The transient internal probe: A novel method for measuring internal magnetic field profiles

M. A. Bohnet, J. P. Galambos, T. R. Jarboe, A. T. Mattick, G. G. Spanjers

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The transient internal probe (TIP) diagnostic is designed to permit internal magnetic field measurements in hot, high density plasmas. A small probe is fired through the plasma at high velocities and magnetic field measurements are accomplished using Faraday rotation within the Verdet glass probe. Magnetic field resolution of ±40 G and spatial resolution of 5 mm have been achieved. System frequency response is 10 MHz. Ablative effects are avoided by minimizing both the probe size and the time the probe spends in the plasma. A two-stage light-gas gun is used to accelerate the probe (held by a sabot) to 2.2 km/s. The sabot is removed using gas dynamic forces and a gas interface system prevents the helium muzzle gas from entering the plasma chamber. Work is underway to integrate the TIP diagnostic with laboratory plasma experiments.

Original languageEnglish (US)
Pages (from-to)1197-1200
Number of pages4
JournalReview of Scientific Instruments
Volume66
Issue number2
DOIs
StatePublished - Dec 1 1995

All Science Journal Classification (ASJC) codes

  • Instrumentation

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    Bohnet, M. A., Galambos, J. P., Jarboe, T. R., Mattick, A. T., & Spanjers, G. G. (1995). The transient internal probe: A novel method for measuring internal magnetic field profiles. Review of Scientific Instruments, 66(2), 1197-1200. https://doi.org/10.1063/1.1146005