Evidence for rescattering in intense, femtosecond laser interactions with a negative ion

J. Pedregosa-Gutierrez, P.A. Orr, Jason Greenwood, A. Murphy, J.T. Costello, K. Zrost, T. Ergler, R. Moshammer, J. Ullrich

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Abstract

It is now well established that energetic electron emission, nonsequential ionization, and high harmonic generation, produced during the interaction of intense, femtosecond laser pulses with atoms (and atomic positive ions), can be explained by invoking rescattering of the active electron in the laser field, the so-called rescattering mechanism. In contrast for negative ions, the role of rescattering has not been established experimentally. By irradiating F- ions with ultrashort laser pulses, F+ ion yields as a function of intensity for both linearly and circularly polarized light have been measured. We find that, at intensities well below saturation for F+ production by sequential ionization, there is a small but significant enhancement in the yield for the case of linearly polarized light, providing the first clear experimental evidence for the existence of the rescattering mechanism in negative ions.
Original languageEnglish
Article number223001
Pages (from-to)223001-1-223001-4
Number of pages4
JournalPhysical Review Letters
Volume93
Issue number22
DOIs
Publication statusPublished - 29 Nov 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Pedregosa-Gutierrez, J., Orr, P. A., Greenwood, J., Murphy, A., Costello, J. T., Zrost, K., Ergler, T., Moshammer, R., & Ullrich, J. (2004). Evidence for rescattering in intense, femtosecond laser interactions with a negative ion. Physical Review Letters, 93(22), 223001-1-223001-4. [223001]. https://doi.org/10.1103/PhysRevLett.93.223001