OBSERVATION OF ORDERED STRUCTURES OF LASER-COOLED IONS IN A QUADRUPOLE STORAGE RING

Authors
WAKI I KASSNER S BIRKL G WALTHER H
Citation
I. Waki et al., OBSERVATION OF ORDERED STRUCTURES OF LASER-COOLED IONS IN A QUADRUPOLE STORAGE RING, Physical review letters, 68(13), 1992, pp. 2007-2010
Citations number
23
Language
INGLESE
art.tipo
Article
Journal title
Physical review letters → ACNP
ISSN journal
0031-9007
Volume
68
Issue
13
Year of publication
1992
Pages
2007 - 2010
Database
ISI
SICI code
0031-9007(1992)68:13<2007:OOOSOL>2.0.ZU;2-A
Abstract
We observed phase transitions and ordered structures of laser-cooled M g+ ions stored in a radio-frequency quadrupole storage ring with a dia meter of 115 mm. The ions are confined two dimensionally by a quadrupo le field and can move freely along the ring circumference. By cooling the ions with tangentially intersecting laser beams, we observed a lin ear string of ions aligned along the center line of the quadrupole fie ld. For higher ion densities the linear structure changes into a helic al structure. The dynamics of the stored ions was studied.