51 citations · 110 across the 7 of their papers we have counts for
7 papers
Multiphoton ionization and stabilization of helium in superintense xuv fields
S. A. Sørngård, S. Askeland, R. Nepstad +1
Multiphoton ionization of helium is investigated in the superintense field regime, with particular emphasis on the role of the electron-electron interaction in the ionization and s…
The role of final state correlation in double ionization of helium: a master equation approach
Sølve Selstø, Tore Birkeland, Simen Kvaal +2
The process of nonsequential two-photon double ionization of helium is studied by two complementary numerical approaches. First, the time-dependent Schr{ö}dinger equation is solved…
Nonsequential Two-Photon Double Ionization of Atoms: Identifying the Mechanism
Morten Førre, Sølve Selstø, Raymond Nepstad
We develop an approximate model for the process of direct (nonsequential) two-photon double ionization of atoms. Employing the model, we calculate (generalized) total cross section…
A numerical study of two-photon ionization of helium using the Pyprop framework
R. Nepstad, T. Birkeland, M. Førre
Few-photon induced breakup of helium is studied using a newly developed ab initio numerical framework for solving the six-dimensional time-dependent Schroedinger equation. We prese…
Dynamic correlation in high-harmonic generation for helium atoms in intense visible lasers
G. A. McKenna, R. Nepstad, J. F. McCann +1
We investigate the effect of dynamic electron correlation on high-harmonic generation in helium atoms using intense visible light (λ=390nm). Two complementary approaches are used w…
Quantum control theory for coupled 2-electron dynamics in quantum dots
R. Nepstad, L. Sælen, I. Degani +1
We investigate optimal control strategies for state to state transitions in a model of a quantum dot molecule containing two active strongly interacting electrons. The Schrodinger…