Proton radiography of laser-driven imploding target in cylindrical geometry
Year: 2011
Authors: Volpe L., Batani D., Vauzour B., Nicolai P., Santos J.J., Regan C., Morace A., Dorchies F., Fourment C., Hulin S., Perez F., Baton S., Lancaster K., Galimberti M., Heathcote R., Tolley M., Spindloe C., Koester P., Labate L., Gizzi L.A., Benedetti C., Sgattoni A., Richetta M., Pasley J., Beg F., Chawla S., Higginson D.P., MacPhee A.G.
Autors Affiliation: Univ Milano Bicocca, I-20126 Milan, Italy; INO CNR, I-56124 Pisa, Italy; Univ Bordeaux, CELIA, CNRS, CEA, F-33405 Talence, France; Univ Milan, Dipartimento Fis, I-20133 Milan, Italy; UPMC, LULI, Ecole Polytech, CNRS, F-91128 Palaiseau, France; STFC, RAL, Didcot OX11 0QX, Oxon, England; Univ Bologna, I-40126 Bologna, Italy; Univ Roma Tor Vergata, I-00133 Rome, Italy; Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England; Univ Calif San Diego, La Jolla, CA 92093 USA; LLNL, Livermore, CA 94550 USA.
Abstract: An experiment was done at the Rutherford Appleton Laboratory (Vulcan laser petawatt laser) to study fast electron propagation in cylindrically compressed targets, a subject of interest for fast ignition. This was performed in the framework of the experimental road map of HiPER (the European high power laser energy research facility project). In the experiment, protons accelerated by a picosecond-laser pulse were used to radiograph a 220 mu m diameter cylinder (20 mu m wall, filled with low density foam), imploded with similar to 200 J of green laser light in four symmetrically incident beams of pulse length 1 ns. Point projection proton backlighting was used to get the compression history and the stagnation time. Results are also compared to those from hard x-ray radiography. Detailed comparison with two-dimensional numerical hydrosimulations has been done using a Monte Carlo code adapted to describe multiple scattering and plasma effects. Finally we develop a simple analytical model to estimate the performance of proton radiography for given implosion conditions. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3530596]
Journal/Review: PHYSICS OF PLASMAS
Volume: 18 (1) Pages from: 12704-1 to: 12704-13
More Information: The authors acknowledge the support of the HiPER project and Preparatory Phase Funding Agencies (EC, MSMT, and STFC) in undertaking this work.KeyWords: MatterDOI: 10.1063/1.3530596ImpactFactor: 2.147Citations: 30data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-09-15References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here
