An analysis Differential Cross Section for Helium Atom Photo Double-Ionization

Abstract

It is becoming increasingly clear how exactly the helium atom fragments completely after absorbing a single photon. In this review, the significant theoretical and experimental developments that have contributed to our comprehension of this basic photo-double-ionization process—particularly with regard to multiple differential cross-sections—are summarized. We discuss how the time-dependent close-coupling method, and the convergent close-coupling method were developed to explore atomic and molecular body dynamics.