0000000000452235

AUTHOR

H.-j. Miesner

showing 4 related works from this author

Transverse laser cooling of a radio-frequency bunched ion beam in the storage ring TSR

1996

Abstract We report on the observation of the indirect transverse laser cooling effect in a radio-frequency bunched beam of 7.3 MeV 9 Be + ions, stored in the Heidelberg Test Storage Ring and subject to direct longitudinal laser cooling. This bunched scheme offers particular advantages for producing ultracold beams with unprecedented phase-space densities.

PhysicsNuclear and High Energy PhysicsResolved sideband coolingIon beamIonTransverse planeLaser coolingPhysics::Accelerator PhysicsPhysics::Atomic PhysicsRadio frequencyAtomic physicsNuclear ExperimentInstrumentationBeam (structure)Storage ring
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LASER SPECTROSCOPY WITH A COOLER RING AT THE ESR (GSI) AND THE TSR (MPI HEIDELBERG)

1992

At the TSR cooler ring at Heidelberg, laser studies were carried out using singly charged lithium and beryllium ions. Laser spectroscopy of relativistic lithium ions (v=0.04c) yielded signals with a narrow linewidth, suitable for an experimental test of special relativity. A dramatic reduction of the beam temperature, as defined by the longitudinal velocity spread, was achieved via laser cooling in both cases. At the ion energies available at ESR it will become possible to prepare and store bare ions up to U92+. Electron cooling was succesfully demonstrated for hydrogen-like Bi82+ ions, where a laser experiment is scheduled to study the ground-state hyperfine splitting.

Nuclear and High Energy PhysicsChemistryPhysics::Opticschemistry.chemical_elementCondensed Matter PhysicsLaserAtomic and Molecular Physics and Opticslaw.inventionIonLaser linewidthlawLaser coolingLithiumPhysics::Atomic PhysicsPhysical and Theoretical ChemistryAtomic physicsSpectroscopyHyperfine structureElectron cooling
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Test of Special Relativity in a Heavy Ion Storage Ring

2008

Nuclear physicsPhysicsTheoretical physicsLaser noiseOptical distortionHeavy ionAtomic physicsSpecial relativity (alternative formulations)Laser beamsStorage ringEQEC 96 1996 European Quantum Electronic Conference EQEC-96
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Laser cooling of stored high-velocity ions by means of the spontaneous force

1993

A longitudinal laser cooling of ion beams at about 5% of the velocity of light has been performed at the Heidelberg Test Storage Ring with various cooling schemes employing the spontaneous force. For a 7.29-MeV $^{9}\mathrm{Be}^{+}$ beam with an initial longitudinal temperature of 2700 K, the main characteristics of laser cooling in a storage ring are discussed. When undamped, the transverse betatron oscillations of the coasting ions limit the longitudinal temperature after laser cooling to typically 1 K. After damping the transverse motion by precooling the ions with an electron cooler, longitudinal temperatures of below 30 mK have been obtained in the subsequent laser cooling. In this cas…

PhysicsResolved sideband coolingIon beamElectronLaserAtomic and Molecular Physics and OpticsIonlaw.inventionIntrabeam scatteringlawLaser coolingPhysics::Accelerator PhysicsPhysics::Atomic PhysicsAtomic physicsDoppler coolingPhysical Review A
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