A method for calculation of radiation quantities at all points in gamma radiation calibration fields.
Radiation quantity values at all points of a known distance range of gamma radiation calibration fields were calculated using a mathematical method. The method is based on interpolation using Chi-square test on a set of experimental data at optional points of both collimated and un-collimated calibration set-ups by means of a reference instrument. In comparison with Monte Carlo calculations, the values that were calculated by this method differ by <1% for collimated and 2% for un-collimated calibration set-ups. Consequently, the radiation quantities at all points of gamma radiation calibration field set-ups can accurately be formulated and determined by this method. In addition, all points in the radiation fields can be regarded as test points.
Hosseini-Pooya
S M
SM
National Radiation Protection Department, Iranian Nuclear Regulatory Authority, PO Box 14155-4494, Tehran, Iran. mhosseini@aeoi.org.ir
Khoshnoodi
M
M
Ansarinejad
A
A
Torkzadeh
F
F
Jafarizadeh
M
M
D000465:Algorithms; D002138:Calibration; D016009:Chi-Square Distribution; D005720:Gamma Rays; D009010:Monte Carlo Method; D011874:Radiometry / Q000295:instrumentation*