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Title: Molecular Dynamics Simulations of Collisional Cooling and Ordering of Multiply Charged Ions in a Penning Trap

Abstract

Molecular dynamics simulations are used to help design new experiments by modeling the cooling of small numbers of trapped multiply charged ions by Coulomb interactions with laser-cooled Be{sup +} ions. A Verlet algorithm is used to integrate the equations of motion of two species of point ions interacting in an ideal Penning trap. We use a time step short enough to follow the cyclotron motion of the ions. Axial and radial temperatures for each species are saved periodically. Direct heating and cooling of each species in the simulation can be performed by periodically rescaling velocities. Of interest are Fe{sup 11+} due to a EUV-optical double resonance for imaging and manipulating the ions, and Ca{sup 14+} since a ground state fine structure transition has a convenient wavelength in the tunable laser range.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Defense Programs (DP) (US)
OSTI Identifier:
791401
Report Number(s):
UCRL-JC-140676
Journal ID: ISSN 0094-243X; TRN: US0501995
DOE Contract Number:  
W-7405-Eng-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 576; Conference: 16th International Conference on the Application of Accelerators in Research and Industry, Denton, TX (US), 11/01/2000--11/04/2000; Other Information: PBD: 5 Oct 2000
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATORS; ALGORITHMS; CYCLOTRONS; DESIGN; EQUATIONS OF MOTION; FINE STRUCTURE; GROUND STATES; HEATING; LASERS; RESONANCE; SIMULATION; WAVELENGTHS

Citation Formats

Holder, J P, Church, D A, Gruber, L, DeWitt, H E, Beck, B R, and Schneider, D. Molecular Dynamics Simulations of Collisional Cooling and Ordering of Multiply Charged Ions in a Penning Trap. United States: N. p., 2000. Web. doi:10.1063/1.1395264.
Holder, J P, Church, D A, Gruber, L, DeWitt, H E, Beck, B R, & Schneider, D. Molecular Dynamics Simulations of Collisional Cooling and Ordering of Multiply Charged Ions in a Penning Trap. United States. https://doi.org/10.1063/1.1395264
Holder, J P, Church, D A, Gruber, L, DeWitt, H E, Beck, B R, and Schneider, D. 2000. "Molecular Dynamics Simulations of Collisional Cooling and Ordering of Multiply Charged Ions in a Penning Trap". United States. https://doi.org/10.1063/1.1395264. https://www.osti.gov/servlets/purl/791401.
@article{osti_791401,
title = {Molecular Dynamics Simulations of Collisional Cooling and Ordering of Multiply Charged Ions in a Penning Trap},
author = {Holder, J P and Church, D A and Gruber, L and DeWitt, H E and Beck, B R and Schneider, D},
abstractNote = {Molecular dynamics simulations are used to help design new experiments by modeling the cooling of small numbers of trapped multiply charged ions by Coulomb interactions with laser-cooled Be{sup +} ions. A Verlet algorithm is used to integrate the equations of motion of two species of point ions interacting in an ideal Penning trap. We use a time step short enough to follow the cyclotron motion of the ions. Axial and radial temperatures for each species are saved periodically. Direct heating and cooling of each species in the simulation can be performed by periodically rescaling velocities. Of interest are Fe{sup 11+} due to a EUV-optical double resonance for imaging and manipulating the ions, and Ca{sup 14+} since a ground state fine structure transition has a convenient wavelength in the tunable laser range.},
doi = {10.1063/1.1395264},
url = {https://www.osti.gov/biblio/791401}, journal = {},
issn = {0094-243X},
number = ,
volume = 576,
place = {United States},
year = {Thu Oct 05 00:00:00 EDT 2000},
month = {Thu Oct 05 00:00:00 EDT 2000}
}

Conference:
Other availability
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