Molecular frame photoemission in multiphoton ionization of small molecules induced by linearly and circularly polarized light

We report results for one-color multiphoton dissociative ionization (MPDI) of NO2 induced by linearly (P) and circularly (k, ê) polarized femtosecond (fs) pulses centered at 400 nm. The experiments were performed by combining the use of 1 kHz femtosecond laser sources (SLIC, Saclay) and the electron...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 194; no. 3; p. 032043
Main Authors Lucchese, R R, Elkharrat, C, Picard, Y, Billaud, P, Dowek, D
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2009
Subjects
Angular velocity
Circular polarization
Femtosecond pulses
Ionization
Nitrogen dioxide
Photoelectric emission
Photoelectrons
Photoionization
Photon absorption
Photons
Physics
Polarized light
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Summary:We report results for one-color multiphoton dissociative ionization (MPDI) of NO2 induced by linearly (P) and circularly (k, ê) polarized femtosecond (fs) pulses centered at 400 nm. The experiments were performed by combining the use of 1 kHz femtosecond laser sources (SLIC, Saclay) and the electron-ion vector correlation method. The recoil frame photoelectron angular distributions (RFPADs), derived from the analysis of the (Ve, VNO+) velocity vector correlation, are analyzed using a new formalism. It generalizes the expression of the MFPADs for one-photon photoionization of linear molecules, and models the reaction as n−1 bound-to-bound transitions and ionization induced by the nth photon. The polar and azimuthal angle dependences of the RFPAD are characterized. We illustrate the discussion by the RFPADs measured for a MPDI process induced by five-photon absorption.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/194/3/032043