Theoretical treatment of double photoionization of helium using a B-spline implementation of exterior complex scaling -: art. no. 032707

Calculations of absolute triple-differential and single-differential cross sections for helium double photoionization are performed using an implementation of exterior complex scaling in B-splines. Results for cross sections, well converged in partial waves, are presented and compared with both experiment and earlier theoretical calculations. These calculations establish the practicality and effectiveness of the complex B-spline approach to calculations of double ionization of atomic and molecular systems.