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Dr Remi Capdessus

Research Associate

Physics

Publications

Modelling the effect of the radiation reaction force on the acceleration of ultra-thin foils
Duff M. J., Capdessus R., King M., Del Sorbo D., Ridgers C. P., McKenna P.
Proc. SPIE 10241, Research Using Extreme LightProceedings of SPIE Vol 10241, (2017)
http://dx.doi.org/10.1117/12.2267424
Ion acceleration with radiation pressure in quantum electrodynamic regimes
Del Sorbo Dario, Blackman David R., Capdessus Remi, Small Kristina, Slade-Lowther Cody, Luo Wen, Duff Matthew James, Robinson A. P. L., McKenna Paul, Sheng Zheng-Ming, Pasley John, Ridgers Christopher
Proc. SPIE 10241, Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers III, (2017)
http://dx.doi.org/10.1117/12.2271137
Radiating electron source generation in ultraintense laser-foil interactions
Capdessus R., King M., McKenna P.
Physics of Plasmas Vol 23, (2016)
http://dx.doi.org/10.1063/1.4960682
Energy exchange via multi-species streaming in laser-driven ion acceleration
King M., Gray R. J., Powell H. W., Capdessus R., McKenna P.
Plasma Physics and Controlled Fusion, (2016)
Intra-pulse transition between ion acceleration mechanisms in intense laser-foil interactions
Padda H., King M., Gray R. J., Powell H. W., Izquierdo Bruno, Stockhausen L. C., Wilson R., Carroll D. C., Dance R. J., MacLellan D. A., Yuan X. H., Butler N. M. H., Capdessus R., Borghesi M., Neely D., McKenna P.
Physics of Plasmas Vol 23, (2016)
http://dx.doi.org/10.1063/1.4954654
Erratum : Role of momentum and velocity for radiating electrons (Physical Review D - Particles, Fields, Gravitation and Cosmology (2016) 93 (045034))
Capdessus Rémi, Noble Adam, McKenna Paul, Jaroszynski Dino A.
Physical Reveiw D: Particles, Fields, Gravitation & Cosmology Vol 93, (2016)
http://dx.doi.org/10.1103/PhysRevD.93.089908

more publications

Professional activities

Annalen der Physik (Journal)
Peer reviewer
30/11/2016
25th annual International Laser Physics Workshop
Speaker
11/7/2016
Workshop on the SAC Apollon
Participant
9/9/2015
Extremely High Intensity Laser Physics conference
Speaker
21/7/2015
Physics Letters A (Journal)
Peer reviewer
7/2015
New Journal of Physics (Journal)
Peer reviewer
19/5/2015

more professional activities

Projects

Theoretical and numerical investigations of collective effects in extreme laser-plasma interactions
Capdessus, Remi (Fellow)
"The proposed research project focuses on theoretical and numerical investigations of the physics of laser-matter interaction at ultra-high laser intensities, in the range 10^22-10^24 W/cm^2. These intensities will soon be achievable at multi-petawatt laser facilities, such as the 800MEuro extreme light infrastructure (ELI) and APOLLON-10P. These facilities will enable the exploration of new fundamental physical processes such as radiation reaction, relativistic electron dynamics, electron-positron pair production and the generation of relativistic ions. Electrons produce significant synchrotron radiation at laser intensities above 10^22 W/cm^2 giving rise to the radiation reaction force that strongly affects the photon emission spectrum and the overall plasma dynamics. Due to the intense electromagnetic fields involved, quantum effects will become important for laser intensities above 10^23W/cm^2, resulting in the production of copious amounts of electron-positron pairs. My proposal aims to explore the underpinning physics of these proposes theoretically and numerically. The results will be used to guide the design and interpretation of related experiments using these new ultraintense laser systems.

The proposed research project opens up new directions in ultra-relativistic plasmas that are subject to quantum electrodynamics (QED) processes. For example, to date, the role of the plasma ions on the high energy synchrotron radiation and electron-positron pair production, is poorly understood and has never been explored experimentally. It is often suggested that the interaction of a short laser pulse with plasmas is dominated by the electron dynamics and that the ions play a secondary role due to the longer timescales over which they react. Although this may be true for lower laser intensities, the situation becomes more complicated in the case of ultra-relativistic laser pulses for which the quiver electron energy could be comparable with the ion rest mass. The collective effects driven by the ion response will be investigated in both semi-classical plasmas and quantum plasmas. A kinetic theory of laser energy absorption accounting for ion response will be developed over this proposed research project. Future experiments, which will test the predictions of the theory and simulations, will also be designed.

The project involves collaboration with a number of leading researchers in high field laser-plasma interaction physics, both in the UK and in Europe. It also involves a close collaboration with an experimental team at the University of Strathclyde and with the ELI-NP high field science working group."
Period 01-Jan-2017 - 31-Dec-2019

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