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11 papers · 2 filters
Nuclear excitation by two-photon electron transition
A. V. Volotka, A. Surzhykov, S. Trotsenko +3
A new mechanism of nuclear excitation via two-photon electron transitions (NETP) is proposed and studied theoretically. As a generic example, detailed calculations are performed fo…
Multiconfiguration calculations of electronic isotope shift factors in Al I
Livio Filippin, Randolf Beerwerth, Jörgen Ekman +3
The present work reports results from systematic multiconfiguration Dirac-Hartree-Fock calculations of electronic isotope shift factors for a set of transitions between low-lying s…
Relativistic calculations of the non-resonant two-photon ionization of neutral atoms
Jiri Hofbrucker, Andrey V. Volotka, Stephan Fritzsche
The non-resonant two-photon one-electron ionization of neutral atoms is studied theoretically in the framework of relativistic second-order perturbation theory and independent part…
Prominent role of multi-electron processes in K-shell double and triple photodetachment of oxygen anions
S. Schippers, R. Beerwerth, L. Abrok +7
The photon-ion merged-beams technique was used at a synchrotron light source for measuring absolute cross sections of double and triple photodetachment of O ions. The experim…
Two-color above threshold ionization of atoms and ions in XUV Bessel beams and combined with intense laser light
D. Seipt, R. A. Müller, A. Surzhykov +1
The two-color above-threshold ionization (ATI) of atoms and ions is investigated for a vortex Bessel beam in the presence of a strong near-infrared (NIR) light field. While the pho…
Electric dipole polarizabilities of Rydberg states of alkali atoms
V. A. Yerokhin, S. Y. Buhmann, S. Fritzsche +1
Calculations of the static electric-dipole scalar and tensor polarizabilities are presented for two alkali atoms, Rb and Cs, for the , , and stat…