Universal scalings for laser acceleration of electrons in ion channels
Abstract
Here, we analytically investigate the acceleration of electrons undergoing betatron oscillations in an ion channel, driven by a laser beam propagating with superluminal (or luminal) phase velocity. The universal scalings for the maximum attainable electron energy are found for arbitrary laser and plasma parameters by deriving a set of dimensionless equations for paraxial ultra-relativistic electron motion. One of our analytic predictions is the emergence of forbidden zones in the electrons' phase space. For an individual electron, these give rise to a threshold-type dependence of the final energy gain on the laser intensity. The universal scalings are also generalized to the resonant laser interaction with the third harmonic of betatron motion and to the case when the laser beam is circularly polarized.
- Authors:
-
- Univ. of Texas, Austin, TX (United States). Inst. for Fusion Studies and Dept. of Physics
- Univ. of Texas, Austin, TX (United States). Center for High Energy Density Science
- Univ. of Texas, Austin, TX (United States). Inst. for Fusion Studies and Dept. of Physics; Cornell Univ., Ithaca, NY (United States). School of Applied and Engineering Physics
- Publication Date:
- Research Org.:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1465155
- Alternate Identifier(s):
- OSTI ID: 1329487
- Grant/Contract Number:
- SC0007889; SC0010622; FA9550-14-1-0045; NA0002723; NA0002008; FG02-04ER54742
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 10; 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; kinematics; laser beams; betatrons; plasma channeling; equations of motion; Doppler effect; ion channels; electron beams; plasma waves; electric fields
Citation Formats
Khudik, Vladimir, Arefiev, Alexey, Zhang, Xi, and Shvets, Gennady. Universal scalings for laser acceleration of electrons in ion channels. United States: N. p., 2016.
Web. doi:10.1063/1.4964901.
Khudik, Vladimir, Arefiev, Alexey, Zhang, Xi, & Shvets, Gennady. Universal scalings for laser acceleration of electrons in ion channels. United States. https://doi.org/10.1063/1.4964901
Khudik, Vladimir, Arefiev, Alexey, Zhang, Xi, and Shvets, Gennady. Thu .
"Universal scalings for laser acceleration of electrons in ion channels". United States. https://doi.org/10.1063/1.4964901. https://www.osti.gov/servlets/purl/1465155.
@article{osti_1465155,
title = {Universal scalings for laser acceleration of electrons in ion channels},
author = {Khudik, Vladimir and Arefiev, Alexey and Zhang, Xi and Shvets, Gennady},
abstractNote = {Here, we analytically investigate the acceleration of electrons undergoing betatron oscillations in an ion channel, driven by a laser beam propagating with superluminal (or luminal) phase velocity. The universal scalings for the maximum attainable electron energy are found for arbitrary laser and plasma parameters by deriving a set of dimensionless equations for paraxial ultra-relativistic electron motion. One of our analytic predictions is the emergence of forbidden zones in the electrons' phase space. For an individual electron, these give rise to a threshold-type dependence of the final energy gain on the laser intensity. The universal scalings are also generalized to the resonant laser interaction with the third harmonic of betatron motion and to the case when the laser beam is circularly polarized.},
doi = {10.1063/1.4964901},
journal = {Physics of Plasmas},
number = 10,
volume = 23,
place = {United States},
year = {Thu Oct 20 00:00:00 EDT 2016},
month = {Thu Oct 20 00:00:00 EDT 2016}
}
Web of Science
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