Strong field ionization to multiple electronic states in water

Abstract

High harmonic spectra show that laser-induced strong field ionization of water has a significant contribution from an inner-valence orbital. Our experiment uses the ratio of H2O and D2O high harmonic yields to isolate the characteristic nuclear motion of the molecular ionic states. The nuclear motion initiated via ionization of the highest occupied molecular orbital (HOMO) is small and is expected to lead to similar harmonic yields for the two isotopes. In contrast, ionization of the second least bound orbital (HOMO-1) exhibits itself via a strong bending motion which creates a significant isotope effect. We elaborate on this interpretation by simulating strong field ionization and high harmonic generation from the water isotopes using the time-dependent Schrödinger equation. We expect that this isotope marking scheme for probing excited ionic states in strong field processes can be generalized to other molecules.

References in corpus (3)

• Alignment-Dependent Ionization of N${}_2$, O${}_2$, and CO${}_2$ in Intense Laser Fields
• Quantum state-resolved probing of strong-field-ionized xenon atoms using femtosecond high-order harmonic transient absorption spectroscopy
• Influence of Phase Matching on the Cooper Minimum in Ar High Harmonic Spectra

Cited by in corpus (18)

• Attosecond probing of nuclear dynamics with trajectory-resolved high-harmonic spectroscopy
• Time delay in the recoiling valence-photoemission of Ar endohedrally confined in C${}_{60}$
• Field-Induced Tunneling Ionization and Terahertz-Driven Electron Dynamics in Liquid Water
• Ionization behavior of molecular hydrogen in intense laser fields: Influence of molecular vibration and alignment
• Imaging an isolated water molecule using a single electron wave packet
• Full-dimensional treatment of short-time vibronic dynamics in molecular high-harmonics generation process in methane
• Geometric Dependence of Strong Field Enhanced Ionization in D${}_2$O
• Coherence from multiorbital tunneling ionization of molecules
• Imaging of the umbrella motion and tunneling in the ammonia molecule by strong-field ionization
• Field-Induced Electron Generation in Water: Solvation Dynamics and Many-Body Interactions
• Momentum transfers in correlation-assisted tunnelling
• Correlated dynamics of the motion of proton-hole wave-packets in a photoionized water cluster
• Ionisation of H${}_2$O by a strong ultrashort XUV pulse: a model within the single active electron approximation
• Stark resonance parameters for the $3a_1$ orbital of the water molecule
• Calculation of Stark resonance parameters for valence orbitals of the water molecule
• Attosecond Molecular Spectroscopy and Dynamics
• Extreme ultraviolet spectrometer based on a transmission electron microscopy grid
• Nonadiabatic theory for subcycle ionic dynamics in multielectron tunneling ionization