TY - JOUR
T1 - Compact explosive-driven generator of primary power based on a longitudinal shock wave demagnetization of hard ferri- and ferromagnets
AU - Shkuratov, Sergey I.
AU - Talantsev, Evgueni F.
AU - Dickens, James C.
AU - Kristiansen, Magne
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002/10
Y1 - 2002/10
N2 - A new type of compact explosive-driven generator of primary power, which utilizes phenomena of a shock wave demagnetization of hard ferri- and ferromagnets, was developed. The shock wave initiated by high explosive, as well as accelerated flyer plate, passes along the hard ferri- or ferromagnetic body, which serves as initial energy carrier. The shock wave demagnetizes the energy-carrying element, reducing the initial magnetic flux Φ0. In accordance with Faraday's law, this change of magnetic flux Δ Φ0 generates an electromotive force in a coil wound on the energy carrier. Several types of compact generators with energy-carrying element of 10 cm3 in volume were explored. High-voltage generators that utilize energy of BaFe12O19 hard ferrimagnets are capable of producing pulses of amplitude 5.5 kV with full width at half maximum (FWHM) of 1 μs. The generators that utilize energy of Nd2Fe14B high-energy hard ferromagnets are capable of producing pulses with amplitude more than 10 kV and FWHM about 5 μs. The high-current generators based on Nd2Fe14B produced pulses yielded 826 A and FWHM of 180 μs. The developed generator can be used as the most reliable and effective source of primary power capable of seeding magnetocumulative generators.
AB - A new type of compact explosive-driven generator of primary power, which utilizes phenomena of a shock wave demagnetization of hard ferri- and ferromagnets, was developed. The shock wave initiated by high explosive, as well as accelerated flyer plate, passes along the hard ferri- or ferromagnetic body, which serves as initial energy carrier. The shock wave demagnetizes the energy-carrying element, reducing the initial magnetic flux Φ0. In accordance with Faraday's law, this change of magnetic flux Δ Φ0 generates an electromotive force in a coil wound on the energy carrier. Several types of compact generators with energy-carrying element of 10 cm3 in volume were explored. High-voltage generators that utilize energy of BaFe12O19 hard ferrimagnets are capable of producing pulses of amplitude 5.5 kV with full width at half maximum (FWHM) of 1 μs. The generators that utilize energy of Nd2Fe14B high-energy hard ferromagnets are capable of producing pulses with amplitude more than 10 kV and FWHM about 5 μs. The high-current generators based on Nd2Fe14B produced pulses yielded 826 A and FWHM of 180 μs. The developed generator can be used as the most reliable and effective source of primary power capable of seeding magnetocumulative generators.
KW - Hard-ferromagnetic materials
KW - Pulsed-power generation
KW - Shock waves
UR - http://www.scopus.com/inward/record.url?scp=0036826776&partnerID=8YFLogxK
U2 - 10.1109/TPS.2002.806638
DO - 10.1109/TPS.2002.806638
M3 - Article
AN - SCOPUS:0036826776
VL - 30
SP - 1681
EP - 1691
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 5 I
ER -