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Application of Coulomb wave function discrete variable representation to atomic systems in strong laser fields
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10.1063/1.2358351
/content/aip/journal/jcp/125/15/10.1063/1.2358351
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/15/10.1063/1.2358351

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Convergence of the CWDVR method for different and values. The natural logarithm of the population as a function of time (in units of the laser period ) is shown for a laser wavelength of and a peak laser intensity of . (a) Results for different CWDVR grids (with and as indicated) are compared to the result of the FD method for time in the range . (b) A magnified version of (a) for time in the range . Note that in both panels the three curves representing the FD result and the two CWDVR results are nearly indistinguishable on the scale of the figure and appear as the lowest curve in each panel.

Image of FIG. 2.
FIG. 2.

The natural logarithm of the decay of the ground state and of populations within different spheres of radius for ionization of atomic H by a laser having frequency , peak intensity , a ramp up, and a flat top . remaining in the ground state, remaining within a sphere of radius , and remaining within the entire grid,

Image of FIG. 3.
FIG. 3.

(Color online) Depletion of the ground state of H by a static electric field having field strength of The natural logarithm of the ground state probability is shown as a function of the field duration. Results calculated by different CWDVR grids for different values ( in each case) are compared against the result calculated by the FD method with Note that the result is indistinguishable from the FD result on the scale of this figure.

Image of FIG. 4.
FIG. 4.

H ground state survival probability, , as a function of time in a static electric field. The field strength is taken to be (a) 0.005, (b) 0.04, (c) 0.06, and (d) These results are in perfect agreement with those by Durand and Paidarova (Ref. 59) and by Scrinzi (Ref. 57) (neither of which are shown here because they are indistinguishable from ours on the scale of the figures).

Tables

Generic image for table
Table I.

Comparison of CWDVR grid point distributions for different values of and . Note that equals the difference of the two grid points closest to .

Generic image for table
Table II.

Ionization rate for ionization of H by a linearly polarized laser of intensity and frequency . The present results are compared with the results of Chu and Cooper, (Ref. 54), Pont et al. (Ref. 55), and Kulander (Ref. 10). Intensities and ionization rates are presented in the form .

Generic image for table
Table III.

Multiphoton ionization rates for H for four different laser electric field strengths, , and seven photon energies . Present results are compared with those of Chu and Cooper (Ref. 54) (who used a nonperturbative non-Hermitian Floquet method).

Generic image for table
Table IV.

Ionization rate (in a.u.) for ionization of the ground state of H by a static electric field of strength . Results are compared with those of Scrinzi (Ref. 57), Peng et al. (Ref. 13), and Bauer and Mulser (Ref. 61).

Generic image for table
Table V.

Multiphoton detachment rates for for laser wavelengths , 1640, and and 11 intensities (ranging from to ). The present results using the CWDVR method are compared with results of Haritos et al. (Ref. 64) and of Telnov and Chu. (Refs. 65 and 66). The detachment rates are given in the form of .

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/content/aip/journal/jcp/125/15/10.1063/1.2358351
2006-10-19
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Application of Coulomb wave function discrete variable representation to atomic systems in strong laser fields
http://aip.metastore.ingenta.com/content/aip/journal/jcp/125/15/10.1063/1.2358351
10.1063/1.2358351
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