI:10.1103/RevModPhys.64.237