Simulations of nested wire arrays Z-pinch implosion
نویسندگان
چکیده
منابع مشابه
Simulations of the implosion and stagnation of compact wire arrays
Wire array z-pinches have been used successfully for many years as a powerful x-ray source, as a dynamic hohlraum, and as an intense K-shell radiation source. Significant progress has been made in the effective modeling of these three-dimensional 3D resistive plasmas. However, successful modeling also requires an accurate representation of the power delivered to these loads from the generator, ...
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The observation of Doppler splitting in K-shell x-ray lines emitted from optically thin dopants is used to infer implosion velocities of up to 70 cm/μs in wire-array and gas-puff Z pinches at drive currents of 15-20 MA. These data can benchmark numerical implosion models, which produce reasonable agreement with the measured velocity in the emitting region. Doppler splitting is obscured in lines...
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A high-resolution finite element method is developed for numerical simulation of Z-pinch-like implosions using a phenomenological model for the magnetic drive source term. The momentum and energy equations of the Euler system are extended by adding radial body forces proportional to the concentration of a scalar tracer field. The evolution of the tracer is governed by an additional transport eq...
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We show that ultradense Z pinches with nanoscale dimensions can be generated by irradiating aligned nanowires with femtosecond laser pulses of relativistic intensity. Using fully three-dimensional relativistic particle-in-cell simulations, we demonstrate that the laser pulse drives a forward electron current in the area around the wires. This forward current induces return current densities of ...
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ژورنال
عنوان ژورنال: Keldysh Institute Preprints
سال: 2018
ISSN: 2071-2898,2071-2901
DOI: 10.20948/prepr-2018-192