ray equation

It outlines the electromagnetic pulse induced by γ-ray radiated from nuclear explosion bomb and the Keller box method for solving Maxwell equation. Comparison of results calculated from γ-EMP program with those from SHARP program is given as well.

主要叙述核爆弹体释放出的γ射线所形成的电磁脉冲以及解Maxwel方程组的KelerBox方法，并且给出了γ－EMP程序同美国SHARP程序的计算结果。

Ray equation is derived from Fermat's principle in variation form.

本文由费马原理的变分形式,导出光线微分方程.

In our experiments, the isothermal equation of state of wBN is studied by two different in situ high pressure X-ray diffraction methods at room temperature.

使用两种不同的高压在位X光衍射法，研究了用爆炸法合成的纤锌矿型氮化硼（wBN）在室温下的等温状态方程。

In this paper, starting from the ray equation, by means of numerial compu-tation, we have get ray trajectories in GRIN rod lens with arbitrary index profile and then obtained the optimun structure parameters of the wavelength multiplexer when its insertion loss is minimum.

本文直接从光射线轨迹方程出发，数值求解任意折射率GRIN棒中射线轨迹，从而得到最低插入损耗下的最佳结构参量。

The equation of X-ray flux was deduced with the transverse divergence of electron and laser beams in the interaction area being taken into account. The relationship between the size of electron and laser beams and both X-ray flux and spectra flux was analyzed.

本文在考虑相互作用区内电子束和激光束横向发散的前提下，推导了激光同步辐射源X射线通量的计算公式，讨论了激光束和电子束束腰尺寸对X射线通量和谱通量的影响。

And the thickness of ultra-thin layer was derived from small angle x-ray diffraction using the Bragg's equation witha refraction correction.

讨论了利用多层膜的小角x射线衍射谱理论分析，导出了单层膜厚度和多层膜周期厚度的测量方法。