Strong-field double ionization of He-like systems: The case of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">In</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>ions

Maeda, Hidekatsu; Dammasch, M.; Eichmann, U.; Sandner, W.

doi:10.1103/physreva.63.025401

Cited by 9 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The system of equations (2) has already been solved by many authors (see [20][21][22][24][25][26] and references therein) for different atomic species and within a wide range of laser parameters. Particularly worth noting is the semianalytical 033401-2 approach developed in [21], based on the following formal solution of Eqs.…”

Section: A Rate Equationsmentioning

confidence: 99%

“…The aforementioned solutions of rate equations were obtained for Gaussian [22,24], Lorentzian [25,26], and hyperbolic-secant [21] pulse envelopes. To the best of our knowledge, the oscillations of the laser field have not been taken into account for solving Eqs.…”

Section: A Rate Equationsmentioning

confidence: 99%

“…Consequently, most studies have focused on the latter ionization mechanism and there is, in fact, a lack of theoretical studies of sequential multiple ionization. Although the sequential ion yield was calculated by many groups (see [20][21][22][23][24][25][26][27] and references therein), emphasis has been put on the derivation of empirical formulas, which can describe the well-known "knee" in the ion yield, caused by the presence of the nonsequential channel. The aforementioned lack of relevant theory becomes particularly evident in the case of momentum distributions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Momentum distributions of sequential ionization generated by an intense laser pulse

et al. 2011

View full text Add to dashboard Cite

The relative yield and momentum distributions of all multiply charged atomic ions generated by a short (30 fs) intense (10 14 -5 × 10 18 W/cm 2 ) laser pulse are investigated using a Monte Carlo simulation. We predict a substantial shift in the maximum (centroid) of the ion-momentum distribution along the laser polarization as a function of the absolute phase. This effect should be experimentally detectable with currently available laser systems even for relatively long pulses, such as 25-30 fs. In addition to the numerical results, we present semianalytical scaling for the position of the maximum.

show abstract

Section: A Rate Equationsmentioning

confidence: 99%

Section: A Rate Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Momentum distributions of sequential ionization generated by an intense laser pulse

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Our apparatus has recently been used to yield new and unambiguous insights into the fragmentation dynamics of H 1 2 in a strong laser field [2]. A previous attempt to study the interaction of atomic ions in intense laser fields used in fact neutral targets, but assumed that the ions were formed well before the laser pulse reached its maximum [24].In this paper we report on the first direct studies of strong field ionization of a positive atomic ion. Since the ion source used to produce the ions also generates long lived excited states, we have been able to study ionization from both the ground state and metastable states.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Suppression of Multiple Ionization of Atomic Ions in Intense Ultrafast Laser Pulses

Greenwood

Johnston²,

McKenna³

et al. 2002

Phys. Rev. Lett.

View full text Add to dashboard Cite

The interaction of an intense laser field with a beam of atomic ions has been investigated experimentally for the first time. The ionization dynamics of Ar 1 ions and Ar neutrals in a 60 fs, 790 nm laser pulse have been compared and contrasted at intensities up to 10 16 W cm 22 . Our results show that nonsequential ionization from an Ar 1 target is strongly suppressed compared with that from the corresponding neutral target. We have also observed for the first time the strong field ionization of high lying target metastable levels in the Ar 1 beam. DOI: 10.1103/PhysRevLett.88.233001 PACS numbers: 32.80.Fb There is considerable current interest in the interaction of high intensity ͑10 13 10 18 W cm 22 ͒ radiation with dilute matter, where the external electric field strength becomes comparable to molecular bond and valance electron binding strengths. Studies have been carried out with targets of atoms, molecules, clusters [1], and most recently molecular ions [2,3], in order to elucidate the new physics observable in this highly nonlinear regime. These include the study of high harmonic generation [4], strong field effects in molecular dissociation, and the enhancement of multiple ionization in atoms [5,6]. Work is currently underway to generate attosecond pulses through harmonic generation [7,8], and coherent x-ray generation could be possible for highly charged ions in the presence of superintense fields [9,10].Both experiment and theory have shown that, in femtosecond laser pulses, multiple ionization of atoms is enhanced by nonsequential processes [5,6,11,12]. The physical model which best describes the observed behavior is known as the "atomic antenna" [13] or "recollision" [14,15] model. In this picture the first electron is removed from the atom by tunneling through the barrier created by interaction of the external field with the atomic potential. This electron is then accelerated in the external field and, depending on the initial phase, can return to the singly charged ion with energies up to 3.17U P [6], where U P is the classical ponderomotive energy in the field. Multiple ionization is thus via electron interaction with the ionic core. Evidence for this mechanism includes large reductions in nonsequential ionization rates for circularly polarized fields and more recently from the momentum distribution of the recoil ions [16,17], and coincidence measurements between ions and ejected electrons [18]. However, it has proved difficult to predict quantitative yields for the product ions without using large-scale calculations through the S-matrix approach [19] or by obtaining a time-dependent solution of the Schrödinger equation [20].By including the effects of excitation from the recollision followed by tunneling [21] and taking into account the Coulomb focusing on the active electron [22], better agreement with experiment has been obtained. The importance of multiple returns to the core has been demonstrated experimentally by a reduction in nonsequential ionization when few cycle pulses are used [23]....

show abstract

Intense Laser–Atom Interaction

Mulser

Bauer

2010

Springer Tracts in Modern Physics

View full text Add to dashboard Cite

Strong-field double ionization of He-like systems: The case ofIn+ions

Cited by 9 publications

References 16 publications

Momentum distributions of sequential ionization generated by an intense laser pulse

Momentum distributions of sequential ionization generated by an intense laser pulse

Suppression of Multiple Ionization of Atomic Ions in Intense Ultrafast Laser Pulses

Intense Laser–Atom Interaction

Contact Info

Product

Resources

About