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考虑空间电荷效应，用数值方法模拟计算了电子束绝热展开过程．当初始磁感应强度与最终磁感应强度之比为Ｋ时，电子束横向温度由初始值Ｔｉ降低 Ｔｉ／Ｋ．研究了不同能量、不同流强的电子束达到预期的绝热展开倍数所需的最低磁感应强度．
Considering space charge effect, numerical simulation is used to simulate the adiabatic expansion process of electron beam. When the ratio of the initial magnetic induction intensity to the final magnetic induction intensity is K, the transverse electron beam temperature decreases from the initial value Ti by Ti / K. The lowest magnetic flux density needed to reach the desired adiabatic expansions of electron beams with different energies and different currents is studied.