A 3-d ray equation on optical trajectory of laser propagation in the laser-driven fusion is firstly proposed.
提出了激光聚变中激光传播的三维光学轨迹光路方程。
The cathode of the gun may be partially shielded magnetically. The paraxial-ray equation for describing the electron trajectory in the accelerating region is solved in closed form.
阴极处磁场可以具有任意屏蔽程度，得到了在加速场内描写电子轨迹的傍轴方程的解析解。
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