Observations of Improvement in Conversion Efficiency to Laser Accelerated Protons Using Er-Hydride Coated Targets

Details Observations of Improvement in Conversion Efficiency to Laser Accelerated Protons Using Er-Hydride Coated Targets Observations of Improvement in Conversion Efficiency to Laser Accelerated Protons Using Er-Hydride Coated Targets

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..apr8he068o&link_type=abstract

American Physical Society, 2008 APS April Meeting and HEDP/HEDLA Meeting, April 11-15, 2008, abstract #8HE.068

Physics

Scientific paper

Using the Callisto Laser, at LLNL (8J, 3x10^19W/cm^2 ) we have compared proton beams originating from contaminant layers on Gold foil targets with beams from Gold targets coated with ErH3. Contaminants were removed using an Ar-Ion etching beam. Data was collected using radiochromic film and a Thomson spectrometer. An improvement of 23% in conversion efficiency for protons above 3MeV was observed due to ErH3. LSP simulations agree with this result when assumed that carbon ions in contaminants are predominantly He-like, as seen on the Thomson spectrometer.

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