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Title: Design, construction, and calibration of a three-axis, high-frequency magnetic probe (B-dot probe) as a diagnostic for exploding plasmas

Abstract

A three-axis, 2.5 mm overall diameter differential magnetic probe (also known as B-dot probe) is discussed in detail from its design and construction to its calibration and use as diagnostic of fast transient effects in exploding plasmas. A design and construction method is presented as a means to reduce stray pickup, eliminate electrostatic pickup, reduce physical size, and increase magnetic signals while maintaining a high bandwidth. The probe's frequency response is measured in detail from 10 kHz to 50 MHz using the presented calibration method and compared to theory. The effect of the probe's self-induction as a first order correction in frequency, O({omega}), on experimental signals and magnetic field calculations is discussed. The probe's viability as a diagnostic is demonstrated by measuring the magnetic field compression and diamagnetism of a sub-Alfvenic ({approx}500 km/s,M{sub A}{approx}0.36) flow created from the explosion of a high-density energetic laser plasma through a cooler, low-density, magnetized ambient plasma.

Authors:
; ; ; ; ; ;  [1]
  1. Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095 (United States)
Publication Date:
OSTI Identifier:
22051084
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 80; Journal Issue: 11; Other Information: (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALIBRATION; CORRECTIONS; DESIGN; DIAMAGNETISM; EXPLOSIONS; HEAT EXCHANGERS; KHZ RANGE; LASER-PRODUCED PLASMA; MAGNETIC FIELDS; MAGNETIC PROBES; MHZ RANGE; PLASMA DENSITY

Citation Formats

Everson, E T, Pribyl, P, Constantin, C G, Zylstra, A, Schaeffer, D, Kugland, N L, and Niemann, C. Design, construction, and calibration of a three-axis, high-frequency magnetic probe (B-dot probe) as a diagnostic for exploding plasmas. United States: N. p., 2009. Web. doi:10.1063/1.3246785.
Everson, E T, Pribyl, P, Constantin, C G, Zylstra, A, Schaeffer, D, Kugland, N L, & Niemann, C. Design, construction, and calibration of a three-axis, high-frequency magnetic probe (B-dot probe) as a diagnostic for exploding plasmas. United States. https://doi.org/10.1063/1.3246785
Everson, E T, Pribyl, P, Constantin, C G, Zylstra, A, Schaeffer, D, Kugland, N L, and Niemann, C. 2009. "Design, construction, and calibration of a three-axis, high-frequency magnetic probe (B-dot probe) as a diagnostic for exploding plasmas". United States. https://doi.org/10.1063/1.3246785.
@article{osti_22051084,
title = {Design, construction, and calibration of a three-axis, high-frequency magnetic probe (B-dot probe) as a diagnostic for exploding plasmas},
author = {Everson, E T and Pribyl, P and Constantin, C G and Zylstra, A and Schaeffer, D and Kugland, N L and Niemann, C},
abstractNote = {A three-axis, 2.5 mm overall diameter differential magnetic probe (also known as B-dot probe) is discussed in detail from its design and construction to its calibration and use as diagnostic of fast transient effects in exploding plasmas. A design and construction method is presented as a means to reduce stray pickup, eliminate electrostatic pickup, reduce physical size, and increase magnetic signals while maintaining a high bandwidth. The probe's frequency response is measured in detail from 10 kHz to 50 MHz using the presented calibration method and compared to theory. The effect of the probe's self-induction as a first order correction in frequency, O({omega}), on experimental signals and magnetic field calculations is discussed. The probe's viability as a diagnostic is demonstrated by measuring the magnetic field compression and diamagnetism of a sub-Alfvenic ({approx}500 km/s,M{sub A}{approx}0.36) flow created from the explosion of a high-density energetic laser plasma through a cooler, low-density, magnetized ambient plasma.},
doi = {10.1063/1.3246785},
url = {https://www.osti.gov/biblio/22051084}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 80,
place = {United States},
year = {Sun Nov 15 00:00:00 EST 2009},
month = {Sun Nov 15 00:00:00 EST 2009}
}