Dissociative tunnel ionization of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>in an intense mid-ir laser field

Ilkov, F A; Walsh, T D G; Turgeon, Sylvie L.; Chin, S. L.

doi:10.1103/physreva.51.r2695

Cited by 37 publications

(23 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2,3,5 For the lightest H 2 molecule, only two ionization steps are involved in its complete explosion. In the sequential mechanism proposed for this molecule, which has recently been studied experimentally under excitation by an intense IR laser pulse, 6 the observed fragments are thought to be created by the Coulomb explosion occurring at a large internuclear distance ͑step 3 in Fig. 1͒.…”

Section: Dynamical Quenching Of Field-induced Dissociation Of H 2 ؉ Imentioning

confidence: 99%

Dynamical quenching of field-induced dissociation of H2+ in intense infrared lasers

Châteauneuf

Nguyen‐Dang

Ouellet

et al. 1998

The Journal of Chemical Physics

View full text Add to dashboard Cite

The dynamics of dissociation of the hydrogen molecular ion H 2 ϩ in an intense infrared ͑IR͒ field is studied by a series of wave packet simulations. In these simulations, the molecular ion is assumed to be instantly prepared at the initial time by a sudden ionization of the ground-state H 2 parent molecule, and a variety of frequency and intensity conditions of the laser field are considered. A new stabilization mechanism, called dynamical dissociation quenching, is found operative in the IR spectral range. In a time-resolved picture, this effect is shown to arise when a proper synchronization between the molecular motions and the laser field oscillations is ensured. In the Floquet, dressed molecule picture, the effect is related to interferences between the Floquet resonances that are excited initially by the nonadiabatic, sudden preparation of the ion. The Floquet analysis of the wave packets in this low frequency regime reveals important intersystem couplings between Floquet blocks, reflecting the highly multiphoton character of the dynamics.

show abstract

Section: Dynamical Quenching Of Field-induced Dissociation Of H 2 ؉ Imentioning

confidence: 99%

Dynamical quenching of field-induced dissociation of H2+ in intense infrared lasers

Châteauneuf

Nguyen‐Dang

Ouellet

et al. 1998

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…The interaction of strong laser fields with molecules, about 2 decade's an active area of research already, forms a subject of exploration up till the present [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. When the intensity of a laser beam approaches around 10 14 W/cm 2 , the strength of its electric field is comparable to that experienced by the molecular valence electrons.…”

Section: Introductionmentioning

confidence: 99%

“…When the intensity of a laser beam approaches around 10 14 W/cm 2 , the strength of its electric field is comparable to that experienced by the molecular valence electrons. This gives rise to interesting phenomena, such as multi photon ionization (MPI), dissociative ionization (DI) [1][2][3][4], field ionization [5,8], Coulomb explosion (CE) [6,7,[9][10][11], field assisted dissociation and electron re-scattering [12][13][14]. It is a challenging task to unify the mechanism that lead to these phenomena.…”

Section: Introductionmentioning

confidence: 99%

Dissociative ionization and Coulomb explosion of CH3I in intense femto second laser fields

Zhang

Luo

et al. 2017

Eur. Phys. J. D

View full text Add to dashboard Cite

Abstract. The interaction of CH3I molecules with 100 fs 800 nm linearly polarized laser fields has been investigated at the intensity region from 2.6 × 10 14 to 5.8 × 10 14 W/cm 2 by means of a velocity map imaging method. The kinetic energy distribution of the various atomic fragment ions I q+ (q = 1−3) has been measured and reproduced by a fit of multiple Gaussian functions. Several dissociative ionization and Coulomb explosion channels were identified for I q+ (q = 1−3). As expected for a geometric alignment dominated interaction process the anisotropic angular recoil distributions of the atomic ion fragments are peaked in the laser polarization direction. The kinetic energy release (KER) of I q+ (q = 1−3) depending upon the laser intensity has been investigated. The relative weight of the various contributions from the identified dissociative ionization (DI) and Coulomb explosion (CE) channels is found to depend strongly on the laser intensity.

show abstract

“…In addition, chemical bonds can be broken in all types of molecules even within a single laser shot. The interaction between such strong laser fields and molecules attracts [1][2][3][4] and continues to attract considerable interest [5][6][7][8]. The effects of the electric field present in intense light fields on molecules results in several phenomena, amongst which, are the bond softening [2], above threshold dissociation (ATD) [7], vibrational trapping [3], molecular * Tel.…”

Section: Introductionmentioning

confidence: 99%

“…E-mail addresses: elshakre@gmail.com, elshakr@yahoo.com alignment [9][10][11][12], dissociative ionization [5][6][7][8], and Coulomb explosion [13][14][15][16]. Most of the experimental investigations are performed for the dissociation of molecules at the laser intensities higher than 10 14 W/cm 2 [2,[13][14][15][16][17][18], where the results were interpreted in terms of the widely accepted Coulomb explosion mechanism.…”

Section: Introductionmentioning

confidence: 99%

The dissociative ionization of CO2 in the 800nm intense laser field using time-of-flight (TOF) mass spectrometry

Elshakre

2013

International Journal of Mass Spectrometry

View full text Add to dashboard Cite

Dissociative tunnel ionization ofH2in an intense mid-ir laser field

Cited by 37 publications

References 10 publications

Dynamical quenching of field-induced dissociation of H2+ in intense infrared lasers

Dynamical quenching of field-induced dissociation of H2+ in intense infrared lasers

Dissociative ionization and Coulomb explosion of CH3I in intense femto second laser fields

The dissociative ionization of CO2 in the 800nm intense laser field using time-of-flight (TOF) mass spectrometry

Contact Info

Product

Resources

About