Field Ionization of N2 Molecule in Strong Laser Field

Abstract

Abstract: The field-assisted ionization of N₂ molecules in strong laser pulse was investigated. The theoretical ionization probabilities and the apparent ionization efficiencies with different angles are studied. The potential surfaces of N₂⁺ ions along different orientations were calculated by the ab initio method. The predicted ionization probabilities were obtained with the computation of tunneling efficiency by using the transfer matrix method. The probabilities were modified by the laser spatial and temporal corrections. The results agree with the observations in an experiment with a 800 nm and 70 fs laser. The yield dependences of laser intensity and of polarization plane are coincident with the theoretical predictions.

Key words: Strong laser field, Ionization, N₂

CLC Number:

O641

TrendMD:

GAO Li-Rong, WANG Wei, WANG Su-Fan, KONG Fan-Ao . Field Ionization of N₂ Molecule in Strong Laser Field[J]. Chem. J. Chinese Universities, 2004, 25(1): 112.

References

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Field Ionization of N₂ Molecule in Strong Laser Field

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