Coulomb clusters in RETRAP
Storage rings and Penning traps are being used to study ions in their highest charge states. Both devices must have the capability for ion cooling in order to perform high precision measurements such as mass spectrometry and laser spectroscopy. This is accomplished in storage rings in a merged beam arrangement where a cold electron beam moves at the speed of the ions. In RETRAP, a Penning trap located at Lawrence Livermore National Laboratory, a sympathetic laser/ion cooling scheme has been implemented. In a first step, singly charged beryllium ions are cooled electronically by a tuned circuit and optically by a laser. Then hot, highly charged ions are merged into the cold Be plasma. By collisions, their kinetic energy is reduced to the temperature of the Be plasma. First experiments indicate that the highly charged ions form a strongly coupled plasma with a Coulomb coupling parameter.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP) (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 2835
- Report Number(s):
- UCRL-JC-132209; DP0102012; 96-ERD-052; DP0102012; 96-ERD-052; TRN: US0101340
- Resource Relation:
- Conference: International Conference on Trapped Charged Particles and Fundamental Physics, Monterey, CA (US), 08/31/1998--09/04/1998; Other Information: PBD: 22 Oct 1998
- Country of Publication:
- United States
- Language:
- English
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Coulomb clusters in RETRAP
Cooling of highly charged ions in a Penning trap