Abstract
A kinematically complete experiment on two-photon double ionization of Ar by free-electron laser radiation with a photon energy of 27.93 eV was performed. The electron energy spectra show that double ionization is dominated by the sequential process. Comparison of the electron angular distributions to our data for single ionization and to theory confirms that even in the sequential process the electrons from both ionization steps are correlated with each other through polarization of the intermediate Ar+ state. Furthermore, a very important role of autoionization in both ionization steps is found.
Recommended Citation
S. Augustin and M. Schulz and G. Schmid and K. Schnorr and E. V. Gryzlova and H. Lindenblatt and S. Meister and Y. F. Liu and F. Trost and L. Fechner and A. N. Grum-Grzhimailo and S. M. Burkov and M. Braune and R. Treusch, "Signatures of Autoionization in the Angular Electron Distribution in Two-Photon Double Ionization of Ar," Physical Review A, vol. 98, no. 3, article no. 033408, American Physical Society, Sep 2018.
The definitive version is available at https://doi.org/10.1103/PhysRevA.98.033408
Department(s)
Physics
International Standard Serial Number (ISSN)
2469-9934; 2469-9926
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
17 Sep 2018
Comments
National Science Foundation, Grant 1703109