CAJ | 학술논문

在坑道内进行γ能谱测量时，其探测结果会受到来自矿井四周的γ射线影响，测量结果不能反映其真实值。为了得到较为真实的值，本文通过MCNP程序对γ能谱的外屏蔽设置在不同材料，厚度及形状的情况下进行模拟，最终得出采用厚度为1 cm铅屏蔽体，外形结构使用圆柱形的屏蔽体；同时采用不同源项设置，得出不同能量段下的透射系数，得出优化结果，为今后矿井下的能谱测定提供定值。
재갱도내진행γ능보측량시，기탐측결과회수도래자광정사주적γ사선영향，측량결과불능반영기진실치。위료득도교위진실적치，본문통과MCNP정서대γ능보적외병폐설치재불동재료，후도급형상적정황하진행모의，최종득출채용후도위1 cm연병폐체，외형결구사용원주형적병폐체；동시채용불동원항설치，득출불동능량단하적투사계수，득출우화결과，위금후광정하적능보측정제공정치。
When γspectrometry in the trenches, and the measurement results will be influenced from the γspectrometry around the mine, the measurement results do not reflect its true value.In order to obtain more re-alistic value, in this paper, though the simulation program by MCNP spectrum ofγouter shield settings under different material, thickness and shape, the final results with a thickness of 1 cm lead shielding body and the structure uses a cylindrical shape shield.While using a different source term settings, the transmission coeffi-cient obtained under different energy segments, obtained optimal results, providing value for future mine under Spectrometry.