Single shot, temporally and spatially resolved measurements of fast electron dynamics using a chirped optical probe

A new approach to rear surface optical probing is presented that permits multiple, time-resolved 2D measurements to be made during a single, ultra-intense (> 10 super(18)W cm super(-2)) laserplasma interaction. The diagnostic is capable of resolving rapid changes in target reflectivity which can...

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Bibliographic Details
Published in:Journal of instrumentation 2014-03, Vol.9 (3), p.P03003-P03003
Main Authors: Green, J S, Murphy, C D, Booth, N, Dance, R J, Gray, R J, MacLellan, D A, McKenna, P, Rusby, D, Wilson, L
Format: Article
Language:English
Subjects:
Diagnostic systems
Dynamics
Evolution
Formations
Instrumentation
Lasers
Reflectivity
Shot
Two dimensional
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Summary:A new approach to rear surface optical probing is presented that permits multiple, time-resolved 2D measurements to be made during a single, ultra-intense (> 10 super(18)W cm super(-2)) laserplasma interaction. The diagnostic is capable of resolving rapid changes in target reflectivity which can be used to infer valuable information on fast electron transport and plasma formation at the target rear surface. Initial results from the Astra-Gemini laser are presented, with rapid radial sheath expansion together with detailed filamentary features being observed to evolve during single shots.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/9/03/P03003