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

fYear

2009

fDate

June 28 2009-July 2 2009

Firstpage

28

Lastpage

33

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/PPC.2009.5386207

Filename

5386207