Grid-Focused Diodes for Radiography

Simulations with the TRAK ray-tracing code have shown that grid-focused diodes might be a simple alternative to gas/plasma cell focusing for moderate-energy radiography machines. Multi-grid focusing has advantages over single grid focusing, especially in circumventing neutralization from gases evolv...

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Bibliographic Details
Main Authors: Ekdahl, Carl, Humphries, Jr, Stanley
Format: Report
Language:English
Subjects:
COMPUTERIZED SIMULATION
DIODES
Electricity and Magnetism
ELECTRON BEAMS
GAS PRESSURE
GRID FOCUSING
Particle Accelerators
PLASMA DENSITY
Plasma Physics and Magnetohydrodynamics
RADIOGRAPHY
RAY TRACING
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Summary:Simulations with the TRAK ray-tracing code have shown that grid-focused diodes might be a simple alternative to gas/plasma cell focusing for moderate-energy radiography machines. Multi-grid focusing has advantages over single grid focusing, especially in circumventing neutralization from gases evolved from the heated target. The practical technology for grid focusing was established many years ago in an extensive series of experiments. Prepared in cooperation with Field Precision, Albuquerque, NM. Presented at 2005 IEEE Pulsed Power Conference in Monterey CA on 13-17 Jun 2005 and published in proceedings of the same, p868-871; 0-7803-9189-6/05. See also ADM002371, 2013 IEEE Pulsed Power Conference, Digest of Technical Papers 1976-2013, and Abstracts of the 2013 IEEE International Conference on Plasma Science. The original document contains color images.