Journal
PHYSICAL REVIEW A
Volume 102, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.102.023101
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Funding
- Alexander von Humboldt Foundation
- Ministry for Education, Science and Youth, Canton Sarajevo, Bosnia and Herzegovina
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Over the past three decades numerous numerical methods for solving the time-dependent Schrodinger equation within the single-active electron approximation have been developed for studying ionization of atomic targets exposed to an intense laser field. In addition, various numerical techniques for extracting the photoelectron spectra from the time-dependent wave function have emerged. In this paper we compare photoelectron spectra obtained by either projecting the time-dependent wave function at the end of the laser pulse onto the continuum state having the proper incoming boundary condition or by using the window-operator method. Our results for three different atomic targets show that the boundary condition imposed onto the continuum states plays a crucial role for obtaining correct spectra accurate enough to resolve fine details of the interference structures of the photoelectron angular distribution.
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