%0 Journal Article
%T Monte Carlo Simulation of Angular Response Function of Airborne Gamma Spectrometer
%A Qianyin Wan
%A Yaohan Hu
%A Ruiyang Xu
%A Qiushi Liu
%J Open Access Library Journal
%V 7
%N 8
%P 1-11
%@ 2333-9721
%D 2020
%I Open Access Library
%R 10.4236/oalib.1106638
%X The angular response function F(¦È, ¦Õ) is used as an airborne gamma spectrometer to measure the basic physical quantity of the contribution of each nuclide to the total dose rate by the all-energy peak method, which is facing the difficulty of experimental calibration. In this paper, the Monte Carlo program MCNP5 is used to calculate the full-energy peak angle response function F(¦È, ¦Õ) of a single NaI(Tl) crystal (40 cm ¡Á 10 cm ¡Á 5 cm) to Cs-137. It has been verified that when the point source is directly below the spectrometer, the relative error between the dose rate calculated by a single crystal ¦Ã spectrometer using the all-energy peak method and the dose rate measured by the high-pressure ionization chamber does not exceed 15%. When the distance between the crystal and the point source is 7 m and the elevation and azimuth angles are both 45°, the relative error between the two is 13.891%, which verifies the feasibility of the analog scale of the angular response function.
%K Angular Response Function
%K MCNP5
%K Analog Scale
%U http://www.oalib.com/paper/5437094