Recoil-ion momentum spectroscopy of multiply charged argon ions produced by intense (∼1016Wcm−2) laser light

Shimada, Hiroko; Nakai, Y.; Oyama, Hitoshi; Ando, Kozo; Kambara, T.; Hatakeyama, A.; Yamazaki, Y.

doi:10.1016/j.nimb.2005.03.177

Cited by 9 publications

(7 citation statements)

References 12 publications

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“…The dipole term −Q j r j • E(r j , t ) of Eq. ( 22) involving the electric field does not appear in Hamiltonian (24). There is no contradiction.…”

Section: Derivation Of the Time Derivative Of The Effective Chargesmentioning

confidence: 93%

“…These studies include classical models with reduced dimensionality [8] and with soft core Coulomb potentials [9][10][11][12][13], reduceddimensionality quantum-mechanical treatments [14][15][16], and semiclassical models with Heisenberg potentials [17]. On the experimental front, several studies have addressed multielectron ionization in strongly driven Ar and Ne [18][19][20][21][22][23][24]. For weak fields, striking angular patterns of three-electron escape and the underlying collision mechanisms were identified with 3D semiclassical models and ab initio quantum-mechanical techniques [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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General model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

2022

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We formulate a three-dimensional semiclassical model to address triple and double ionization in three-electron atoms driven by intense infrared laser pulses. During time propagation, our model fully accounts for the Coulomb singularities, the magnetic field of the laser pulse, and the motion of the nucleus at the same time as for the motion of the three electrons. The framework we develop is general and can account for multielectron ionization in strongly driven atoms with more than three electrons. To avoid unphysical autoionization arising in classical models of three or more electrons, we replace the Coulomb potential between pairs of bound electrons with effective Coulomb potentials. The Coulomb forces between electrons that are not both bound are fully accounted for. We develop a set of criteria to determine when electrons become bound during time propagation. We compare ionization spectra obtained with the model developed here and with the Heisenberg model that includes a potential term restricting an electron from closely approaching the core. Such spectra include the sum of the electron momenta along the direction of the laser field as well as the correlated electron momenta. We also compare these results with experimental ones.

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“…The dipole term −Q j r j • E(r j , t ) of Eq. ( 22) involving the electric field does not appear in Hamiltonian (24). There is no contradiction.…”

Section: Derivation Of the Time Derivative Of The Effective Chargesmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

General model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

2022

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“…For cases when more than two electrons are ionized, the situation is much more obscure. Though intensitydependent ion yields have been measured for all rare gases, only a few differential measurements (recoil-ion momentum distributions for Ar and Ne) have been reported until now for NSMI [9][10][11], as well as for sequential (S) ionization, where several electrons are field ionized independent of each other [12,13]. Theoretically, there is seemingly no realistic prospect for extending QM calculations for the differential observables beyond the two-electron ejection, and the efforts aimed to provide a detailed picture of NSMI have been recently concentrated on the development of classical approaches [4,14,15].…”

mentioning

confidence: 99%

From non-sequential to sequential strong-field multiple ionization: identification of pure and mixed reaction channels

Rudenko¹,

Ergler²,

Zrost³

et al. 2008

J. Phys. B: At. Mol. Opt. Phys.

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Momentum distributions of Ne3–4+ ions created by 795 nm, 25 fs laser pulses have been measured at 1015–2 × 1016 W cm−2 using a ‘reaction microscope’ in order to characterize the transition regime between non-sequential and sequential strong-field ionizations. We can clearly separate pure and/or mixed recollision-induced (e, ne)-like reactions and sequential (field-induced) processes, and observe transition intensities which agree with recently reported ion-yield data. Our results provide consistent qualitative description of Ne strong-field multiple ionization for all non-relativistic intensities.

show abstract

“…The dipole term −Q j r j • E (r j , t) of Eq. ( 22) involving the electric field does not appear in the Hamiltonian (24). There is no contradiction.…”

Section: Derivation Of the Time Derivative Of The Effective Chargesmentioning

confidence: 94%

“…These studies include classical models with reduced-dimensionality [8] and with soft core Coulomb potentials [9][10][11][12][13], reduceddimensionality quantum mechanical treatments [14][15][16] and semi-classical models with Heisenberg potentials [17]. On the experimental front, several studies have addressed multi-electron ionization in strongly-driven Ar and Ne [18][19][20][21][22][23][24]. For weak fields, striking angular patterns of three-electron escape and the underlying collision mechanisms were identified with 3D semi-classical models and ab-initio quantum mechanical techniques [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A general model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

Peters,

Katsoulis,

Emmanouilidou

2022

Preprint

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We formulate a three-dimensional semi-classical model to address triple and double ionization in three-electron atoms driven by intense infrared laser pulses. During time propagation, our model fully accounts for the Coulomb singularities, the magnetic field of the laser pulse and for the motion of the nucleus at the same time as for the motion of the three electrons. The framework we develop is general and can account for multi-electron ionization in strongly-driven atoms with more than three electrons. To avoid unphysical autoionization arising in classical models of three or more electrons, we replace the Coulomb potential between pairs of bound electrons with effective Coulomb potentials. The Coulomb forces between electrons that are not both bound are fully accounted for. We develop a set of criteria to determine when electrons become bound during time propagation. We compare ionization spectra obtained with the model developed here and with the Heisenberg model that includes a potential term restricting an electron from closely approaching the core. Such spectra include the sum of the electron momenta along the direction of the laser field as well as the correlated electron momenta. We also compare these results with experimental ones.

show abstract

Recoil-ion momentum spectroscopy of multiply charged argon ions produced by intense (∼1016Wcm−2) laser light

Cited by 9 publications

References 12 publications

General model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

General model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

From non-sequential to sequential strong-field multiple ionization: identification of pure and mixed reaction channels

A general model and toolkit for the ionization of three or more electrons in strongly driven atoms using an effective Coulomb potential for the interaction between bound electrons

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