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The complex basis function (CBF) method applied to various atomic and molecular photoionization problems can be interpreted as an
method to solve the driven‐type (inhomogeneous) Schrödinger equation, whose driven term being dipole operator times the initial state wave function. However, efficient basis functions for representing the solution have not fully been studied. Moreover, the relation...
Photoionization cross-sections of various simple systems were calculated with variationally optimizing the complex orbital exponents in Gaussian-type basis functions within the framework of the complex basis function method. The optimizations were performed with the numerical Newton–Raphson method based on the variational principle for the frequency-dependent polarizabilities.Accurate cross-sections...
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