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http://dx.doi.org/10.7742/jksr.2017.11.3.123

Study of 4π Compton Suppression Spectrometer by Monte Carlo Simulation  

Jang, Eun-Sung (Department of Nuclear physics and Radiation Technology Research Center, Pusan National University)
Lee, Hyo-Yeong (Department of Radiological Science, Dong Eui University)
Publication Information
Journal of the Korean Society of Radiology / v.11, no.3, 2017 , pp. 123-129 More about this Journal
Abstract
Compton suppression apparatus using the Compton scattering response, by inhibiting part of the spectrum Compton continuum Compton continuum in the area of the peak analysis of the gamma rays that enables a clearer device. In order to find out the geometry structure of high-purity germanium detector(HPGe) -NaI(TI) and to optimize the effect of movement, Monte Carlo simulation was used to grasp the behavioral characteristics of Compton suppression and compare several layout structures. And applied to the cylinder beaker used for the environmental measurement by using the efficiency according to the distance. For the low-energy source such as 81 keV, the Compton continuum is scarcely developed and the suppression effect is also insignificant because the scattering cross-section of the Compton effect is relatively low. In the spectrum for the remaining energy, it can be seen that the Compton continuum part is suppressed in a certain energy range. Compton suppression effect was not significantly different from positional shift. average reduction factor(ARF) value was about 1.08 for 81 keV and about 1.23 for 1332.4keV energy at the highest value. It can be seen that suppression over the Compton continuum region of the energy spectrum is a more appropriate arrangement. Therefore, it can be applied to various environmental sample measurement through optimized structure.
Keywords
Compton suppression Spectrometer; PENELOPE; Comparison factor;
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1 M. Tsutsumi, T. Oishi, N. Kinouchi, R. Sakamoto and M. Yoshida, "Design of an anti-Compton Spectrometer for Low-level Radioactivive Wastes using Monte Carlo Techniques", J. Nucl. Sci. & Tech. Vol. 39, No. 9, pp. 957-963. 2002.   DOI
2 G. F. Knoll, Radiation Detection and Measurement, John Wiley & Sons, Inc, 3rd ed, New York, pp. 428, 2000.
3 Lowe .Lilly Kiang et al. "A Study on T-shape Compton Suppression Spectrometer by Monte Carlo Simulation", Nuclear Instruments and Methods in Physics Research A, Vol. 327, pp. 427, 1993.   DOI
4 Ceta. Michael et al, "Monte Carlo Simulation of Complex Germanium Detector Systems and Compton Suppression Spectrometers", Nuclear Instruments and Method in Physics Research A, Vol. 251, pp. 119, 1986.   DOI
5 "Compton Suppression. Made Easy", Canberra Application Note, AN-D-8901.
6 Fiat. Slivan. Jack. Mill, Fernandez-Varea, J. Sempau, PENELOPE. A code system for Monte Carlo simulation of electron and photon transport. in: Workshop Proceeding, Issy-les Moulineaux, France, pp. 7-10 July, 2003.
7 Bar'o Juie., J. Sempau, Ja .Mack. Fern'andez-Varea and F. Salvat , "PENELOPE: an algorithm for Monte Carlo simulation of the penetration and energy loss of electrons and positrons in matter", Nuclear. Instrument. Meth. B 100, pp. 31-46. 1995.   DOI
8 E. S. Jang, B. S. Chang, "A Germanium Detector Structure PENELOPE Characteristic Analysis by Computer Simulation", Journal of Korea Society of Radiology, Vol. 2, pp. 73-77, 2015.
9 Debertin, Kelsa., Helmer, Rui. Guo., ${\gamma}$- and X-ray spectrometer with semiconductor detectors, North Holland, Amsterdam, 1988.
10 Koren. M, Martincic, Radiation. Measurements.
11 Measurement of total-peak-peak ratio of a semiconductor gamma-ray detector. Nuclear. 1996.
12 G. F. Knoll, Radiation Detection and Measurement, John Wiley & Sons, Inc., 3rd ed., New York, pp. 51, 2000.
13 Mc. Namara A.L, Heijnis H., Fierro D, Reinhard MI. The determination of the efficiency of a Compton suppressed HPGe detector using Monte Carlo simulations. J. Environment. Radioactivity. No. 106, pp. 1-7, 2012..