论文部分内容阅读
为了测量更广能量范围的等离子体辐射的硬X射线轫致辐射光谱,以获得激光等离子体超热电子能谱的特性,基于柱面弯曲晶体的分光原理,提出了透射晶体谱仪。为满足实验中光源到谱仪距离不同的需要,设计了Johann型可调节透射晶体谱仪。谱仪中的会聚狭缝设计成可移动的,位置随着光源到谱仪距离的变化而改变。通过理论计算获得了会聚狭缝位置变量与光源距离变化之间的关系,得出小角度(小于0.2 rad)入射时能够保证入射光线经过晶体后近似会聚于一点,并对谱仪具体设计时遇到的一些问题,给出了初步的理论分析和看法。该谱仪中会聚狭缝的可调节解除了谱仪到光源距离固定的限制;前端晶体的可更换,也增加了谱仪测量的灵活性。
In order to measure the hard X-ray bremsstrahlung spectrum of the plasma radiation in a wider energy range to obtain the characteristics of the laser plasma super-heated electron energy spectrum, a transmission crystal spectrometer is proposed based on the spectroscopic principle of the cylindrical bended crystal. In order to meet the needs of different distance from the light source to the spectrometer in the experiment, a Johann type adjustable transmission crystal spectrometer was designed. The converging slit in the spectrometer is designed to be movable, and the position changes as the distance from the light source to the spectrometer changes. The relationship between the position variation of the converging slit and the distance of the light source is obtained theoretically. It is concluded that the incidence angle of the incident light can be approximately converged at a small angle (less than 0.2 rad) To some of the problems, given the initial theoretical analysis and views. The convergence of the converging slit in the spectrometer relieves the restriction of the distance from the spectrometer to the light source; the interchangeability of the front end crystals also increases the flexibility of spectrometer measurements.