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Ionization rates and harmonic generation for H interacting with laser pulses of λ = 1064 nm and peak intensities in the range 2 x 1013-2 x 1014 W cm-2

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dc.contributor.author Dionissopoulou, S en
dc.contributor.author Mercouris, Th en
dc.contributor.author Nicolaides, CA en
dc.date.accessioned 2014-03-01T01:44:46Z
dc.date.available 2014-03-01T01:44:46Z
dc.date.issued 1996 en
dc.identifier.issn 09534075 en
dc.identifier.uri http://hdl.handle.net/123456789/24478
dc.title Ionization rates and harmonic generation for H interacting with laser pulses of λ = 1064 nm and peak intensities in the range 2 x 1013-2 x 1014 W cm-2 en
heal.type journalArticle en
heal.identifier.primary 10.1088/0953-4075/29/20/028 en
heal.identifier.secondary http://dx.doi.org/10.1088/0953-4075/29/20/028 en
heal.publicationDate 1996 en
heal.abstract We applied the state-specific expansion approach (SSEA) to the solution of the time-dependent Schrödinger equation describing the interaction of H with laser pulses of λ = 1064 nm and peak intensities I0 = 2 x 1013, 6 x 1013, 1 x 1014 and 2 x 1014 W cm-2, and computed ionization rates and high-order harmonic spectra. For the first three cases, our results are compared with those of Krause and co-workers (Krause J L, Schafer K J and Kulander K C 1992 Phys. Rev. A 45 4998) who employed the grid method. Whereas for I0 = 1 x 1014 W cm-2 convergence difficulties were reported for the grid method, no such difficulties were found for the SSEA. Given this fact, we tackled the problem of computing the harmonic spectrum for I0 = 2 x 1014 W cm-2, the most difficult case treated thus far. This spectrum shows a cut-off at the 65th harmonic (3.17 Up + Ip) and an extended plateau containing low-intensity harmonics up to the 181st. The ionization rate is 1.7 x 1013 s-1 while at the end of the pulse 19.5% of the system is in the 1s ground state and 2.6% in the bound states up to n = 20, l = 19. en
heal.journalName Journal of Physics B: Atomic, Molecular and Optical Physics en
dc.identifier.doi 10.1088/0953-4075/29/20/028 en
dc.identifier.volume 29 en
dc.identifier.issue 20 en
dc.identifier.spage 4787 en
dc.identifier.epage 4794 en


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