摘要
This research work emphasizes the capability of delivering optically shaped targets through the interaction of nanosecond laser pulses with high-density gas-jet profiles,and explores proton acceleration in the near-critical density regime via magnetic vortex acceleration(MVA).Multiple blast waves(BWs)are generated by laser pulses that compress the gas-jet into near-critical steep gradient slabs of a few micrometres thickness.Geometrical alternatives for delivering the laser pulses into the gas target are explored to efficiently control the characteristics of the density profile.The shock front collisions of the generated BWs are computationally studied by 3D magnetohydrodynamic simulations.The efficiency of the proposed target shaping method for MVA is demonstrated for TW-class lasers by a particle-in-cell simulation.
基金
The authors acknowledge support of this work by the project‘ELI-LASERLAB Europe Synergy,HiPER&IPERIONCH.gr’(MIS 5002735),which is implemented under the action‘Reinforcement of the Research and Innovation Infrastructure’,funded by the Operational programme‘Competitiveness,Entrepreneurship and Innovation’(NSRF 2014-2020)and co-financed by Greece and the European Union(European Regional Development Fund)
supported by computational time granted by the Greek Research and Technology Network(GRNET)in the National HPC facility-ARIS-under project ID pr011027-LaMPIOS
This work has been carried out within the framework of the EUROfusion Consortium,funded by the European Union via the Euratom Research and Training Programme(grant agreement No.101052200-EUROfusion)
the Hellenic National Program of Controlled Thermonuclear Fusion.
