Universal scalings for laser acceleration of electrons in ion channels

Khudik, Vladimir; Arefiev, Alexey; Zhang, Xi; Shvets, Gennady

doi:10.1063/1.4964901

Title: Universal scalings for laser acceleration of electrons in ion channels

Journal Article · Thu Oct 20 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4964901· OSTI ID:1465155

^[1];

^[2]; Zhang, Xi ^[1]; Shvets, Gennady ^[3]

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

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.

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Research Organization:: Univ. of Texas, Austin, TX (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); US Air Force Office of Scientific Research (AFOSR)

Grant/Contract Number:: SC0007889; SC0010622; FA9550-14-1-0045; NA0002723; NA0002008; FG02-04ER54742

OSTI ID:: 1465155

Alternate ID(s):: OSTI ID: 1329487

Journal Information:: Physics of Plasmas, Vol. 23, Issue 10; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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Title: Universal scalings for laser acceleration of electrons in ion channels

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