Some aspects of the design of a target for the absolute measurement of Equation-of-State data at pressure of tens of Mbar, in optically thick materials are discussed. In the proposed experiment, a shock wave is generated in a laser-irradiated sample, and the shock velocity and the material velocity behind the shock are simultaneously measured by the optical and X-ray diagnostics. Accurate measurements require the generation of a steady, planar shock, and the detection of the motion of a shocked fluid interface by transverse radiography. One- and two-dimensional numerical fluid simulations have been performed to optimize beam and target design, in order to fulfil such requirements.
Design of Absolute Equation of State Measurements in Optically Thick Materials by Laser Driven Shock Waves / Temporal, M; Atzeni, Stefano; Batani, D; Koenig, M; Benuzzi, A; Faral, B.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 415:(1998), pp. 668-673. (Intervento presentato al convegno Combined Symposium on Heavy Ion Inertial Fusion / Workshop in Atomic Physics for Ion Beam Fusion tenutosi a Heidelberg, Germany nel 22–27 Sep. 1997) [10.1016/S0168-9002(98)00445-8].
Design of Absolute Equation of State Measurements in Optically Thick Materials by Laser Driven Shock Waves
ATZENI, Stefano;
1998
Abstract
Some aspects of the design of a target for the absolute measurement of Equation-of-State data at pressure of tens of Mbar, in optically thick materials are discussed. In the proposed experiment, a shock wave is generated in a laser-irradiated sample, and the shock velocity and the material velocity behind the shock are simultaneously measured by the optical and X-ray diagnostics. Accurate measurements require the generation of a steady, planar shock, and the detection of the motion of a shocked fluid interface by transverse radiography. One- and two-dimensional numerical fluid simulations have been performed to optimize beam and target design, in order to fulfil such requirements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
