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Title:
Characterization of the axial plasma shock in a table top plasma focus after the pinch and its possible application to testing materials for fusion reactors
Authors:
Soto, Leopoldo; Pavez, Cristian; Moreno, José; Inestrosa-Izurieta, María José; Veloso, Felipe; Gutiérrez, Gonzalo; Vergara, Julio; Clausse, Alejandro; Bruzzone, Horacio; Castillo, Fermín; Delgado-Aparicio, Luis F.
Affiliation:
AA(Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile; Centro de Investigación y Aplicaciones en Física de Plasmas y Potencia Pulsada, P, Santiago-Talca, Chile; Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, República 220, Santiago, Chile), AB(Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile; Centro de Investigación y Aplicaciones en Física de Plasmas y Potencia Pulsada, P, Santiago-Talca, Chile; Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, República 220, Santiago, Chile), AC(Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile; Centro de Investigación y Aplicaciones en Física de Plasmas y Potencia Pulsada, P, Santiago-Talca, Chile; Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, República 220, Santiago, Chile), AD(Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile; Centro de Investigación y Aplicaciones en Física de Plasmas y Potencia Pulsada, P, Santiago-Talca, Chile), AE(Instituto de Física, Pontificia Universidad Católica de Chile, Santiago, Chile), AF(Departamento de Física, Facultad de Ciencias, Universidad de Chile, Santiago, Chile), AG(Facultad de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile), AH(CNEA-CONICET and Universidad Nacional del Centro, 7000 Tandil, Argentina), AI(CONICET and Universidad de Mar del Plata, Mar del Plata, Argentina), AJ(Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico), AK(Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA)
Publication:
Physics of Plasmas, Volume 21, Issue 12, id.122703 (PhPl Homepage)
Publication Date:
12/2014
Origin:
AIP
Abstract Copyright:
2014: AIP Publishing LLC
DOI:
10.1063/1.4903471
Bibliographic Code:
2014PhPl...21l2703S

Abstract

The characterization of plasma bursts produced after the pinch phase in a plasma focus of hundreds of joules, using pulsed optical refractive techniques, is presented. A pulsed Nd-YAG laser at 532 nm and 8 ns FWHM pulse duration was used to obtain Schlieren images at different times of the plasma dynamics. The energy, interaction time with a target, and power flux of the plasma burst were assessed, providing useful information for the application of plasma focus devices for studying the effects of fusion-relevant pulses on material targets. In particular, it was found that damage factors on targets of the order of 104 (W/cm2)s1/2 can be obtained with a small plasma focus operating at hundred joules.
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