Zobrazeno 1 - 10
of 576
pro vyhledávání: '"Thomas, A. G. R."'
Autor:
Peskosky, Nicholas, Ernst, Nicholas, Burger, Miloš, Murphy, Jon, Nees, John A., Jovanovic, Igor, Thomas, Alec G. R., Krushelnick, Karl
We experimentally demonstrate enhanced absorption of near relativistic optical vortex beams in $\mathrm{D_2O}$ plasmas to generate a record fast-neutron yield of $1.45 \times 10^6$ n/s/sr. Beams with a topological charge of 5 were shown to deliver up
Externí odkaz:
http://arxiv.org/abs/2405.12330
In this article we investigate novel signatures of radiation reaction via the angular deflection of an electron beam colliding at 90 degrees with an intense laser pulse. Due to the radiation reaction effect, the electrons can be deflected towards the
Externí odkaz:
http://arxiv.org/abs/2403.07455
Autor:
Tang, H., Tangtartharakul, K., Babjak, R., Yeh, I-L., Albert, F., Chen, H., Campbell, P. T., Ma, Y., Nilson, P. M., Russell, B. K., Shaw, J. L., Thomas, A. G. R., Vranic, M., Arefiev, A. V., Willingale, L.
Direct Laser Acceleration (DLA) of electrons during a high-energy, picosecond laser interaction with an underdense plasma has been demonstrated to be substantially enhanced by controlling the laser focusing geometry. Experiments using the OMEGA EP fa
Externí odkaz:
http://arxiv.org/abs/2402.08026
Spatiotemporal control encompasses a variety of techniques for producing laser pulses with dynamic intensity peaks that move independently of the group velocity. This controlled motion of the intensity peak offers a new approach to optimizing laser-b
Externí odkaz:
http://arxiv.org/abs/2312.12188
Autor:
Bulanov, S. V., Grittani, G. M., Shaisultanov, R., Esirkepov, T. Zh., Ridgers, C. P., Bulanov, S. S., Russell, B. K., Thomas, A. G. R.
Radiative cooling of electron beams interacting with counter-propagating electromagnetic waves is analyzed, taking into account the quantum modification of the radiation friction force. Central attention is paid to the evolution of the energy spectru
Externí odkaz:
http://arxiv.org/abs/2310.15623
Autor:
Russell, Brandon K., Vranic, Marija, Campbell, Paul T., Thomas, Alexander G. R., Schoeffler, Kevin M., Uzdensky, Dmitri A., Willingale, Louise
Magnetic field generation in ultra-intense laser-solid interactions is studied over a range of laser intensities relevant to next-generation laser facilities ($a_0 = 50-500$) using 2D particle-in-cell simulations. It is found that fields on the order
Externí odkaz:
http://arxiv.org/abs/2309.05141
Autor:
Seipt, Daniel, Thomas, Alec G. R.
The investigation of spin and polarization effects in ultra-high intensity laser-plasma and laser-beam interactions has become an emergent topic in high-field science recently. In this paper we derive a relativistic kinetic description of spin-polari
Externí odkaz:
http://arxiv.org/abs/2307.02114
Autor:
Qian, Qian, Seipt, Daniel, Vranic, Marija, Grismayer, Thomas E., Blackburn, Tom G., Ridgers, Christopher P., Thomas, Alexander G. R.
With the rapid development of high-power petawatt class lasers worldwide, exploring physics in the strong field QED regime will become one of the frontiers for laser-plasma interactions research. Particle-in-cell codes, including quantum emission pro
Externí odkaz:
http://arxiv.org/abs/2306.16706
Solving fluid dynamics equations often requires the use of closure relations that account for missing microphysics. For example, when solving equations related to fluid dynamics for systems with a large Reynolds number, sub-grid effects become import
Externí odkaz:
http://arxiv.org/abs/2306.10709
Autor:
Kettle, B., Colgan, C., Los, E., Gerstmayr, E., Streeter, M. J. V., Albert, F., Astbury, S., Baggott, R. A., Cavanagh, N., Falk, K., Hyde, T. I., Lundh, O., Rajeev, P. P., Riley, D., Rose, S. J., Sarri, G., Spindloe, C., Svendsen, K., Symes, D. R., Smid, M., Thomas, A. G. R., Thornton, C., Watt, R., Mangles, S. P. D.
Laser-driven compact particle accelerators can provide ultrashort pulses of broadband X-rays, well suited for undertaking X-ray absorption spectroscopy measurements on a femtosecond timescale. Here the Extended X-ray Absorption Fine Structure (EXAFS)
Externí odkaz:
http://arxiv.org/abs/2305.10123