New Results on Multiphoton Free-Free Transitions

Trombetta, F.; Piraux, Bernard; Ferrante, G.

doi:10.1007/978-1-4613-1061-7_34

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Theory Of Free-free Transitions1

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2010

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“…The plane wave assumption of the electromagnetic wave is quite a restrictive condition for laser radiation since typical lasers have Hermite-Gaussian or more complex spatial intensity structures. Theoretically, several workers have studied free-free transitions under realistic laser irradiation [20][21][22][23][24]. In particular, Zoller [20] considered the extreme condition in which the laser field consists of a large number of uncorrelated spatial modes (chaotic laser) to arrive at the formula…”

Section: Theory Of Free-free Transitionsmentioning

confidence: 99%

Laser-induced free–free transitions in elastic electron scattering from CO₂

Musa

MacDonald²,

Tidswell³

et al. 2010

J. Phys. B: At. Mol. Opt. Phys.

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This paper presents measurements of laser-induced free-free transitions of electrons scattered from CO 2 molecules in the ground electronic state at incident electron energies of 3.8 and 5.8 eV under a pulsed CO 2 laser field. The differential cross section of free-free transitions involving absorption and emission of up to two photons was measured at various scattering angles with the polarization of the laser either parallel with or perpendicular to the momentum change vector of the scattered electrons. The results of the parallel geometry are found to be in qualitative agreement with the predictions of the Kroll-Watson approximation within the experimental uncertainty whereas those of the perpendicular geometry show marked discrepancy with the Kroll-Watson predictions.

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