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5 papers · 2 filters
An {\it ab initio} relativistic coupled-cluster theory of dipole and quadrupole polarizabilities: Applications to a few alkali atoms and alkaline earth ions
B. K. Sahoo
We present a general approach within the relativistic coupled-cluster theory framework to calculate exactly the first order wave functions due to any rank perturbation operators. U…
Theoretical studies of the atomic transitions in boron-like ions: Mg VIII, Si X and S XII
H. S. Nataraj, B. K. Sahoo, B. P. Das +2
In this paper, we have carried out the calculations of the weighted oscillator strengths and the transition probabilities for a few low-lying transitions of boron-like ions: Mg VII…
Photoionization of helium-like ions in asymptotic nonrelativistic region
A. I. Mikhailov, A. V. Nefiodov, G. Plunien
The cross section for single K-shell ionization by a high-energy photon is evaluated in the next-to-leading order of the nonrelativistic perturbation theory with respect to the ele…
Nonrelativistic double photoeffect on lithiumlike ions at high energies
A. I. Mikhailov, I. A. Mikhailov, A. V. Nefiodov +1
The total cross section for double ionization of lithiumlike ions by a high-energy photon is calculated in leading order of the nonrelativistic perturbation theory. The partial con…
The Coulomb four-body problem in a classical framework: Triple photoionization of lithium
Agapi Emmanouilidou, Jan M. Rost
Formulating a quasiclassical approach we determine the cross section for the complete four-body break-up of the lithium ground state following single photon absorption from thresho…