Development of Compton radiography using high-Z backlighters produced by ultra-intense lasers

Journal Article · Thu Aug 02 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2768857· OSTI ID:21067344

Tommasini, Riccardo; Park, Hye-Sook; Patel, Prav; Maddox, Brian; Le Pape, Sebastien; Hatchett, Stephen P; Remington, Bruce A; Key, Michael H; Izumi, Nobuhiko; Tabak, Max; Koch, Jeffrey A; Landen, Otto L; Hey, Dan; MacKinnon, Andy; Seely, John; Holland, Glenn; Hudson, Larry; Szabo, Csilla ^[1]

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1. Lawrence Livermore National Laboratory, Livermore CA (United States)

High-energy x-ray backlighters will be valuable for radiography experiments at the National Ignition Facility (NIF), and for radiography of imploded inertial confinement fusion cores using Compton scattering to observe cold, dense plasma. Key considerations are the available backlight brightness, and the backlight size. To quantify these parameters we have characterized the emission from low- and high-Z planar foils irradiated by intense picosecond and femtosecond laser pulses from the TITAN laser facility at Lawrence Livermore National Laboratory. Spectra generated by a sequence of elements from Mo to Pb, spanning the x-ray energy range from 17 keV to 75 keV, have been recorded using a Charged Coupled Device (CCD) in single hit regime and a Dual Crystal Spectrometer (DCS). High-resolution point-projection 2D radiographs have also been recorded on Fuji BaFBr:Eu2 image plates using calibrated resolution grids. We discuss the results in light of the requirements for applications at NIF.

• OSTI ID: 21067344
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 926; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGE-COUPLED DEVICES
COMPTON EFFECT
INERTIAL CONFINEMENT
IRRADIATION
KEV RANGE
LASERS
LAWRENCE LIVERMORE NATIONAL LABORATORY
PLASMA
PLASMA DIAGNOSTICS
PULSES
US NATIONAL IGNITION FACILITY
X RADIATION
X-RAY SPECTROSCOPY