Comment on 'Photoionization of helium atoms irradiated with intense vacuum ultraviolet free-electron laser light. Part I. Experimental study of multiphoton and single-photon processes'

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.037401· OSTI ID:20857789

Charalambidis, Dimitrios ^[1]; Tzallas, P; Benis, E P ^[1]; Papadogiannis, N A ^[2]; Nikolopoulos, L A. A. ^[3]; Tsakiris, G D ^[4]

---

1. Foundation for Research and Technology Hellas, Institute of Electronic Structure and Laser, P.O. Box 1527, 71110 Heraklion (Greece)
2. Technological Educational Institution of Crete at Rethymnon, GR-74100, Rethymnon, Crete (Greece)
3. Department of Telecom, Science and Technology, University of Peloponnisos, GR-22100 Tripoli (Greece)
4. Max-Planck-Institut fuer Quantenoptik, D-85748 Garhing (Germany)

The reported observation of two-photon ionization of He by 13 eV photons of the TESLA Facility in T. Laarmann, A. R. B. de Castro, P. Guertler, W. Laasch, J. Schulz, H. Wabnitz, and T. Moeller, Phys. Rev. A72, 023409 (2005) is ambiguous, as it is not supported by the experimental data presented. We discuss the lack of evidence for the claimed two-photon ionization.

• OSTI ID: 20857789
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
EV RANGE
FREE ELECTRON LASERS
HELIUM
IRRADIATION
LASER RADIATION
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
ULTRAVIOLET RADIATION
VISIBLE RADIATION