Monte Carlo method for determining the response of portable gamma detector for in situ measurement of terrestrial gamma ray field

2016 ◽  
Vol 27 (4) ◽  
Author(s):  
Boubaker Askri
2019 ◽  
Vol 53 (3) ◽  
pp. 16-22
Author(s):  
Jinzhao Zhang ◽  
Hongzhi Li ◽  
Xianguo Tuo

AbstractIn-situ measurement of marine sediment radioactivity does not destroy the stratification of radionuclides in the sediment. We develop a novel seabed sediment radioactive measurement technique using a High Purity Germanium (HPGe) detector. The overall measurement system is designed, and the detector energy calibration is performed. The efficiency is calculated based on Monte Carlo simulations using the MCNP5 code. We compared the efficiency and energy resolution with the NaI(Tl) detection through experiments. NaI(Tl) detection is incapable of identifying the 137Cs artificial nuclides in seabed sediments due to the energy resolution limit. Hence, underwater HPGe detection is utilized due to its high energy resolution, which enables the detection of artificial nuclides 137Cs. The proposed method is of great significance in evaluating marine radioactive pollution.


Soil Science ◽  
1987 ◽  
Vol 144 (6) ◽  
pp. 425-436 ◽  
Author(s):  
P. BERTUZZI ◽  
L. BRUCKLER ◽  
Y. GABILLY ◽  
J. C. GAUDU

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