Measuring x-ray spectra of flash radiographic sources

Amanda E. Gehring; Michelle A. Espy; Todd J. Haines; Jacob Mendez; David C. Moir; Robert Sedillo; Roger P. Shurter; Petr Volegov; Timothy J. Webb

doi:10.1117/12.2188829

27 August 2015 Measuring x-ray spectra of flash radiographic sources

Amanda E. Gehring, Michelle A. Espy, Todd J. Haines, Jacob Mendez, David C. Moir, Robert Sedillo, Roger P. Shurter, Petr Volegov, Timothy J. Webb

Author Affiliations +

Proceedings Volume 9595, Radiation Detectors: Systems and Applications XVI; 959506 (2015) https://doi.org/10.1117/12.2188829
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

A Compton spectrometer has been re-commissioned for measurements of flash radiographic sources. The determination of the energy spectrum of these sources is difficult due to the high count rates and short nature of the pulses (~50 ns). The spectrometer is a 300 kg neodymium-iron magnet which measures spectra in the <1 MeV to 20 MeV energy range. Incoming x-rays are collimated into a narrow beam incident on a converter foil. The ejected Compton electrons are collimated so that the forward-directed electrons enter the magnetic field region of the spectrometer. The position of the electrons at the magnet’s focal plane is a function of their momentum, allowing the x-ray spectrum to be reconstructed. Recent measurements of flash sources are presented.

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Amanda E. Gehring, Michelle A. Espy, Todd J. Haines, Jacob Mendez, David C. Moir, Robert Sedillo, Roger P. Shurter, Petr Volegov, and Timothy J. Webb "Measuring x-ray spectra of flash radiographic sources", Proc. SPIE 9595, Radiation Detectors: Systems and Applications XVI, 959506 (27 August 2015); https://doi.org/10.1117/12.2188829

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