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

Arefiev, A. V.; Khudik, V. N.; Robinson, A. P.  L.; Shvets, G.; Willingale, L.

doi:10.1063/1.4942036

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

Journal Article · Tue Feb 16 00:00:00 EST 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4942036· OSTI ID:1469683

^[1];

^[1]; Robinson, A. P. L. ^[2]; Shvets, G. ^[1]; Willingale, L. ^[3]

The Univ. of Texas at Austin, Austin, TX (United States)
STFC Rutherford-Appleton Lab., Didcot (United Kingdom)
Univ. of Michigan, Ann Arbor, MI (United States)

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.

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Research Organization:: Univ. of Texas, Austin, TX (United States); Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)

Grant/Contract Number:: NA0002723; NA0002008; FG02-04ER54742; SC0007889; SC0010622; FG02- 04ER54742

OSTI ID:: 1469683

Alternate ID(s):: OSTI ID: 1238202

Journal Information:: Physics of Plasmas, Vol. 23, Issue 2; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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Breaking of dynamical adiabaticity in direct laser acceleration of electrons Robinson, A. P. L.; Arefiev, A. V. Physics of Plasmas, Vol. 24, Issue 2 https://doi.org/10.1063/1.4975076	journal	February 2017
Plasma block acceleration based upon the interaction between double targets and an ultra-intense linearly polarized laser pulse Xu, Yanxia; Wang, Jiaxiang; Hora, Heinrich Physics of Plasmas, Vol. 25, Issue 4 https://doi.org/10.1063/1.5024032	journal	April 2018
Direct laser acceleration of electrons in the plasma bubble by tightly focused laser pulses Wang, Tianhong; Khudik, Vladimir; Arefiev, Alexey Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5110407	journal	August 2019
Extreme nonlinear dynamics in vacuum laser acceleration with a crossed beam configuration Robinson, A. P. L.; Tangtartharakul, K.; Weichman, K. Physics of Plasmas, Vol. 26, Issue 9 https://doi.org/10.1063/1.5115993	journal	September 2019
Beyond the ponderomotive limit: direct laser acceleration of relativistic electrons in sub-critical plasmas Arefiev, A. V.; Khudik, V. N.; Robinson, A. P. L. arXiv https://doi.org/10.48550/arxiv.1602.08758	text	January 2016
Universal scalings for laser acceleration of electrons in ion channels Khudik, Vladimir; Arefiev, Alexey; Zhang, Xi arXiv https://doi.org/10.48550/arxiv.1603.04757	text	January 2016

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