Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field
Abstract
A procedure for computing the electrostatic equilibria of non-neutral plasmas in a Penning trap with a nonuniform magnetic field by solving Poisson's equation using an iterative method is described. Plasma equilibria in a model Penning trap with high and low field regions are computed. The plasma is assumed to follow the Boltzmann density distribution along magnetic field lines. Correspondence with previous investigations examining similar configurations analytically and using particle-in-cell simulations is found. The relationship between the plasma density in low and high field regions is examined for various plasma temperatures, densities, magnetic mirror ratios, and plasma and electrode radii. An analytical description of the radial density profile in the high field region is developed and compared with the computed equilibria. A concept is described for cooling a positron plasma with laser-cooled ions trapped axially within a high magnetic field region, while antiprotons are trapped axially separated from the laser-cooled ions within a low field region, and the positron plasma extends to both regions.
- Authors:
-
[2]
- Ball Aerospace, Albuquerque, NM (United States); Univ. of North Texas, Denton, TX (United States)
- Univ. of North Texas, Denton, TX (United States)
- Publication Date:
- Research Org.:
- Univ. of North Texas, Denton, TX (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1609767
- Alternate Identifier(s):
- OSTI ID: 1514757
- Grant/Contract Number:
- FG02-06ER54883
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 26; Journal Issue: 5; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics; Leptons; Electromagnetic coils; Partial differential equations; Ion-trap; Magnetic mirrors; Plasmas; Electrostatics; Magnetic fields
Citation Formats
Lane, R. A., and Ordonez, C. A. Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field. United States: N. p., 2019.
Web. doi:10.1063/1.5092136.
Lane, R. A., & Ordonez, C. A. Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field. United States. https://doi.org/10.1063/1.5092136
Lane, R. A., and Ordonez, C. A. Tue .
"Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field". United States. https://doi.org/10.1063/1.5092136. https://www.osti.gov/servlets/purl/1609767.
@article{osti_1609767,
title = {Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field},
author = {Lane, R. A. and Ordonez, C. A.},
abstractNote = {A procedure for computing the electrostatic equilibria of non-neutral plasmas in a Penning trap with a nonuniform magnetic field by solving Poisson's equation using an iterative method is described. Plasma equilibria in a model Penning trap with high and low field regions are computed. The plasma is assumed to follow the Boltzmann density distribution along magnetic field lines. Correspondence with previous investigations examining similar configurations analytically and using particle-in-cell simulations is found. The relationship between the plasma density in low and high field regions is examined for various plasma temperatures, densities, magnetic mirror ratios, and plasma and electrode radii. An analytical description of the radial density profile in the high field region is developed and compared with the computed equilibria. A concept is described for cooling a positron plasma with laser-cooled ions trapped axially within a high magnetic field region, while antiprotons are trapped axially separated from the laser-cooled ions within a low field region, and the positron plasma extends to both regions.},
doi = {10.1063/1.5092136},
journal = {Physics of Plasmas},
number = 5,
volume = 26,
place = {United States},
year = {Tue May 21 00:00:00 EDT 2019},
month = {Tue May 21 00:00:00 EDT 2019}
}
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