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核工业部北京核仪器厂(原北京综合仪器厂)科研人员在一些医院征求用户意见时,发现前几年已销售的400多台FT-603型井型γ闪烁探头作为放射免疫等低能γ测量时,由于原采用的晶体ST-103型碘化钠(铊)晶体井壁厚、尺寸大,造成了本低高、探测效率低的缺点。
Nuclear Industry Department of Beijing Nuclear Instrument Factory (formerly Beijing General Instrument Factory) Researchers in some hospitals for user comments, found that a few years ago has sold more than 400 FT-603 well-type γ-ray scintillation probe as a radioimmunoassay and other low-energy γ measurement , The low thickness and low detection efficiency of the ST-103 type crystal body of sodium iodide (thallium) used in the prior art due to the wall thickness and the large size of the well.