Generation and focusing of high energy, 35-kA electron beams for pulsed-diode radiographic machines: Theory and experiment
- Los Alamos National Lab., NM (United States)
- Mission Research Corp., Albuquerque, NM (United States)
Cathode ball and anode planar-foil geometries used to generate self-focused beams onto x-ray conversion targets via beam-induced ionization in gas cells have been investigated since the early 1970`s by J. C. Martin et al at Aldermaston, U.K. The building of a succession of increasingly higher voltage, pulsed-diode machines tailored for flash x radiography has resulted. Given sufficient dose to penetrate an object, the spot size of the x-ray source generally determines the resolution of a radiograph. Reported are particle-in-cell code simulations applied to beam generation in the A-K gap and the self-focusing onto the target. A Monte Carlo code for neutron, photon, and electron transport converts the beam particles at the target to photons with transport to a film plane used to calculate the spot size. Comparisons are made to experiments using the Ector (3.5--4 MeV) and PIXY (4--8 MeV) pulsed-diode radiographic machines at Los Alamos.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10160159
- Report Number(s):
- LA-UR--93-1744; CONF-930511--86; ON: DE93014573
- Country of Publication:
- United States
- Language:
- English
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