1. Effect of reentrant cone geometry on energy transport in intense laser-plasma interactions.
- Author
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Lancaster KL, Sherlock M, Green JS, Gregory CD, Hakel P, Akli KU, Beg FN, Chen SN, Freeman RR, Habara H, Heathcote R, Hey DS, Highbarger K, Key MH, Kodama R, Krushelnick K, Nakamura H, Nakatsutsumi M, Pasley J, Stephens RB, Storm M, Tampo M, Theobald W, Van Woerkom L, Weber RL, Wei MS, Woolsey NC, Yabuuchi T, and Norreys PA
- Subjects
- Computer Simulation, Energy Transfer radiation effects, Gases chemistry, Gases radiation effects, Hot Temperature, Lasers, Models, Chemical
- Abstract
The energy transport in cone-guided low- Z targets has been studied for laser intensities on target of 2.5x10(20) W cm(-2). Extreme ultraviolet (XUV) imaging and transverse optical shadowgraphy of the rear surfaces of slab and cone-slab targets show that the cone geometry strongly influences the observed transport patterns. The XUV intensity showed an average spot size of 65+/-10 microm for slab targets. The cone slabs showed a reduced spot size of 44+/-10 microm. The shadowgraphy for the aforementioned shots demonstrate the same behavior. The transverse size of the expansion pattern was 357+/-32 microm for the slabs and reduced to 210+/-30 microm. A transport model was constructed which showed that the change in transport pattern is due to suppression of refluxing electrons in the material surrounding the cone.
- Published
- 2009
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