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Title: Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse

Abstract

An electron irradiated by a linearly polarized relativistic intensity laser pulse in a cylindrical plasma channel can gain significant energy from the pulse. The laser electric and magnetic fields drive electron oscillations in a plane making it natural to expect the electron trajectory to be flat. We show that strong modulations of the relativistic γ-factor associated with the energy enhancement cause the free oscillations perpendicular to the plane of the driven motion to become unstable. As a consequence, out of plane displacements grow to become comparable to the amplitude of the driven oscillations and the electron trajectory becomes essentially three-dimensional, even if at an early stage of the acceleration it was flat. In conclusion, the development of the instability profoundly affects the x-ray emission, causing considerable divergence of the radiation perpendicular to the plane of the driven oscillations, while also reducing the overall emitted energy.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [1];  [3]
  1. The Univ. of Texas at Austin, Austin, TX (United States)
  2. STFC Rutherford-Appleton Lab., Didcot (United Kingdom)
  3. Univ. of Michigan, Ann Arbor, MI (United States)
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
OSTI Identifier:
1469683
Alternate Identifier(s):
OSTI ID: 1238202
Grant/Contract Number:  
NA0002723; NA0002008; FG02-04ER54742; SC0007889; SC0010622; FG02- 04ER54742
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 2; 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

Citation Formats

Arefiev, A. V., Khudik, V. N., Robinson, A. P. L., Shvets, G., and Willingale, L. Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse. United States: N. p., 2016. Web. doi:10.1063/1.4942036.
Arefiev, A. V., Khudik, V. N., Robinson, A. P. L., Shvets, G., & Willingale, L. Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse. United States. doi:10.1063/1.4942036.
Arefiev, A. V., Khudik, V. N., Robinson, A. P. L., Shvets, G., and Willingale, L. Tue . "Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse". United States. doi:10.1063/1.4942036. https://www.osti.gov/servlets/purl/1469683.
@article{osti_1469683,
title = {Spontaneous emergence of non-planar electron orbits during direct laser acceleration by a linearly polarized laser pulse},
author = {Arefiev, A. V. and Khudik, V. N. and Robinson, A. P. L. and Shvets, G. and Willingale, L.},
abstractNote = {An electron irradiated by a linearly polarized relativistic intensity laser pulse in a cylindrical plasma channel can gain significant energy from the pulse. The laser electric and magnetic fields drive electron oscillations in a plane making it natural to expect the electron trajectory to be flat. We show that strong modulations of the relativistic γ-factor associated with the energy enhancement cause the free oscillations perpendicular to the plane of the driven motion to become unstable. As a consequence, out of plane displacements grow to become comparable to the amplitude of the driven oscillations and the electron trajectory becomes essentially three-dimensional, even if at an early stage of the acceleration it was flat. In conclusion, the development of the instability profoundly affects the x-ray emission, causing considerable divergence of the radiation perpendicular to the plane of the driven oscillations, while also reducing the overall emitted energy.},
doi = {10.1063/1.4942036},
journal = {Physics of Plasmas},
number = 2,
volume = 23,
place = {United States},
year = {2016},
month = {2}
}

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Cited by: 6 works
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