1. Department of Physics, Tsinghua Vniversity, Beijing, China;2. Institute of fieoretical Physics, Academia Sinica, P. O. Box 2735, Beijing, China;3. Wuhan Institute of Physics, Academia Sinica, Wuhan, China
Abstract:
The ionized Lifetime of the hydrogen negativeion in a uniform electric field is again calculated by using improved perturbation theory.The choice of the H--ion wave function and the normalization of wave function of continuous state are discussed. The numerical calculations by using Rotenberg-Stein wave function with five parameters are performed. Comparison of our results with experimental results obtained by G. M. Stinson et al. is given.