An attosecond time-resolved study of strong-field atomic photoionizationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Местоположение издательства:[Bristol, UK], England
Первая страница:F299
Последняя страница:F305
Аннотация:The time evolution of atomic photoionization by an intense few-cycle laser
pulse is theoretically investigated. A possible modification of the recent
attosecond tunnelling experiment in Uiberacker et al (2007 Nature 446 627) is
proposed, which consists of measuring the yield of the doubly charged Li ions
produced by the combined action of a strong few-cycle infrared pulse and an
ultrashort (attosecond) extreme ultraviolet (XUV) pulse. We predict the results
of such an experiment, based on the numerical solution of the time-dependent
Schr¨odinger equation, which describes the atomic electron in a strong laser
field. The influence of the XUV pulse is treated in the sudden approximation.
It is shown that the dependence of the double ionization cross section on the
time delay between the two pulses reflects the time evolution of the strong-field
ionization. We demonstrate that even more detailed information can be gained
from the forward–backward asymmetry of the photoelectron emission.