Earticle

초록

영어

Background: A hand-held detector for an emergency response was developed for nuclide identification and to estimate the information of the ambient dose rate in the scene of an accident as well as the radioactivity of the contaminants. Materials and Methods: To achieve this, the most suitable sensor was first selected as a cadmium zinc telluride (CZT) semiconductor and the signal processing unit from a sensor and the signal discrimination and storage unit were successfully manufactured on a printed circuit board. Results and Discussion: The performance of the developed signal processing unit was then evaluated to have an energy resolution of about 14 keV at 662 keV. The system control unit was also designed to operate the CZT detector, monitor the detector, battery, and interface status, and check and transmit the measured results of the ambient dose rate and radioactivity. In addition, a collimator, which can control the inner radius, and the airborne dust sampler, which consists of an air filter and charcoal filter, were developed and mounted to the developed CZT detector for the quick and efficient response of a nuclear accident. Conclusion: The hand-held CZT detector was developed to make the in-situ gamma-ray spectrometry and its performance was checked to have a good energy resolution. In addition, the collimator and the airborne dust sampler were developed and mounted to the developed CZT detector for a quick and efficient response to a nuclear accident.

목차

ABSTRACT
 1. INTRODUCTION2
 2. MATERIALS AND METHODS
  2.1 CZT semiconductor
  2.2 CZT sensor and preamplifier
  2.3 Modification of a preamplifier
 3. RESULTS AND DISCUSSION
  3.1 Signal processing unit
  3.2 Signal discrimination and storage
 4. SYSTEM CONTROL UNIT
 5. COLLIMATOR AND AIRBORNE DUST SAMPLER
 6. CONCLUSION
 ACKNOWLEDGEMENT
 REFERENCES

키워드

저자

• Young-Yong Ji [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ] Corresponding author
• Kun Ho Chung [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ]
• Chang-Jong Kim [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ]
• Jin Yoon [ SI Detection Co. Ltd, Daejeon, Republic of Korea ]
• Wanno Lee [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ]
• Geun-Sik Choi [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ]
• Mun Ja Kang [ Korea Atomic Energy Research Institute, Daejeon, Republic of Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629