Photoelectron imaging of resonance-enhanced multiphoton ionization and above-threshold ionization of ammonia molecules in a strong 800-nm laser pulse

Song Le-Le^{1, 2, 3}, Sun Ya-Nan^{1, 3}, Wang Yan-Hui⁴, Wang Xiao-Chun^{1, 3}, He Lan-Hai^{1, 3}, Luo Si-Zuo^{1, 3}, Hu Wen-Hui^{1, 3}, Tong Qiu-Nan^{1, 3}, Ding Da-Jun^{1, 3}, Liu Fu-Chun^{1, 3, †}

NH₃ molecular hexapole focus curves. Curve B is for experimental results. Curves C, D, E, and F are for calculation results for | 111 〉 , | 211 〉 , | 212 〉 , and | 222 〉 rotational states, respectively. Curve G is for sum of theoretical results.