Calculations of Radiation Measurement-Related Correction Factors

방사선 측정관련 보정인자 계산

  • Published : 2003.03.30

Abstract

The self-attenuation factor for an $^{198}Au$ sample and the 0.412 MeV gamma-ray penetration ratio in the circular Al-cover of the radiation detector have been determined using an analytical solution and MCNP code. The results show that the self-attenuation factors obtained from the analytical solution coincide with those of MCNP code for all but the Au sample with the relatively larger radius. Then the maximum difference between the two methods appears to be 9 % in the Au sample of 1.5 mm radius. It also is revealed that the analytical solutions of the 0.412 MeV gamma-ray penetration ratio in the Al-cover of 7.62 cm radius are consistent with those of the MCNP code within the standard deviation.

해석적인 방법과 MCNP 로드를 사용하여 $^{198}Au$ 선원시료에 대한 자체감쇠인자와 검출기의 원반형 Al 덮개에 대한 0.412 MeV 감마선의 투과율을 구하였다. 그 결과, 비교적 반경이 큰 Au 시료를 제외하고 모든 경우에서 해석적인 해가 MCNP 코드의 결과와 잘 일치하는 것으로 나타났다. 이때 두 방법의 최대 편차는 약 9 %로서 Au 시료의 반경이 1.5 mm인 경우에 나타났다. 검출기 Al 덮개의 직경이 7.62 cm인 경우에 대한 0.412 MeV 감마선의 투과율에 대한 해석적인 해는 HCNP 코드의 결과와 표준편차의 범위내에서 잘 일치하는 것으로 나타났다.

Keywords

References

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