Carborne gamma-ray spectrometry. Calibration and applications.
Calibration of carborne gamma-ray spectrometry systems for (137)Cs is carried out with a source successively placed at 791 positions within an area of 34 m x 62 m. A computer model supplements the measurements. Hereby a sensitivity map for a surface contamination is generated as well as line and area sensitivities. Another model converts surface sensitivity to sensitivity for a deep contamination. Use of the sensitivity map for a non-homogeneous distribution of (137)Cs is demonstrated. Applications of line sensitivities for special tasks are discussed.
Aage
H K
HK
Oersted DTU, Measurement & Instrumentation Systems, Elektrovej, Building 327, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark. hka@oersted.dtu.dk
Korsbech
U
U
Bargholz
K
K
Hovgaard
J
J
D001336:Automobiles; D002138:Calibration; D004866:Equipment Contamination / Q000517:prevention & control*; D005720:Gamma Rays; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D015203:Reproducibility of Results; D012637:Security Measures; D012680:Sensitivity and Specificity; D013051:Spectrometry, Gamma / Q000295:instrumentation* / Q000379:methods