Radiation Field Results from the Speed Triax Diode, a Large Area, High Dose Rate, Short Pulse 1 MV Bremsstrahlung Source

Hedemann, M. A.; Pregenzer, Arian L.; Posey, Larry D.; Evans, D. C.; Spence, P.

doi:10.1109/tns.1985.4334106

Cited by 6 publications

(2 citation statements)

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“…Vacuum diodes with the mean impedance 0.35-0.50 Ω capable of irradiating large areas (> 100 cm 2 ) can be built around ring diodes with symmetric current spreading in the inner and outer return conductors [7,8,10]. When a one-or multiple-ring electron beam is accelerated in the vacuum diode and stabilized by the self-magnetic fields of currents spreading in inner and outer return conductors interacts with the anode (Та, 10 to 50 μm thick), the energy of accelerated electrons is converted to X-ray energy.…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…One of the directions of research concerned with these generators is generation of relativistic electron beams and development of hard X-ray sources [7][8][9], in particular, in range 10-100 keV. In the case when the areas to be irradiated are small (5-50 cm 2 ), use is made of high-current pinched diodes, in other cases, large-area diodes with several cathodes are most suitable.…”

Section: Introductionmentioning

confidence: 99%

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X-ray source for irradiation of large-area objects

et al. 2008

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-The results of experiments with a threering large-area diode performed on an MIG pulse generator are reported. The MIG generator allows electrical pulses up to 2 TW at FWHM 50-60 ns (1.2-1.4 TW and 80-90 ns in our experiments) to be produced at a matched load. In the operating mode of the generator, the current amplitude through the load is up to 2 MA (the current of a relativistic electron beam) at a diode voltage of ~ 500 kV. A large-area vacuum diode with three ring-shaped cathodes is used as a load. When the beam slows down on a condensed foil target, the parameters of the resulting source are the following: the mean energy of X-ray quanta is ~ 70 keV, irradiated area -500 cm 2 , FWHM -65 ns, and Xray radiation (10-100 keV) in the flux ~ 50%. It is shown that absorption of radiation by the target is significant at large angles to the diode axis.

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Section: Statement Of the Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%