Acta Optica Sinica, Volume. 22, Issue 5, 513(2002)
Fine Structures in Angular Distribution of Above-Threshold Ionization
Using the nonperturbative scattering theory developed for multiphoton ionization with the inclusion of spontaneous emission, the angular differential rates for above-threshold ionization (ATI) are obtained. Besides the main lobe structure, our numerical calculations reproduce the fine structures in the angular distribution of ATI peaks observed by Nandor et al.. The fine structures are attributed to the spontaneous emissions when the photoelectron exits the laser field.
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. Fine Structures in Angular Distribution of Above-Threshold Ionization[J]. Acta Optica Sinica, 2002, 22(5): 513