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Persistent URL http://purl.org/net/epubs/work/10867607
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Record Id 10867607
Title Fast electron transport patterns in intense laser-irradiated solids diagnosed by modeling measured multi-MeV proton beams
Abstract The measured spatial-intensity distribution of the beam of protons accelerated from the rear side of a solid target irradiated by an intense (>1019 Wcm−2) laser pulse provides a diagnostic of the two-dimensional fast electron density profile at the target rear surface and thus the fast electron beam transport pattern within the target. An analytical model is developed, accounting for rear-surface fast electron sheath dynamics, ionization and projection of the resulting beam of protons. The sensitivity of the spatial-intensity distribution of the proton beam to the fast electron density distribution is investigated. An annular fast electron beam transport pattern with filamentary structure is inferred for the case of a thick diamond target irradiated at a peak laser intensity of 6 × 1019 Wcm−2.
Organisation CLF , CI , STFC
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Language English (EN)
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Journal Article Laser Part Beams 31, no. 03 (2013): 475-480. doi:10.1017/S0263034613000529 2013