Laser spectroscopy with a cooler ring at the esr (GSI) and the TSR (MPI Heidelberg)
- 28 Downloads
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.
KeywordsLithium Beryllium Special Relativity Longitudinal Velocity Laser Spectroscopy
Unable to display preview. Download preview PDF.
- G.I. Budker et al., Part. Accel.7(1976)197.Google Scholar
- H. Poth et al., Z. Phys. A223(1989)171.Google Scholar
- W. Petrich et al., Contribution to the 2nd Workshop on the Diagnostics of Laser Cooled Ion Beams, Aarhus (1991).Google Scholar
- B. Franzke et al.,Proc. 2nd European Particle Accelerator Conf., Nice (1990).Google Scholar
- M. Steck, Private communication.Google Scholar
- T. Kühl et al., GSI-ESR Proposal 22 and Physica Scripta T22(1988)144.Google Scholar