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Variation of harmonic generation from He interacting with short laser pulses of 5 eV as a function of pulse rise time and intensity

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dc.contributor.author Dionissopoulou, S en
dc.contributor.author Mercouris, T en
dc.contributor.author Nicolaides, CA en
dc.date.accessioned 2014-03-01T01:50:35Z
dc.date.available 2014-03-01T01:50:35Z
dc.date.issued 2000 en
dc.identifier.issn 1050-2947 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/26052
dc.subject.classification Optics en
dc.subject.classification Physics, Atomic, Molecular & Chemical en
dc.subject.other RARE-GASES en
dc.subject.other ELECTRON CORRELATION en
dc.subject.other HELIUM en
dc.subject.other IONS en
dc.subject.other SPECTRA en
dc.subject.other FIELDS en
dc.subject.other CM(-2) en
dc.subject.other STATES en
dc.subject.other ATOMS en
dc.subject.other KRF en
dc.title Variation of harmonic generation from He interacting with short laser pulses of 5 eV as a function of pulse rise time and intensity en
heal.type journalArticle en
heal.identifier.secondary 063402 en
heal.language English en
heal.publicationDate 2000 en
heal.abstract We have applied the state-specific expansion approach (SSEA) to the solution of the time-dependent Schrodinger equation describing the interaction of He with laser pulses of (h) over bar omega = 5 eV, which have a shape with a sharp rise and peak intensities in the range 5 x 10(14)-3.46 x 10(15) W/cm(2). The calculations include the effects of the state-specific self-consistent field, the electron correlation, and the n = 2 intrashell doubly excited states. The results show that, provided the pulses have fast rise times, neutral He can generate harmonics of higher order than previously thought before the He+ contribution takes over. The computed spectra agree with the observations of Sarukura et al. [Phys. Rev. A 43, 1669 (1991)]. In particular, the SSEA results reveal "anomalously" high peaks for the 13th and 21st harmonics, in agreement with experiment. en
heal.publisher AMERICAN PHYSICAL SOC en
heal.journalName PHYSICAL REVIEW A en
dc.identifier.isi ISI:000087567900061 en
dc.identifier.volume 6106 en
dc.identifier.issue 6 en


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