Flash x-ray sources powered by Blumlein pulsers: review and prospect for x rays with 100-ps switching

Farzin Davanloo; Carl B. Collins Jr.; Forrest Jack Agee

doi:10.1117/12.451706

26 November 2002 Flash x-ray sources powered by Blumlein pulsers: review and prospect for x rays with 100-ps switching

Farzin Davanloo, Carl B. Collins Jr., Forrest Jack Agee

Proceedings Volume 4786, Penetrating Radiation Systems and Applications IV; (2002) https://doi.org/10.1117/12.451706
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The flash x-ray systems developed at the University of Texas at Dallas (UTD) center around two critical subassemblies: (1) a Blumlein pulsed power source, and (2) an x-ray diode properly designed and matched to the pulse forming line. The pulse generator consists of either a single or several traxial Blumleins. For multiple lines, Blumleins are stacked in series at one end and charged in parallel and synchronously commutated with a single switching element at the other end. Extensive characterizations of these Blumlein pulsers have been performed over the past several years. Results indicate that they are capable of producing high power waveforms with risetimes and repetition rates in the range of 0.1-50 ns and 1-300 Hz, respectively, using a conventional thyratron, spark gap, or photoconductive switch. Blumlein pulsers switched by a thyratron or a spark gap have been used to drive x-ray diode loads with different characteristics and discharge geometries and high dose rates of x-rays with pulse durations in the range 3-20 ns have been obtained. In this report the technology and characteristics of these Blumlein based flash x-ray devices are reviewed. Prospects for producing ultra-fast x-ray pulses utilizing photoconductively-switched Blumlein devices are discussed.

Citation Download Citation

Farzin Davanloo, Carl B. Collins Jr., and Forrest Jack Agee "Flash x-ray sources powered by Blumlein pulsers: review and prospect for x rays with 100-ps switching", Proc. SPIE 4786, Penetrating Radiation Systems and Applications IV, (26 November 2002); https://doi.org/10.1117/12.451706

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