EPS 2019

P5.2010 Modelling of the non-local transport of energy in laser plasmas with high-order numerical methods

12 Jul 2019, 14:00

2h

Building U6 (University of Milano-Bicocca UNIMIB)

Poster P5

Speaker

J. Nikl (EPS 2019)

Description

See the full abstract here http://ocs.ciemat.es/EPS2019ABS/pdf/P5.2010.pdf

The description of the energy transport processes in the laser plasma is crucial for capturing the dynamics of the laser­target interaction relevant to shock ignition [1] and pre-pulses of ultra-intense lasers [2]. The diffusion approximation of the heat and radiation transport become inadequate even for the laser intensities 1015 W/cm2 in many cases [3]. The non-local nature of the transport phenomena must be considered due to long mean-free-paths of the heated electron species compared to the characteristic length of the plasma temperature variations. The shift in the physical models of plasmas must be reflected in the numerical treatment of the problem too. The high-order finite element methods present a favourable option. We have proposed such method recently [4] and continue in the effort towards better modelling and understanding of the non-local phenomena by means of numerical simulations.

References
[1] D. Batani, L. Antonelli, G. Folpini, Y. Maheut, L. Giuffrida, G. Malka, Ph. Nicolai, X. Ribeyre, M. Richetta, T. Levato, F. Baffigi, P. Koester, L. Labate, L.A. Gizzi, J. Nejdl, M. Sawicka, D. Margarone, A. Velyhan, M. Krus, O. Renner, M. Smid, E. Krousky, J. Skala, J. Ullschmied R. Dudzak, Ch. Spindloe, T. O'Dell, R.de Angelis, F. Consoliand T. Vinci, M. Rosinski, J. Badziak an T. Pisarczyk, Z. Kalinowska, T. Chodukowski, Y.J. Rhee, A. Marocchino, A. Schiavi, and S. Atzeni. Generation of high pressure shocks relevant to the shock-ignition intensity regime. Phys. Plasmas, 21:032710, 2014.
[2] M. Holec, J. Nikl, M. Vranic, and S. Weber. The effect of pre-plasma formation under nonlocal transport conditions for ultra-relativistic laser-plasma interaction. Plasma Physics and Controlled Fusion, 60(4):044019, 2018.
[3] A. V. Brantov and V. Yu. Bychenkov. Nonlocal transport in hot plasma. Part I. Plasma Physics Reports, 39(9):698­744, 2013.
[4] M. Holec, J. Nikl, and S. Weber. Nonlocal transport hydrodynamic model for laser heated plasmas. Physics of Plasmas, 25(3):032704, 2018.