Abstract：
:A three-dimensional semiclassical model is used to study double ionization of Ar when driven by a near-infrared and near-single-cycle laser pulse for intensities ranging from 0.85 × 1014 W/cm2 to 5 × 1014 W/cm2. Asymmetry parameters, distributions of the sum of the two electron momentum components along the direction of the polarization of the laser field and correlated electron momenta are computed as a function of the intensity and of the carrier envelope phase. A very good agreement is found with recently obtained results in kinematically complete experiments employing near-single-cycle laser pulses. Moreover, the contribution of the direct and delayed pathways of double ionization is investigated for the above observables. Finally, an experimentally obtained anti-correlation momentum pattern at higher intensities is reproduced with the three-dimensional semiclassical model and shown to be due to a transition from strong to soft recollisions with increasing intensity.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Chen A,Kübel M,Bergues B,Kling MF,Emmanouilidou Adoi
10.1038/s41598-017-07635-5subject
Has Abstractpub_date
2017-08-08 00:00:00pages
7488issue
1issn
2045-2322pii
10.1038/s41598-017-07635-5journal_volume
7pub_type
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