Top arrow pointing up

Resources

Resources

Enhancements in laser-generated hot-electron production via focusing cone targets at short pulse and high contrast

May 14, 2021. Publications

Abstract

We report on the increase in the accelerated electron number and energy using compound parabolic concentrator (CPC) targets from a short-pulse (∼150 fs), high-intensity (>1018 W/cm2), and high-contrast (∼108) laser-solid interaction. We report on experimental measurements using CPC targets where the hot-electron temperature is enhanced up to ∼9 times when compared to planar targets. The temperature measured from the CPC target is ⟨Te⟩=4.4±1.3 MeV. Using hydrodynamic and particle in cell simulations, we identify the primary source of this temperature enhancement is the intensity increase caused by the CPC geometry that focuses the laser, reducing the focal spot and therefore increasing the intensity of the laser-solid interaction, which is also consistent with analytic expectations for the geometrical focusing.

D. R. Rusby, P. M. King, A. Pak, N. Lemos, S. Kerr, G. Cochran, I. Pagano, A. Hannasch, H. Quevedo, M. Spinks, M. Donovan, A. Link, A. Kemp, S. C. Wilks, G. J. Williams, M. J.-E. Manuel, Z. Gavin, A. Haid, F. Albert, M. Aufderheide, H. Chen, C. W. Siders, A. Macphee, and A. Mackinnon

Phys. Rev. E 103, 053207 (2021); DOI: https://doi.org/10.1103/PhysRevE.103.053207

More From Publications

Sep 17, 2021    Publications

Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

Citation H G Rinderknecht et al 2021 New J. Phys. 23 095009

Read more

Aug 5, 2021    Publications

Electron energization during merging of self-magnetized, high-beta, laser-produced plasmas

Journal of Plasma Physics, Volume 87, Issue 4, August 2021, 905870411

Read more

Jun 18, 2021    Publications

Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

Review of Scientific Instruments 92, 065110 (2021)

Read more

Oct 8, 2020    Publications

Enhanced spatial resolution of Eljen-204 plastic scintillators for use in rep-rated proton diagnostics

M. J.-E. Manuel et al, Rev. Sci. Instrum. 91, 103301 (2020)

Read more

Sep 17, 2020    Publications

Optimization of radiochromic film stacks to diagnose high-flux laser-accelerated proton beams

Review of Scientific Instruments 91, 093303 (2020)

Read more

May 26, 2020    Publications

Relativistic plasma physics in supercritical fields

Physics of Plasmas 27, 050601 (2020)

Read more