radioactive source

Integrated geophysical investigation to the chamber stored radioactive materials source

废弃放射源贮存池的综合地球物理勘查

Lead-bismuth eutectic ( LBE) cooled reactor is fast reactor, and different from PWR on coolant, cover gas, structure and etc. Radioactive source term is also characteristic.

铅铋反应堆是快中子反应堆，与压水堆在冷却剂、保护气体等结构和材料上有明显区别。

the examination of surface pollution and leakage to part of sealed radioactive source commonly used in logging and experiment are carried out by well logging company of shengli petroleum administrative bureau.

胜利石油管理局测井公司对部分测井和实验常用的密封型放射源进行了表面污染与泄漏检验。

By this method, the spatiotemporal distribution of radioactive nuclides in atmosphere in different terrain characteristics, different weather situations for instantaneous or continuous leaking source were obtained, and the dry or wet deposition quantities on the ground were also acquired.

该方法可计算核事故中连续点源和瞬时点源在不同气象、地形条件下的浓度分布，并可获得地面的干沉积率和湿沉积率。

In order to estimate the retention and residual quantity, it has to know the three-dimensional distribution of the radioactive source. But the y camera can only obtain the two-dimensional image.

但Y相机只能得到放射源的二维图像，而只有得到放射源的三维分布，才能实现对滞留量和残留量进行比较准确的估算。

The activity of the large area source is 22. 2 GBq and the deposition efficency of 63Ni is over 96%. The radioactive material 63Ni is uniformly distributed on the copper matrix and the nonuniformity is less than 5%.

制备的63Ni低能β放射源活度高达22.2GBq，63Ni的沉积率＞96%，放射源的不均匀度＜5%。

Using coincidence method, transit time spread ( TTS) is measured with Cherenkov light produced by cascade γ radioactive source, 60Co on photocathode window of photomultiplier tube ( PMT).

采用符合方法，测量级联γ放射源60Co在光电倍增管（PMT）光阴极窗上激发产生的切伦科夫光，从而测定PMT渡越时间涨落。

Away from high-temperature source and radioactive sources to avoid acids, alkalis, oils and sharp materials placed.

给挨近矮温、热源及不收射源,制止与酸 、 碱 、 油类和不团软精神等一路不领取.