将要叙述一种以精确空间电荷流解为基础的交叉埸电子槍的桔构和试验。这类槍的所有特征参量能由解析方法得到。实验证明:这种槍的工作基本上和预计的一样。这种槍有一适中的高收敛比并产生一很接近于平面布里渊流的电子注。安德逊的工作指出:由这类枪产生的交叉场电子注与其它类型的枪产生的类似电子注相比较,可能有较低的噪声。 A description will be given of the structure and test of a cross-electron gun based on accurate space charge flow. All the characteristic parameters of such guns can be obtained by analytical methods. Experiments show that: The work of this gun is basically the same as expected. The gun has a moderately high convergence ratio and produces an electron injection close to the plane Brillouin flow. Anderson's work shows that cross-field electron injection by such guns may have lower noise than similar electron guns created by other types of guns.