240 citations · 332 across the 8 of their papers we have counts for
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R-matrix with time-dependence calculations for three-sideband RABBITT in helium
A. T. Bondy, J. C. del Valle, S. Saha +4
Following up on a recent paper [Bharti et al., Phys. Rev. A 109 (2024) 023110], we compare the predictions from severalR-matrix with time-dependence calculations for a modified thr…
Photoelectron momentum distributions in the strong-field ionization of atomic hydrogen by few-cycle elliptically polarized optical pulses
Nicolas Douguet, Klaus Bartschat
We investigate the strong-field ionization of atomic hydrogen in a few-cycle elliptically polarized infrared pulse by solving the time-dependent Schrödinger equation. The dependenc…
Above-threshold ionization in neon produced by combining optical and bichromatic XUV femtosecond pulses
Nicolas Douguet, Alexei N. Grum-Grzhimailo, Klaus Bartschat
We consider the ionization of neon induced by a femtosecond laser pulse composed of overlapping, linearly polarized bichromatic extreme ultraviolet and infrared fields. In particul…
Electron-impact excitation of N using the B-spline R-matrix method: Importance of the target structure description and the size of the close-coupling expansion
L. Fernández-Menchero, O. Zatsarinny, K. Bartschat
There are major discrepancies between recent ICFT (Intermediate Coupling Frame Transformation) and DARC (Dirac Atomic R-matrix Code) calculations (Fernández-Menchero et al. 2014, A…
Displacement effect in strong-field atomic ionization by an XUV pulse
Igor A. Ivanov, Anatoli S. Kheifets, Klaus Bartschat +4
We study strong-field atomic ionization driven by an XUV pulse with a non\-zero displacement, the quantity defined as the integral of the pulse vector potential taken over the puls…
Hyperfine-changing transitions in He II and other one-electron ions by electron scattering
Klaus Bartschat, H. R. Sadeghpour
We consider the spin-exchange (SE) cross section in electron scattering from He\,{\scriptsize II}, which drives the hyperfine-changing \hbox{3.46 cm} (8.665 GHz) line transitio…