Development of backlighting sources for a Compton Radiography diagnostic of Inertial Confinement Fusion targets

Tommasini, R

关键词: COMPTON EFFECT;    HOT SPOTS;    IMAGES;    IMPLOSIONS;    INERTIAL CONFINEMENT;    LASERS;    OPACITY;    PHOTONS;    PLASTICS;    RESOLUTION;    SPATIAL RESOLUTION;    US NATIONAL IGNITION FACILITY;    X-RAY RADIOGRAPHY;   

DOI  :  10.2172/992290
RP-ID  :  LLNL-TR-429373
PID  :  OSTI ID: 992290
Others  :  TRN: US1007777

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

An important diagnostic tool for inertial confinement fusion is time-resolved imaging of the dense cold fuel surrounding the hot spot. Here we report on the source and diagnostic development of hard x-ray radiography and on the first radiographs of direct drive implosions obtained at photon energies up to about 100keV, where the Compton effect is the dominant contributor to the shell opacity. The radiographs of direct drive, plastic shell implosions obtained at the OMEGA laser facility have a spatial resolution of {approx}10um and a temporal resolution of {approx}10ps. This novel Compton Radiography is an invaluable diagnostic tool for Inertial Confinement Fusion targets, and will be integrated at the National Ignition Facility (NIF).