Auger-like correlations in the two-photon above threshold ionization of Ar
- 23 Downloads
The two-photon above-threshold 3p-ionization of argon for the photon energies exceeding the 3p-ionization threshold is studied using the correlation function technique. Generalized two-photon ionization cross sections were calculated taking into account many-electron correlations. The calculations demonstrate that the two-photon ionization of Ar at the 3p4 threshold is almost entirely a collective process. The decisive contribution in the above-threshold two-photon 3p-ionization at the exciting-photon energies corresponding to the 3p→εd giant resonance comes from the Auger-like many-electron correlations of ε′ dε″d − 3pεf type.
- 14.F. Herman, S. Skillman, Atomic Structure Calculations (N.J., Prentice-Hall, Englewood Cliffs, 1963)Google Scholar
- 15.A. Kramida, Y. Ralchenko, J. Reader, NIST ASD Team, NIST Atomic Spectra Database (version 5.2) [Online] (National Institute of Standards and Technology, Gaithersburg, MD, 2014)Google Scholar
- 16.M. Amusia, N. Cherepkov, Many-electron correlations in scattering processes, in Case Studies in Atomic Physics (North-Holland, Amsterdam 1975), Vol. 5, pp. 49–179.Google Scholar