6533b851fe1ef96bd12a8d6f
RESEARCH PRODUCT
Pulse-duration dependence of the isotopic effect in simple molecular ions driven by strong laser fields
Giuseppe CastigliaF. PersicoEmilio FiordilinoPietro Paolo Corsosubject
Physicslaser-matter interactionSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciPulse durationshort pulsesLaserElectromagnetic radiationMolecular physics; laser-matter interaction; short pulsesAtomic and Molecular Physics and OpticsSpectral lineSettore FIS/03 - Fisica Della Materialaw.inventionIonlawKinetic isotope effectHigh harmonic generationMolecular physicEmission spectrumAtomic physicsdescription
In this paper we discuss isotopic effects in simple molecular ions subjected to strong laser fields. We show that the intensity of the emitted spectra strongly depends upon both the nuclear mass of the molecular ions and the laser pulse duration. In particular, for short pulse duration [up to 8 optical cycles (o.c.)], we confirm the trend described in the most studied case in which the high-order harmonic generation is more efficient for heavier isotopes; in contrast, an interesting physical phenomenon is predicted for pulses longer than 16 o.c. characterized by an inverse effect in which lighter molecular species are responsible for higher-order harmonic emission.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-05-23 |