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          Institute: MPI für Kernphysik     Collection: Physics with Ultrashort Laser Pulses     Display Documents

ID: 269287.0, MPI für Kernphysik / Physics with Ultrashort Laser Pulses
Evidence for rescattering in intense, femtosecond laser interactions with a negative ion
Authors:Pedregosa-Gutierrez, J.; Orr, P. A.; Greenwood, J. B.; Murphy, A.; Costello, J. T.; Zrost, K.; Ergler, T.; Moshammer, R.; Ullrich, J.
Date of Publication (YYYY-MM-DD):2004-11-22
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Issue / Number:22
Start Page:1
End Page:4
Sequence Number of Article:223001
Copyright:©2004 The American Physical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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.
Classification / Thesaurus:32.80.Gc, 32.80.Rm, 34.80.Dp
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group J. Ullrich/Strong-Fields Physics (R. Moshammer)
External Affiliations:International Research Centre for Experimental Physics (IRCEP) and School of Maths and Physics, Queen's University Belfast, BT7 1NN, United Kingdom
National Centre for Plasma Science and Technology (NCPST) and School of Physical Sciences, Dublin City University, Dublin, Ireland
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