Development of Simulated HPGe Detector Spectrum for Education

교육용 모사 HPGe 검출기 스펙트럼 개발

  • Seo, Kyung-Won (Nuclear Training Center, Korea Atomic Energy Research Institute) ;
  • Lee, Mo-Sung (Department of Applied Science, Chongju University)
  • 서경원 (한국원자력연구소 원자력연수원) ;
  • 이모성 (청주대학교 응용과학부)
  • Published : 2007.03.30


From HPGe calibration spectrum of liquid mixed source in cylindrical vial, we developed simulated spectrum for spectrum analysis education. It is the spectrum that combine peaks separated from measured spectrum. After that, spectrum removed statistical variation of channel counts. Statistical fluctuation of the spectrum is made by Box-Muller function. The spectrum contains 18 peaks. The peak's centroid and area were defined exactly. Developed spectra are calibration spectrum, sample spectrum, background spectrum and spectra for efficiency correction for geometry and cascade coincidence.

원통형 용기에 담긴 액체 혼합선원의 HPGe 검출기 교정용 스펙트럼으로부터 스펙트럼 분석 교육을 위한 모사 스펙트럼을 개발하였다. 모사 스펙트럼은 측정된 스펙트럼으로부터 피크를 분리한 후, 채널별 계수들의 변동이 제거된 스펙트럼을 결합한 것이다. 모사 스펙트럼의 통계적 변동은 Box-Muller 함수로 만들었다. 이 스펙트럼은 18개의 피크를 포함하고 있다. 각 피크의 중심 위치 및 면적 등은 정확하게 정의되었다. 개발된 스펙트럼은 교정용 스펙트럼, 시료 스펙트럼, 백그라운드 스펙트럼 그리고 기하학적 및 동시합성 보정을 위한 스펙트럼이다.


  1. IAEA. Measurement of radionuclides in food and the environment. TR No.295 1989
  2. Canberra. Genie 2000 Operational Manual. 2002:125
  3. Canberra. Multifit Fitting Parameters Setup. APTEC.HLP, 2002
  4. Parr RM, Houtermans H, Schaerf J. The I.A.E.A. intercomparison of methods of processing Ge(Li) gammaray spectra - preliminary report, in 'Computers in Activation Analysis and Gamma Ray Spectrometry. I.A.E.A. CONF- 780421 1979
  5. Sanderson CG. An evaluation of commercial IBM PC software for the analysis of low level environmental gamma-ray spectra. Environment International 14 1988:379-384
  6., Nuclear Training Services Ltd
  7. Kern J. Computer analysis of nuclear spectra and ${\gamma}-energy$ standards. Nucl. Instr. and Meth. 1970;79:233-239
  8. Jorch HH and Campbell JL. On the analytic fitting of full energy peaks from Ge(Li) and Si(Li) photon detectors. Nucl. Instr. and Meth. 1977;143:551-559
  9. Teoh W. Cutipie - A computer program to analyze gamma-ray spectra. Nucl. Instr. and Meth. 1973;109:509-513
  10. Dojo M. A shape function of photopeaks for gamma-ray spectrum analysis with Ge(Li) detectors. Nucl. Instr. and Meth. 1974;115:425-429
  11. Canberra. Genie 2000 Operational Manual. 2002:116-117
  12. Knuth DE. The Art of Computer Programming. Addision Wesley 1981:117-127
  13. Gilmore G and Hemingway JD. Practical Gamma-Ray Spectrometry. John Wiley & Sons 1955:167