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矿物被激发而发光 ,光通量极其小 ,其检测属于微弱光信号检测的范畴 .结合传统的弱光信号的光电探测方法 ,研究了一种以电荷耦荷探测器 (简称CCD)为核心的新的矿物热发光信号的探测方法 ,并以长石矿物的三维热释光谱图为例 ,分析了该光电探测方法的特点 .据实验结果可知 ,长石矿物的热释光谱图的辐射剂量响应的灵敏度整体上比石英的灵敏度大得多 ,其谱图从光子能量角度可以分成蓝光波段和红光波段两部分 ,而且红光信号比蓝光信号稳定 ,重现性好 ,峰峰值易分离等 ;采用以电荷耦荷探测器为核心的光电探测系统 ,能够较好地区分矿物受激发光的光子能量分布 .
The minerals are excited and emit light, the luminous flux is extremely small, and the detection belongs to the category of weak optical signal detection.Combining with the traditional photoelectric detection method of weak optical signal, a new type of charge coupled detector (CCD) The method of detecting the thermoluminescence signal of mineral and the characteristics of the photoelectric detection method are analyzed by taking the three-dimensional pyrogram of feldspar mineral as an example.It can be seen from the experimental results that the sensitivity of the radiation dose response of the pyrrhotic spectrum of feldspar minerals The overall sensitivity than quartz is much larger, the spectrum from the photon energy point of view can be divided into two parts of the blue band and red band, and the red signal than the blue signal stability, reproducibility, peak-to-peak separation; using Charge-coupled-charge detector as the core of the photoelectric detection system, can better distinguish the energy of photons emitted by the mineral excitation energy distribution.