Fractal dynamics in the ionization of helium Rydberg atoms
Xu Xiulan1, Zhang Yanhui1, †, , Cai Xiangji2, Zhao Guopeng1, Kang Lisha1
       

Escape time plots for different scaled energies: (a) ɛ = −1.3, (b) ɛ = −1.4, (c) ɛ = −1.5.