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Title: Observation of impact of eddy current on laser targets in a strong fast rising magnetic field

Abstract

Pulsed power generators are capable of producing strong magnetic fields. Foil laser targets for high intensity interactions with matter were characterized in a strong magnetic field produced by different types of loads. Longitudinal magnetic fields generated by coil loads were measured by Faraday rotation of the polarization plane of laser beams in a small glass sample at two wavelengths. Magnetic fields of 0.8–1.5 MG were measured in different coil loads at 1 MA current. For the first time, the impact of eddy current generated by the fast rising magnetic field with dB/dt= 10 9 T/s was observed in Al laser targets using shadowgraphy and interferometry. Material of the Al 10 μm foil target expanded from both sides at 0.1–0.2 mm. This effect was not observed in dielectric targets. The impact of eddy current on targets is important for designing experiments for laser plasma interactions in strong magnetic fields.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Nevada, Reno, NV (United States)
  2. Raytheon Ktech, Albuquerque, NM (United States)
  3. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Nevada, Reno, NV (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1540136
Alternate Identifier(s):
OSTI ID: 1420638
Grant/Contract Number:  
NA0002075; SC0016500; NA 0002075
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 11; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics

Citation Formats

Ivanov, V. V., Swanson, K. J., Sarkisov, G. S., Maximov, A. V., Wiewior, P. P., Astanovitskiy, A. L., Nalajala, V., Chalyy, O., Dmitriev, O., and Wong, N. L. Observation of impact of eddy current on laser targets in a strong fast rising magnetic field. United States: N. p., 2017. Web. doi:10.1063/1.5008377.
Ivanov, V. V., Swanson, K. J., Sarkisov, G. S., Maximov, A. V., Wiewior, P. P., Astanovitskiy, A. L., Nalajala, V., Chalyy, O., Dmitriev, O., & Wong, N. L. Observation of impact of eddy current on laser targets in a strong fast rising magnetic field. United States. doi:10.1063/1.5008377.
Ivanov, V. V., Swanson, K. J., Sarkisov, G. S., Maximov, A. V., Wiewior, P. P., Astanovitskiy, A. L., Nalajala, V., Chalyy, O., Dmitriev, O., and Wong, N. L. Tue . "Observation of impact of eddy current on laser targets in a strong fast rising magnetic field". United States. doi:10.1063/1.5008377. https://www.osti.gov/servlets/purl/1540136.
@article{osti_1540136,
title = {Observation of impact of eddy current on laser targets in a strong fast rising magnetic field},
author = {Ivanov, V. V. and Swanson, K. J. and Sarkisov, G. S. and Maximov, A. V. and Wiewior, P. P. and Astanovitskiy, A. L. and Nalajala, V. and Chalyy, O. and Dmitriev, O. and Wong, N. L.},
abstractNote = {Pulsed power generators are capable of producing strong magnetic fields. Foil laser targets for high intensity interactions with matter were characterized in a strong magnetic field produced by different types of loads. Longitudinal magnetic fields generated by coil loads were measured by Faraday rotation of the polarization plane of laser beams in a small glass sample at two wavelengths. Magnetic fields of 0.8–1.5 MG were measured in different coil loads at 1 MA current. For the first time, the impact of eddy current generated by the fast rising magnetic field with dB/dt= 109 T/s was observed in Al laser targets using shadowgraphy and interferometry. Material of the Al 10 μm foil target expanded from both sides at 0.1–0.2 mm. This effect was not observed in dielectric targets. The impact of eddy current on targets is important for designing experiments for laser plasma interactions in strong magnetic fields.},
doi = {10.1063/1.5008377},
journal = {Physics of Plasmas},
number = 11,
volume = 24,
place = {United States},
year = {2017},
month = {11}
}

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