ASSESSMENT OF UNDERGROUND GAMMA-RAY FLUXES AT A DEPTH OF 1230-M
ASSESSMENT OF UNDERGROUND GAMMA-RAY FLUXES AT A DEPTH OF 1230-M
复制标题
1230米深度地下伽马射线通量的评估
DOI：
10.1016/0168-9002(84)90054-8
复制
发表时间：
1984
影响因子：
1.4
通讯作者：
N. Wearne
中科院分区：
文献类型：
--
作者：
A. Bakich;M. Omori;L. Peak;N. Wearne
用碘化钠晶体探测器测量了某银铅锌矿地下1230米深处的伽马射线能谱。使用铅块和石蜡块进行了未屏蔽和屏蔽的运行。结果考虑了三个不同的能量范围，0-3 MeV， 3-6 MeV和大于6 MeV。根据探测器周围矿体中常见的同位素，可以预测低能结果。中间能量的结果表明在晶体组装中有一些残余的α活动，而高能的结果表明伽马的通量远远超过10兆电子伏。要大幅度减少这种通量，就需要非常纯的屏蔽。
A sodium iodide crystal detector has been used to measure gamma ray spectra at a depth of 1230 m underground in a silver, lead and zinc mine. Both unshielded and shielded runs using blocks of lead and paraffin were taken. The results are considered in three different energy ranges, 0–3 MeV, 3–6 MeV and greater than 6 MeV. The low energy results are predictable in terms of the familiar isotopes to be expected in the ore body around the detector. The intermediate energy results indicate some residual alpha activity in the crystal assembly whilst the high energy results show a flux of gammas extending well past 10 MeV. Very pure shielding would be required to substantially reduce this flux.