Abstract
The transition from the near-single to the multi-cycle regime in non-sequential double ionization of argon is investigated experimentally. Argon atoms are exposed to intense laser pulses with a center wavelength around 790 nm and the momenta of electrons and ions generated in the double ionization process are measured in coincidence using a reaction microscope. The duration of the near transform-limited pulses is varied from 4 to 30 fs. We observe an abrupt collapse of the cross-shaped two-electron momentum distribution 17 in the few-cycle regime. The transition to longer pulses is further accompanied by a strong increase in the fraction of anti-correlated to correlated electrons.
Item Type: | Journal article |
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Form of publication: | Publisher's Version |
Keywords: | non-sequential double ionization; coincidence spectroscopy; strong field physics |
Faculties: | Physics |
Subjects: | 500 Science > 530 Physics |
URN: | urn:nbn:de:bvb:19-epub-24240-3 |
ISSN: | 1367-2630 |
Language: | English |
Item ID: | 24240 |
Date Deposited: | 26. Mar 2015, 12:21 |
Last Modified: | 08. May 2024, 08:24 |