Scaling laws in double photoionization

Double-photoionization cross sections are calculated for two-electron targets H-, He, Li+, and O6+ using a correlated and an uncorrelated two-electron continuum wave function (C3 and C2 models, respectively). As the target nuclear charge ZT is increased, the double-photoionization cross section is f...

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Detalles Bibliográficos
Autores principales: Kornberg, M.A., Miraglia, J.E.
Formato: JOUR
Materias:
Approximation theory
Atoms
Electron energy levels
Helium
Hydrogen
Integration
Ions
Lithium
Mathematical models
Oxygen
Photons
Correlated wave function
Fivefold differential cross section
Ground state
Nuclear charge
Scaling laws
Wannier theory
Photoionization
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10502947_v49_n6_p5120_Kornberg
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Double-photoionization cross sections are calculated for two-electron targets H-, He, Li+, and O6+ using a correlated and an uncorrelated two-electron continuum wave function (C3 and C2 models, respectively). As the target nuclear charge ZT is increased, the double-photoionization cross section is found to scale as ZT-4 and the electron energy distribution as ZT-6. Conclusions are extracted about the behavior of the cross sections in the high-energy and threshold regions. The ratio of double to single photoionization scales as ZT-2, as in the case of proton impact. © 1994 The American Physical Society.

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