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Rapid crystallization of externally produced ions in a Penning trap

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Title: Rapid crystallization of externally produced ions in a Penning trap
Authors: Murboeck, T
Schmidt, S
Birkl, G
Noertershaeuser, W
Thompson, RC
Vogel, M
Item Type: Journal Article
Abstract: We have studied the cooling dynamics, formation process, and geometric structure of mesoscopic crystals of externally produced magnesium ions in a Penning trap. We present a cooling model and measurements for a combination of buffer gas cooling and laser cooling which has been found to reduce the ion kinetic energy by eight orders of magnitude from several hundreds of eV to μeV and below within seconds. With ion numbers of the order of 1 × 103 to 1 × 105, such cooling leads to the formation of ion Coulomb crystals which display a characteristic shell structure in agreement with the theory of non-neutral plasmas. We show the production and characterization of two-species ion crystals as a means of sympathetic cooling of ions lacking a suitable laser-cooling transition.
Issue Date: 11-Oct-2016
Date of Acceptance: 1-Oct-2016
URI: http://hdl.handle.net/10044/1/48916
DOI: https://dx.doi.org/10.1103/PhysRevA.94.043410
ISSN: 2469-9926
Publisher: American Physical Society
Journal / Book Title: Physical Review A
Volume: 94
Issue: 4
Copyright Statement: © 2016 American Physical Society.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/D068509/1
Keywords: Science & Technology
Physical Sciences
Optics
Physics, Atomic, Molecular & Chemical
Physics
LASER-COOLED IONS
STRONGLY COUPLED PLASMAS
QUADRUPOLE STORAGE-RING
HIGHLY-CHARGED IONS
THERMAL-EQUILIBRIUM
PHASE-TRANSITIONS
COULOMB CRYSTALS
HITRAP
MODES
Publication Status: Published
Article Number: ARTN 043410
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences



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