Oxford Centre for High Energy Density Science (OxCHEDS)

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Nonlinear parametric resonance of relativistic electrons with a linearly polarized laser pulse in a plasma channel

Physics of Plasmas 24:4 (2017)

Authors:

TW Huang, CT Zhou, APL Robinson, B Qiao, AV Arefiev, PA Norreys, XT He, SC Ruan

Abstract:

漏 2017 Author(s). The direct laser-acceleration mechanism, nonlinear parametric resonance, of relativistic electrons in a linearly polarized laser-produced plasma channel is examined by a self-consistent model including the relativistic laser dispersion in plasmas. Nonlinear parametric resonance can be excited, and the oscillation amplitude of electrons grows exponentially when the betatron frequency of electron motion varies roughly twice the natural frequency of the oscillator. It is shown analytically that the region of parametric resonance is defined by the self-similar parameter n e /n c a 0 . The width of this region decreases with n e /n c a 0 , but the energy gain and oscillation amplitude increases. In this regime, the electron transverse momentum grows faster than that in the linear classical resonance regime.

Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

PHYSICS OF PLASMAS 24:4 (2017) ARTN 041404

Authors:

P Tzeferacos, A Rigby, A Bott, AR Bell, R Bingham, A Casner, F Cattaneo, EM Churazov, J Emig, N Flocke, F Fiuza, CB Forest, J Foster, C Graziani, J Katz, M Koenig, C-K Li, J Meinecke, R Petrasso, H-S Park, BA Remington, JS Ross, D Ryu, D Ryutov, K Weide, TG White, B Reville, F Miniati, AA Schekochihin, DH Froula, G Gregori, DQ Lamb

Combined visible and near-infrared OPA for wavelength scaling experiments in strong-field physics

(2017)

Authors:

David T Lloyd, Kevin O'Keeffe, Adam S Wyatt, Patrick N Anderson, Daniel Treacher, Simon M Hooker

Atomic processes modeling of X-ray free electron laser produced plasmas using SCFLY code

ATOMIC PROCESSES IN PLASMAS (APIP 2016) 1811 (2017)

Authors:

H-K Chung, BI Cho, O Ciricosta, SM Vinko, JS Wark, RW Lee

Measurements of plasma spectra from hot dense elements and mixtures at conditions relevant to the solar radiative zone.

ATOMIC PROCESSES IN PLASMAS (APIP 2016) 1811 (2017)

Authors:

DJ Hoarty, E Hill, P Beiersdorfer, P Allan, CRD Brown, MP Hill, LMR Hobbs, SF James, J Morton, N Sircombe, L Upcraft, JWO Harris, R Shepherd, E Marley, E Magee, J Emig, J Nilsen, SJ Rose