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Unveiling the direct conversion X-ray sensing potential of Brucinium benzilate and N-acetylglcyine
Prakash T.,Karnan C.,Kanagathara N.,Karthieka R.R.,Ajith Kumar B.S.,Prabhaharan M. 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.6
The study investigates the dose-dependent direct X-ray sensing characteristics of Brucinium benzilate (BB) and Nacetylglycine (NAG) organic crystals. BB and NAG were prepared as a slurry and deposited as a thick film on a patterned metal electrode. The X-ray induced photocurrent response was examined for various exposure doses using an intraoral pulsed 70 keV X-ray machine connected to a source meter. Subsequently, the morphological properties and thickness of the thick films were analyzed using scanning electron microscopy (SEM). At a photon energy of 70 keV, the attenuation coefficient values for NAG and BB crystals were determined to be approximately 0.181 and 0.178 cm2/g, respectively. The X-ray stopping power of the crystals was measured using a suniray-2 X-ray imaging system. To evaluate the responsiveness of the sensors, the photocurrent sensitivity and noise equivalent dose rate (NED) were calculated for both thick films. The findings demonstrated a noteworthy capability of sensing low doses (mGy), thereby suggesting the potential application of these organic materials in X-ray sensor development.