Oxford Centre for High Energy Density Science (OxCHEDS)

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Simulations of x-ray diffraction from uniaxially-compressed highly-textured polycrystalline targets

(2015)

Authors:

David McGonegle, Despina Milathianaki, Bruce A Remington, Justin S Wark, Andrew Higginbotham
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Saturable Absorption of an X-Ray Free-Electron-Laser Heated Solid-Density Aluminum Plasma

Physical Review Letters American Physical Society (APS) 114:1 (2015) 015003

Authors:

DS Rackstraw, O Ciricosta, SM Vinko, B Barbrel, T Burian, J Chalupský, BI Cho, H-K Chung, GL Dakovski, K Engelhorn, V Hájková, P Heimann, M Holmes, L Juha, J Krzywinski, RW Lee, S Toleikis, JJ Turner, U Zastrau, JS Wark
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Generation of high-flux neutron beam from radiation pressure driven deuterium ion bunches

42nd European Physical Society Conference on Plasma Physics, EPS 2015 (2015)

Authors:

A Alejo, S Kar, H Ahmed, AG Krygier, R Clarke, RR Freeman, J Fuchs, A Green, JS Green, D Jung, A Kleinschmidt, JT Morrison, Z Najmudin, H Nakamura, P Norreys, M Notley, M Oliver, M Roth, L Vassura, M Zepf, M Borghesi

Pellet ignition using ions shock accelerated in the corona

42nd European Physical Society Conference on Plasma Physics, EPS 2015 (2015)

Authors:

RA Cairns, E Boella, M Vranic, LO Silva, R Trines, P Norreys, R Bingham

Quantitative single shot and spatially resolved plasma wakefield diagnostics

Physical Review Special Topics: Accelerators and Beams American Physical Society 18:8 (2015)

Authors:

Muhammad Kasim, James Holloway, Luke Ceurvorst, Matthew C Levy, Naren Ratan, James Sadler, Robert Bingham, Philip Burrows, Raoul Trines, Matthew Wing, Peter Norreys

Abstract:

Diagnosing plasma conditions can give great advantages in optimizing plasma wakefield accelerator experiments. One possible method is that of photon acceleration. By propagating a laser probe pulse through a plasma wakefield and extracting the imposed frequency modulation, one can obtain an image of the density modulation of the wakefield. In order to diagnose the wakefield parameters at a chosen point in the plasma, the probe pulse crosses the plasma at oblique angles relative to the wakefield. In this paper, mathematical expressions relating the frequency modulation of the laser pulse and the wakefield density profile of the plasma for oblique crossing angles are derived. Multidimensional particle-in-cell simulation results presented in this paper confirm that the frequency modulation profiles and the density modulation profiles agree to within 10%. Limitations to the accuracy of the measurement are discussed in this paper. This technique opens new possibilities to quantitatively diagnose the plasma wakefield density at known positions within the plasma column.
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