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Title: Transparency of Magnetized Plasma at Cyclotron Frequency

Abstract

Electromagnetic radiation is strongly absorbed by a magnetized plasma if the radiation frequency equals the cyclotron frequency of plasma electrons. It is demonstrated that absorption can be completely canceled in the presence of a magnetostatic field of an undulator or a second radiation beam, resulting in plasma transparency at the cyclotron frequency. This effect is reminiscent of the electromagnetically induced transparency (EIT) of the three-level atomic systems, except that it occurs in a completely classical plasma. Unlike the atomic systems, where all the excited levels required for EIT exist in each atom, this classical EIT requires the excitation of the nonlocal plasma oscillation. The complexity of the plasma system results in an index of refraction at the cyclotron frequency that differs from unity. Lagrangian description was used to elucidate the physics and enable numerical simulation of the plasma transparency and control of group and phase velocity. This control naturally leads to applications for electromagnetic pulse compression in the plasma and electron/ion acceleration.

Authors:
;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
796221
Report Number(s):
PPPL-3680.pdf
TRN: US0201488
DOE Contract Number:
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 14 Mar 2002
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRON FREQUENCY; ELECTROMAGNETIC PULSES; ELECTROMAGNETIC RADIATION; LAGRANGIAN FUNCTION; PHASE VELOCITY; PLASMA; PLASMA WAVES; WIGGLER MAGNETS

Citation Formats

G. Shvets, and J.S. Wurtele. Transparency of Magnetized Plasma at Cyclotron Frequency. United States: N. p., 2002. Web. doi:10.2172/796221.
G. Shvets, & J.S. Wurtele. Transparency of Magnetized Plasma at Cyclotron Frequency. United States. doi:10.2172/796221.
G. Shvets, and J.S. Wurtele. Thu . "Transparency of Magnetized Plasma at Cyclotron Frequency". United States. doi:10.2172/796221. https://www.osti.gov/servlets/purl/796221.
@article{osti_796221,
title = {Transparency of Magnetized Plasma at Cyclotron Frequency},
author = {G. Shvets and J.S. Wurtele},
abstractNote = {Electromagnetic radiation is strongly absorbed by a magnetized plasma if the radiation frequency equals the cyclotron frequency of plasma electrons. It is demonstrated that absorption can be completely canceled in the presence of a magnetostatic field of an undulator or a second radiation beam, resulting in plasma transparency at the cyclotron frequency. This effect is reminiscent of the electromagnetically induced transparency (EIT) of the three-level atomic systems, except that it occurs in a completely classical plasma. Unlike the atomic systems, where all the excited levels required for EIT exist in each atom, this classical EIT requires the excitation of the nonlocal plasma oscillation. The complexity of the plasma system results in an index of refraction at the cyclotron frequency that differs from unity. Lagrangian description was used to elucidate the physics and enable numerical simulation of the plasma transparency and control of group and phase velocity. This control naturally leads to applications for electromagnetic pulse compression in the plasma and electron/ion acceleration.},
doi = {10.2172/796221},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 14 00:00:00 EST 2002},
month = {Thu Mar 14 00:00:00 EST 2002}
}

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