Automated computer analysis of x-ray radiographs greatly facilitates measurement of coating-thickness variations in laser-fusion targets
An automated system was built to analyze x-ray radiographs of laser fusion targets which greatly facilitates the detection of coating thickness variations. Many laser fusion targets reqire opaque coatings 1 to 20 ..mu..m thick which have been deposited on small glass balloons 100 to 500 ..mu..m in diameter. These coatings must be uniformly thick to 1% for the targets to perform optimally. Our system is designed to detect variations as small as 100 A in 1-..mu..m-thick coatings by converting the optical density variations of contact x-ray radiographs into coating thickness variations. Radiographic images are recorded in HRP emulsions and magnified by an optical microscope, imaged onto television camera, digitized and processed on a Data General S/230 computer with a code by Whitman. After an initial set-up by the operator, as many as 200 targets will be automatically characterized.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5952471
- Report Number(s):
- LA-UR-81-3027; CONF-811113-26; ON: DE82002353; TRN: 82-000321
- Resource Relation:
- Journal Volume: 20; Journal Issue: 4; Conference: American Vacuum Society national symposium, Anaheim, CA, USA, 3 Nov 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
Radiographic detection of 100 A thickness variations in 1-. mu. m-thick coatings applied to submillimeter-diameter laser fusion targets
Analysis of laser fusion targets using monochromatic x-ray microradiographs