A Study on Radiation Triggered Laser as Neutron Detector

本研究的目标是对一种新的激光振荡模式下的激光辐射进行实验研究，称为辐射触发器激光，即辐射探测器。这个新的操作模式的3 He-Ne激光管通过中子辐照在前一年发现，激光振荡启动电压的降解效应已经发现到中子通量水平的增加.1。辐射触发器激光器其他商业3 He-Ne激光器管的操作电路被称为高频率振荡模式，在恒定电压模式下找到了不可用的辐射触发器激光器实验。最近的二极管激光器也不可用。根据这些结果，这种辐射触发激光器的操作模型可以被认为只是与辐射气体计数器操作模型相同，在应用支架电压下可以被增加气体倍增因子的地方。激光光放大用3 He-Ne气体细胞在中子辐射下当3 He-Ne气体细胞是由中子辐射产生的反向人口脂肪，而3 He-Ne激光光可以通过这个气体细胞被放大，在哪里可以确认实验。放大增益可以由中性通量水平增加。这可能被认为是由于开始阶段的生长到中子泵激光器上，这也可能被认为是另一种辐射触发激光器。结论和讨论辐射触发激光器的基本模型可以被简化。反应堆中子探测系统使用这种辐射触发器激光器已经被讨论过。基于这个模型，更多的实用研究期望对这个辐射触发激光器作为中子探测器的设计和演示。

The aim of this research is an experimental study on a new laser oscillation mode by radiation irradiation on laser tude, named as radiation trigger laser, as a radiation detector. This new operation mode of 3He-Ne laser tube by neutron irradiation has been found in the previous year, where the decreasing effect of laser oscillation starting voltage has been found according to the increase of neutron flux level.1. Model of Radiation Trigger LaserOther commercial 3He-Ne laser tube, the operation circuit of which is called as high frequency oscillation mode instead of the constant voltage mode, has been found not to be available as the radiation trigger laser experimentally. Recent diode laser is also not available. From these results, the operation model of this radiation trigger laser can be considered just as the same as the radiation gas counter operation model, where the gas multiplication factor can be increased by the applied stationery voltage.2. Laser Light Amplification by 3HeーNe gas Cell under Neutron IrradiationWhen the 3HeーNe gas cell is made to be inverse population atate by neutron irradiation, the 3HeーNe laser light can be amplified by passing through this gas cell, which can be confirmed experimentally. The amplification gain can be increased by the neutron flux level. This effect can be considered as the beginning stage growing to the neutron pumping laser, and this is also considered as another radiation trigger laser.3. Conclusion and DiscussionFundamental model of radiation trigger laser can be summarized. Reactor neutron detection system using this radiation trigger laser has been discussed. Based on this model, more practical study is expected on design and demonstration of this radiation trigger laser as neutron detector.