Measurements of Early-Time Plasma Evolution in the Hawk Dense Plasma Focus

Autor: A. S. Richardson, Evgeny Stambulchik, Daniel Klir, J.W. Schumer, Yitzhak Maron, Karel Rezac, Ian M. Rittersdorf, B.V. Weber, John Giuliani, Jakub Cikhardt, J. T. Engelbrecht, Andrey Beresnyak, Stuart L. Jackson
Rok vydání: 2018
Předmět:
Zdroj: 2018 IEEE International Conference on Plasma Science (ICOPS).
Popis: The 650 kA Hawk pulsed power generator at NRL has been configured as a fast (1.2 μs), high in ductance (607 nH) driver for a dense plasma focus load. The current pulse is initiated in a radially injected deuterium plasma. This plasma is accelerated through a coaxial region, and pinches onto neutral deuterium injected axially by a gas-puff valve. A ribbon beam interferometer is used to diagnose the plasma in the coaxial region at several radii, providing time resolved electron density measurements through the initiation and axial run-down phases of the implosion. We present interferometry results alongside imaging, spectroscopic, electrical, and radiation measurements that track the evolution of the imploding current sheath.
Databáze: OpenAIRE