Laboratory astroparticle physics

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The Thomson scattering cross section in a magnetized, high density plasma

(2019)

Authors:

Archie FA Bott, Gianluca Gregori
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Erratum: "Setup for meV-resolution inelastic X-ray scattering measurements and X-ray diffraction at the Matter in Extreme Conditions endstation at the Linac Coherent Light Source" [Rev. Sci. Instrum. 89, 10F104 (2018)].

The Review of scientific instruments 89:12 (2018) 129901-129901

Authors:

EE McBride, TG White, A Descamps, LB Fletcher, K Appel, F Condamine, CB Curry, F Dallari, S Funk, E Galtier, EJ Gamboa, M Gauthier, S Goede, JB Kim, HJ Lee, BK Ofori-Okai, M Oliver, A Rigby, C Schoenwaelder, P Sun, Th Tschentscher, BBL Witte, U Zastrau, G Gregori, B Nagler, J Hastings, SH Glenzer, G Monaco
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Fast Non-Adiabatic Dynamics of Many-Body Quantum Systems

(2018)

Authors:

Brett Larder, Dirk Gericke, Scott Richardson, Paul Mabey, Thomas White, Gianluca Gregori
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Analytical estimates of proton acceleration in laser-produced turbulent plasmas

Journal of Plasma Physics Cambridge University Press (CUP) 84:6 (2018) 905840608

Authors:

Konstantin Beyer, Brian Reville, Archie Bott, Hye-Sook Park, Subir Sarkar, Gianluca Gregori

Abstract:

With the advent of high power lasers, new opportunities have opened up for simulating astrophysical processes in the laboratory. We show that 2nd-order Fermi acceleration can be directly investigated at the National Ignition Facility, Livermore. This requires measuring the momentum-space diffusion of 3 MeV protons produced within a turbulent plasma generated by a laser. Treating Fermi acceleration as a biased diffusion process, we show analytically that a measurable broadening of the initial proton distribution is then expected for particles exiting the plasma.
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Implementation of a Faraday rotation diagnostic at the OMEGA laser facility

High Power Laser Science and Engineering Cambridge University Press 6:2018 (2018) e49

Authors:

Alexander Rigby, Archie Bott, Thomas White, Petros Tzeferacos, DQ Lamb, DH Froula, Gianluca Gregori

Abstract:

Magnetic field measurements in turbulent plasmas are often difficult to perform. Here we show that for ⩾ kG magnetic fields, a time-resolved Faraday rotation measurement can be made at the OMEGA laser facility. This diagnostic has been implemented using the Thomson scattering probe beam and the resultant path-integrated magnetic field has been compared with that of proton radiography. Accurate measurement of magnetic fields is essential for satisfying the scientific goals of many current laser–plasma experiments.
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