Monte Carlo based calibration of an air monitoring system for gamma and beta plus radiation

被引:2
作者
Sarnelli, A. [1 ]
Negrini, M. [2 ]
D'Errico, V. [1 ]
Bianchini, D. [1 ]
Strigari, L. [3 ]
Mezzenga, E. [1 ]
Menghi, E. [1 ]
Marcocci, F. [1 ]
Benassi, M. [1 ]
机构
[1] IRCCS Ist Sci Romagnolo Studio & Cura Tumori, Dept Med Phys, I-47014 Meldola, Italy
[2] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[3] Natl Canc Inst Regina Elena, Lab Med Phys & Expert Syst, I-00144 Rome, Italy
关键词
GEANT4; simulation; Air monitoring system; Marinelli beaker; Correction for both gamma and beta plus emitters; SIMULATION; DETECTOR; SPECTROMETRY; SAMPLES; GEANT4; CODE;
D O I
10.1016/j.apradiso.2015.08.040
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Marinelli beaker systems are used to monitor the activity of radioactive samples. These systems are usually calibrated with water solutions and the determination of the activity in gases requires correction coefficients accounting for the different mass-thickness of the sample. For beta+ radionuclides the different distribution of the positrons annihilation points should be also considered. In this work a Monte Carlo simulation based on Geant4 is used to compute correction coefficients for the measurement of the activity of air samples. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:273 / 277
页数:5
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