Imperial College London
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ProfessorSergeyLebedev

Faculty of Natural Sciences, Department of Physics

Professor of Plasma Physics
 
 
 
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Contact

 

+44 (0)20 7594 7748s.lebedev Website

 
 
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Location

 

743Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@unpublished{Hare:2020,
author = {Hare, JD and Burdiak, GC and Merlini, S and Chittenden, JP and Clayson, T and Crilly, AJ and Halliday, JWD and Russell, DR and Smith, RA and Stuart, N and Suttle, LG and Lebedev, SV},
publisher = {arXiv},
title = {An imaging refractometer for density fluctuation measurements in high  energy density plasmas},
url = {http://arxiv.org/abs/2007.04682v1},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - UNPB
AB  - We report on a recently developed laser-based diagnostic which allows directmeasurements of ray-deflection angles in one axis, whilst retaining imagingcapabilities in the other axis. This allows us to measure the spectrum ofangular deflections from a laser beam which passes though a turbulenthigh-energy-density plasma. This spectrum contains information about thedensity fluctuations within the plasma, which deflect the probing laser over arange of angles. The principle of this diagnostic is described, along with ourspecific experimental realisation. We create synthetic diagnostics usingray-tracing to compare this new diagnostic with standard shadowgraphy andschlieren imaging approaches, which demonstrates the enhanced sensitivity ofthis new diagnostic over standard techniques. We present experimental data fromturbulence behind a reverse shock in a plasma and demonstrate that thistechnique can measure angular deflections between 0.05 and 34 mrad,corresponding to a dynamic range of over 500.
AU  - Hare,JD
AU  - Burdiak,GC
AU  - Merlini,S
AU  - Chittenden,JP
AU  - Clayson,T
AU  - Crilly,AJ
AU  - Halliday,JWD
AU  - Russell,DR
AU  - Smith,RA
AU  - Stuart,N
AU  - Suttle,LG
AU  - Lebedev,SV
PB  - arXiv
PY  - 2020///
TI  - An imaging refractometer for density fluctuation measurements in high  energy density plasmas
UR  - http://arxiv.org/abs/2007.04682v1
UR  - http://hdl.handle.net/10044/1/80937
ER  -
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