Absolute X-Ray Yields From Laser-Irradiated, Ge-Doped Aerogel Targets

Conference · Wed Jun 15 00:00:00 EDT 2005

OSTI ID:877865

Fournier, K B; Tobin, M; Poco, J F; Bradley, K; Coverdale, C A; Beutler, D; Vidnovic, T; Severson, M; Smith, E A; Reeder, D L

Bright, multi-keV x-ray sources are essential for radiography of inertial-confinement fusion (ICF) experiments. In this context, there are two parameters of importance: the energy of the emitted photons, which determines how penetrating the x-rays are for radiographic purposes, and the brightness of the source, which determines the ability of a radiograph to resolve small features. As ICF experiments continue to get larger, such as those that will be carried out at the National Ignition Facility at Lawrence Livermore National Laboratory, or at the French Commissariat a l'Energie Atomique's (CEA) Laser MegaJoule, and compression in fuel capsules gets higher, sources for x-ray backlighting will have to have harder-photon spectra. For a given laser energy available to drive the multi-keV x-ray-backlight source, the only way for the source to get brighter is for it to convert the laser to x-rays more efficiently. We have been developing and characterizing laser-driven, underdense x-ray sources that are highly efficient in recent years [2-5]. CEA researchers have also recently had great success efficiently making multi-keV x-rays from pre-pulsed foils [6].

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 877865
• Report Number(s): UCRL-CONF-213086; TRN: US0601650
• Resource Relation: Conference: Presented at: 32nd EPS Plasma Physics Conference, Tarragona, Spain, Jun 27 - Jul 01, 2005
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BRIGHTNESS
COMPRESSION
IMAGES
INERTIAL CONFINEMENT
LASERS
LAWRENCE LIVERMORE NATIONAL LABORATORY
PHOTONS
PHYSICS
PLASMA
SPECTRA
TARGETS
US NATIONAL IGNITION FACILITY
X-RAY SOURCES