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http://dx.doi.org/10.7582/GGE.2015.18.3.154

Neutron Induced Capture Gamma Spectroscopy Sonde Design and Response Analysis Based on Monte Carlo Simulation  

Won, Byeongho (Heesong Geotek Co., Ltd.)
Hwang, Seho (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Shin, Jehyun (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Jongman (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Ki-Seog (Heesong Geotek Co., Ltd.)
Park, Chang Je (Department of Nuclear Engineering, Sejong University)
Publication Information
Geophysics and Geophysical Exploration / v.18, no.3, 2015 , pp. 154-161 More about this Journal
Abstract
For efficiently designing neutron induced gamma spectroscopy sonde, Monte Carlo simulation is employed to understand a dominant location of thermal neutron and classify the formation elements from the energy peak of capture gamma spectrum. A pulsed neutron generator emitting 14 MeV neutron particles was used as a source, and flux of thermal neutron was calculated from the twelve detectors arranged at each 10 cm intervals from the source. Design for reducing borehole effects using shielding materials was also applied to numerical sonde model. Moreover, principal elements and quantities of numerical earth models were verified through the energy spectrum analysis of capture gamma detected from a gamma detector. These results can help to enhance the signal-to-noise ratio, and determine an optimal placement of capture gamma detectors of neutron induced gamma spectroscopy sonde.
Keywords
neutron induced gamma spectroscopy sonde; Monte Carlo simulation; capture gamma; pulsed neutron generator; energy spectrum;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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