Title :
X-ray absorption and scattering issues for rod-pinch radiographic sources
Author :
Mosher, David ; Hinshelwood, David D. ; Cooperstein, Gerald ; Huhman, Brett ; Allen, Raymond J. ; Lutz, Stephen S. ; Berninger, Michael J. ; Oliver, Bryan V. ; Portillo, Salvador ; Haines, Todd
Author_Institution :
Plasma Phys. Div., Naval Res. Lab., Washington, DC, USA
fDate :
June 28 2009-July 2 2009
Abstract :
During the past decade, the rod-pinch diode has been used extensively for high-brightness, megavolt X-ray radiography. Success of the rod pinch derives from its small radiographic spot size for a range of driving voltages and X-ray spectra. Here, we examine two experimentally observed and more subtle phenomena that may impact radiographic performance for some systems: flat-field nonuniformity in the image plane due to X-ray absorption in the rod, and weak, large-scale structures around radiographic features due to cathode-scattered X-rays. X-ray imaging data from Cygnus and HRS are analyzed by the ITS Monte Carlo codes to determine if these phenomena are significant for Cygnus.
Keywords :
X-ray absorption; X-ray imaging; X-ray scattering; pinch effect; plasma diodes; radiography; Cygnus; ITS Monte Carlo codes; X-ray absorption; X-ray imaging data; X-ray scattering; X-ray spectra; cathode-scattered X-rays; high-brightness; image plane; megavolt X-ray radiography; radiographic spot size; rod-pinch diode; rod-pinch radiographic sources; Anodes; Cathodes; Electromagnetic wave absorption; Electron beams; Laboratories; National security; Physics; Radiography; X-ray imaging; X-ray scattering;
Conference_Titel :
Pulsed Power Conference, 2009. PPC '09. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-4064-1
Electronic_ISBN :
978-1-4244-4065-8
DOI :
10.1109/PPC.2009.5386207
