In the first Born approximation and the soft-photon approximation, the laser-assisted electron-atomic-hydrogen free-free transition is investigated with taking the exchange effect into acount.

• 在一级玻恩近似和软光子近似下；研究了激光场中电子对氢原子基态的自由自由跃迁；并考虑入射电子对束缚电子的交换效应.