摘要
ThreeCoulombwave 方法被采用对待这个过程(e， 2e ) 同时的电离和刺激到氦的 n=2 状态，与光线、尖的相关 wavefunction 他目标。三倍的微分生气的节在在 5.50， 1.50 和 0.57 keV 的事件精力的很不对称的共面的几何学计算、分析。结果与绝对大小相比并且理论第一和第二出生的近似。现在的三重地微分的生气的节(TDCS ) 被发现在对试验性的数据品质上的好同意。在 TDCS 结构注意的区分的特征是存在强烈撤退为某些参数比二进制山峰甚至大的山峰，为在高、中间的精力的 singleionization 进程的一个不平常的特征。
Three-Coulomb-wave method is employed to treat the process of （e, 2e） simultaneous ion- ization and excitation to the n=2 state of helium, with radial and angular correlated wave-function of He target. The triple differential cross sections are calculated and analyzed in very asymmetric coplanar geometry at incident energies of 5.50, 1.50 and 0.57 keV. Results are compared with the absolute measurements and the theoretical first and second Born approximation. The present triply differential cross section （TDCS） is found to be in good agreement with experimental data qualitatively. The distinguishing feature noted in TDCS structure is the presence of intense recoil peak that for certain parameters is even larger than the binary peak, an unusual feature for the single-ionization process at high and intermediate energies.
