6533b7d5fe1ef96bd126455b

RESEARCH PRODUCT

A direct determination of the proton-electron mass ratio

Eberhard KlemptG. Gärtner

subject

PhysicsNuclear and High Energy PhysicsNuclear TheoryCyclotronCyclotron resonanceElectronProton-to-electron mass ratioFourier transform ion cyclotron resonanceElectron cyclotron resonancelaw.inventionNuclear physicslawQuadrupolePhysics::Accelerator PhysicsAtomic physicsIon cyclotron resonance

description

The cyclotron resonance of protons and electrons in a magnetic field of 5.7 Tesla produced by a superconducting solenoid has been measured. Protons and electrons were alternately confined in an electrostatic quadrupole trap. The quotient of the cyclotron frequencies provides a first direct determination of the proton-electron mass ratio. The result ofM p /M e =1836.1502(53) agrees with other more precise but indirect determinations of this quantity.

https://doi.org/10.1007/bf01408352