Related papers: Theoretical investigation of the Freeman resonance in the dissociative ionization of $H

Theoretical investigation of the Freeman resonance in the dissociative ionization of $H_2+$

URL: http://arxiv.org/abs/2008.09528v4
Date: Mon, 25 Jan 2021 16:17:50 GMT
Title: Theoretical investigation of the Freeman resonance in the dissociative ionization of $H_2+$
Authors: Jinzhen Zhu
Abstract summary: The dissociative ionization of $H+$ in linearly polarized, 400 nm laser pulses is simulated by solving a three-particle time-dependent Schr"odinger equation in full dimensionality. The analysis of the wavefunction for electrons and protons after the pulse are presented, where we find $U_p$ is absorbed by the Freeman resonances between two excited ungerade states.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The dissociative ionization of $H_2^+$ in linearly polarized, 400 nm laser pulses is simulated by solving a three-particle time-dependent Schr\"odinger equation in full dimensionality. The joint energy spectra (JES) are computed for $\cos^8$ and flat-top envelopes using the time-dependent surface flux (tSurff) methods. In JES, the energy sharing $n$ photon energies $\omega$ of nuclear kinetic energy release (KER) $E_N$ and electronic KER $E_e$ are well represented by $E_N+E_e=n\omega-U_p+E_0$ for $\cos^8$ pulses, but satisfy $E_N+E_e=n\omega+E_0$ for flat-top envelope, exposing a deviation of the ponderomotive energy $U_p$, which has been observed in experiments, where $E_0$ is the ground energy of $H_2^+$. The analysis of the wavefunction for electrons and protons after the pulse are presented, where we find $U_p$ is absorbed by the Freeman resonances between two excited ungerade states.

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