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Interaction of molecular nitrogen with Free-Electron-Laser radiation

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arxiv 1704.03444 v1 pith:W6L7DYZI submitted 2017-04-11 physics.atom-ph

Interaction of molecular nitrogen with Free-Electron-Laser radiation

classification physics.atom-ph
keywords molecularcontributionequationsatomicaugerfree-electron-laseridentifyinteraction
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We compute molecular continuum orbitals in the single center expansion scheme. We then employ these orbitals to obtain molecular Auger rates and single-photon ionization cross sections to study the interaction of N2 with Free-Electron-Laser (FEL) pulses. The nuclei are kept fixed. We formulate rate equations for the energetically allowed molecular and atomic transitions and we account for dissociation through additional terms in the rate equations. Solving these equations for different parameters of the FEL pulse, allows us to identify the most efficient parameters of the FEL pulse for obtaining the highest contribution of double core hole states (DCH) in the final atomic ion fragments. Finally we identify the contribution of DCH states in the electron spectra and show that the DCH state contribution is more easily identified in the photo-ionization rather than the Auger transitions.

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