Target surface area effects on hot electron dynamics from high intensity laser-plasma interactions

Zulick, C. and Raymond, A. and McKelvey, A. and Chvykov, V. and Maksimchuk, A. and Thomas, A. G. R. and Willingale, L. and Yanovsky, V. and Krushelnick, K. (2016) Target surface area effects on hot electron dynamics from high intensity laser-plasma interactions. New Journal of Physics, 18. ISSN 1367-2630

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Abstract

Reduced surface area targets were studied using an ultra-high intensity femtosecond laser in order to determine the effect of electron sheath field confinement on electron dynamics. X-ray emission due to energetic electrons was imaged using a Ka imaging crystal. Electrons were observed to travel along the surface of wire targets, and were slowed mainly by the induced fields. Targets with reduced surface areas were correlated with increased hot electron densities and proton energies. Hybrid Vlasov-Fokker-Planck simulations demonstrated increased electric sheath field strength in reduced surface area targets.

Item Type:
Journal Article
Journal or Publication Title:
New Journal of Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
81938
Deposited By:
Deposited On:
07 Oct 2016 09:24
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 09:58