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Atoms 2018, 6(4), 60; https://doi.org/10.3390/atoms6040060

X-ray Spectroscopy Based Diagnostic of GigaGauss Magnetic Fields during Relativistic Laser-Plasma Interactions

1
LULI—Sorbonne Université-Campus Pierre et Marie Curie, CNRS, Ecole Polytechnique, CEA: Université Paris-Saclay, CEDEX 05, F-75252 Paris, France
2
206 Allison Lab, Physics Department, Auburn University, Auburn, AL 36849, USA
*
Author to whom correspondence should be addressed.
Received: 20 September 2018 / Revised: 31 October 2018 / Accepted: 1 November 2018 / Published: 6 November 2018
(This article belongs to the Special Issue Stark Broadening of Spectral Lines in Plasmas)
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Abstract

GigaGauss (GG), and even multi-GG magnetic fields are expected to be developed during relativistic laser-plasma interactions. Sub-GG magnetic fields were previously measured by a method using the self-generated harmonics of the laser frequency, and the fact that the magnetized plasma is birefringent and/or optically active depending on the propagation direction of the electromagnetic wave. In the present short communication, we outline an idea for a method of measuring GG magnetic fields based on the phenomenon of Langmuir-wave-caused dips (L-dips) in X-ray line profiles. The L-dips were observed in several experimental spectroscopic studies of relativistic laser-plasma interactions. Ultrastrong magnetic fields affect the separation of the L-dips from one another, so that this relative shift can be used to measure such fields. View Full-Text
Keywords: relativistic laser-plasma interactions; GigaGauss magnetic fields; X-ray spectral line profiles; Langmuir-wave-caused dips relativistic laser-plasma interactions; GigaGauss magnetic fields; X-ray spectral line profiles; Langmuir-wave-caused dips
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Dalimier, E.; Oks, E. X-ray Spectroscopy Based Diagnostic of GigaGauss Magnetic Fields during Relativistic Laser-Plasma Interactions. Atoms 2018, 6, 60.

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