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      Peta-Pascal Pressure Driven by Fast Isochoric Heating with Multi-Picosecond Intense Laser Pulse

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          Abstract

          Fast isochoric laser heating is a scheme to heat a matter with relativistic-intensity (\(>\) 10\(^{18}\) W/cm\(^2\)) laser pulse or X-ray free electron laser pulse. The fast isochoric laser heating has been studied for creating efficiently ultra-high-energy-density (UHED) state. We demonstrate an fast isochoric heating of an imploded dense plasma using a multi-picosecond kJ-class petawatt laser with an assistance of externally applied kilo-tesla magnetic fields for guiding fast electrons to the dense plasma.The UHED state with 2.2 Peta-Pascal is achieved experimentally with 4.6 kJ of total laser energy that is one order of magnitude lower than the energy used in the conventional implosion scheme. A two-dimensional particle-in-cell simulation reveals that diffusive heating from a laser-plasma interaction zone to the dense plasma plays an essential role to the efficient creation of the UHED state.

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          Author and article information

          Journal
          24 July 2019
          Article
          1907.10447
          1835c257-6d09-4bfb-813a-2f39fc52d011

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Custom metadata
          8 pages, 4 figures, 1 table
          physics.plasm-ph

          Plasma physics
          Plasma physics

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