Authors
Hong Liu, Yunquan Liu, Libin Fu, Guoguo Xin, Difa Ye, Jie Liu, XT He, Yudong Yang, Xianrong Liu, Yongkai Deng, Chengyin Wu, Qihuang Gong
Publication date
2012/8/31
Journal
Physical review letters
Volume
109
Issue
9
Pages
093001
Publisher
American Physical Society
Description
We measure photoelectron angular distributions of single ionization of krypton and xenon atoms by laser pulses at 1320 nm, , and observe that the yield of near-zero-momentum electrons in the strong-field tunneling ionization regime is significantly suppressed. Semiclassical simulations indicate that this local ionization suppression effect can be attributed to a fraction of the tunneled electrons that are released in a certain window of the initial field phase and transverse velocity are ejected into Rydberg elliptical orbits with a frequency much smaller than that of the laser; i.e., the corresponding atoms are stabilized. These electrons with high-lying atomic orbits are thus prevented from ionization, resulting in the substantially reduced near-zero-momentum electron yield. The refined transition between the Rydberg states of the stabilized atoms has implication on the THz radiation from gas targets in …
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