INFINA (EX INFIP) 05545
INSTITUTO DE FISICA INTERDISCIPLINARIA Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Correcting magnetic probe perturbations on current density measurements of current carrying plasmas
Autor/es:
P. KNOBLAUCH, V. RASPA, F. DI LORENZO, A. LAZARTE, A. CLAUSSE, AND C. MORENO
Revista:
REVIEW OF SCIENTIFIC INSTRUMENTS
Editorial:
AMER INST PHYSICS
Referencias:
Año: 2010 vol. 81 p. 1 - 6
ISSN:
0034-6748
Resumen:
A method to infer the current density distribution in the current sheath of a plasma focus discharge from a magnetic probe is formulated and then applied to experimental data obtained in a 1.1 kJ device. Distortions on the magnetic probe signal caused by current redistribution and by a time-dependent total discharge current are considered simultaneously, leading to an integral equation for the current density. Two distinct, easy to implement, numerical procedures are given to solve such equation. Experimental results show the coexistence of at least two maxima in the current density structure of a nitrogen sheath.
