Detection of x rays by a surface acoustic delay line in contact with a diamond crystal

Abstract

In this study, we present proof of concept for an x-ray detector. The hybrid device consists of a synthetic single crystal diamond in mechanical contact with a piezoelectric lithium niobate surface acoustic wave (SAW) delay line. Upon x-ray irradiation, the diamond crystal experiences a change in conductivity, which, in turn, very sensitively influences the SAW transmission on the delay line. This change in SAW attenuation is directly used to monitor the x-ray beam intensity. The SAW attenuation shows a monotonic variation with dose rate D in the studied range between 100 and 1800 lGy/s. While the response time leaves room for further improvement, the SAW detection principle offers the unique possibility for wireless remote powering and sensing.

Influence of the Core Pillar Height on the Bandgap Characteristics of Piezoelectric Phononic Crystals with Ring-Shaped Grooves

“…Using light and acoustic waves [1] is the most practical way to reach this aim. Surface acoustic waves (SAWs) have been receiving extensive attention on various research and application areas related to delay lines [2], filters [3,4], microfluidics [5][6][7], gas-detection [8,9], mass detection [10] and biodetection applications [11,12]. Due to these wide ranges of research and application areas, SAW devices have drawn significant interest in recent decades.…”