MODULATED X-RAY HARMONIC DETECTION

摘要

The presently disclosed technique provides a method and apparatus for use in modulated X-ray harmonic detection and identification. More specifically, it specifies a X-ray backscatter imaging system using radio frequency modulation of the incident X-ray beam at two frequencies and detection patterns in the backscattered signal corresponding to harmonics of the modulation frequencies.

主权项

1. A method, comprising:
concurrently modulating an X-ray signal with a first radio frequency signal and with a second radio frequency signal to generate a modulated X-ray signal; transmitting the modulated X-ray signal into a field of view containing a sample; receiving backscatter of the modulated X-ray signal reflected from the sample; and processing the backscatter to identify the sample from a pattern of detected harmonics of the first radio frequency signal and the second radio frequency signal.