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Feasibility study of CdMnTeSe based diagnostic X-ray detector

  • Ayun Jeong (Department of Radiological Science, College of Health Sciences, Catholic University of Pusan) ;
  • Jiwon Seo (Department of Health and Safety Science, Korea University) ;
  • Gi-Hyeok Shin (Department of Radiology, Dong-A University Medical Center) ;
  • Jangwon Byun (Department of Materials Science and Engineering, Korea University) ;
  • Taejoon Mo (Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Ahreum Park (Department of Chemistry, Konkuk University) ;
  • Jeongmin Seo (Department of Radiological Science, College of Health Sciences, Catholic University of Pusan) ;
  • Jeongho Kim (Department of Radiation Oncology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine) ;
  • Beomjun Park (Interdisciplinary Program in Precision Public Health, Korea University)
  • 투고 : 2024.04.28
  • 심사 : 2024.06.22
  • 발행 : 2024.11.25

초록

Despite their initial commercialization, CdTe-based materials are continuously being developed. However, an approach for obtaining the X-ray response with a current-mode CdMnTeSe (CMTS) detector remains to be explored. This study investigated the feasibility of using CMTS as a potential material in diagnostic X-ray detectors. The CMTS crystals were grown using the Bridgman method and treated with a radiation detector. The X-ray response of the CMTS detector was evaluated under various conditions, including tube voltage, tube current, and bias voltage. In addition, the mass attenuation coefficients of CdTe-based materials, including CMTS, were investigated. Our results demonstrated that CMTS exhibited promising properties for diagnostic X-ray detection, with stable and linear responses across various tube voltages and currents. In addition, the calculated sensitivity of the CMTS detector increased at higher bias voltages, demonstrating its practical applicability. However, problems such as signal loss were observed at higher dose rates, suggesting the need for further optimization of the CMTS growth techniques. Overall, this study indicated the requirement for further improvement in the CMTS crystal properties; however, the potential of CMTS as a candidate material for the next generation of diagnostic X-ray detectors was evident.

키워드

과제정보

This work was supported by the Korea Institute of Energy Technology and Planning(KETEP) grant funded by the Korean government (MOTIE) (20214000000070, Promoting of Experts for Energy Industry Advancement in the Field of Radiation Technology) and (20222B10100060, Development of On-site Burn-up Detection System for the Spent Fuel). This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MIST) (No. 2022R1F1A1059554).

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