Abstract
The time-dependent close-coupling method based on the Dirac equation is used to calculate single and double photoionization cross sections for Ne8+ in support of planned FLASH/DESY measurements. The fully correlated ground state radial wavefunction is obtained by solving a time independent inhomogeneous set of close-coupled equations. The repulsive interaction between electrons includes both Coulomb and Gaunt interactions. A Bessel function expression is used to include both dipole and quadruple effects on the radiation field interaction. Propagation of the time-dependent close-coupled equations yields single and double photoionization cross sections for Ne8+ in reasonably good agreement with distorted-wave and R-matrix results.
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