Interaction of atomic and molecular systems with high-intensity ultraviolet radiation

Boyer, K.; Egger, H.; Luk, Ting Shan; Pummer, H.; Rhodes, C. K.

doi:10.1364/josab.1.000003

Cited by 64 publications

(13 citation statements)

References 28 publications

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“…Recent multiply-charged ion spectra obtained by the Saclay [2] and the Chicago [3,4] groups using lasers with peak powers above 10 11 W/cm 2 indicated such high energy absorption that the LOPT result in Equation (1) appeared to be useless for their interpretation. As shown in Figure 3 for xenon, the removal of the six outer 5p electrons occurs with high probability.…”

Section: Interpretation Of Mpi Multiply-charged Ion Spectramentioning

confidence: 99%

“…Recent experiments on multiphoton ionization (MPI) [1] of rare gases and alkaline earth atoms have revealed unexpectedly intense production of multiply-charged ions by strong laser fields [2][3][4][5][6][7][8]. All of the experiments for xenon atoms, for example, observe the production of at least Xe 3+ ions, and one group [3,4] has observed the ions up to Xe 8+ .…”

Section: Introductionmentioning

confidence: 99%

“…All of the experiments for xenon atoms, for example, observe the production of at least Xe 3+ ions, and one group [3,4] has observed the ions up to Xe 8+ . These results have been obtained with laser intensities in the range from 10 12 W/cm 2 to 10 15 W/cm 2 and photon energies in the range from 0.1 eV to more than 6eV.…”

Section: Introductionmentioning

confidence: 99%

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Electron Correlation Effects in Nonresonant Multiphoton Ionization Processes

Starace¹

1987

Phys. Scr.

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The role of electron correlations in nonresonant multiphoton processes of atoms is presented. The evidence for the validity of a lowest order perturbation theory (LOPT) approach for the laser field in the case of nonresonant processes is sketched. The growing consensus for a LOPT interpretation of even the multiply-charged ion spectra obtained with high intensity lasers is reviewed. Finally, a review of those specific electron correlation processes within LOPT that are important for the quantitative prediction of two-photon ionization cross sections is presented and some of their effects on calculated generalized cross sections are exhibited.

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Section: Interpretation Of Mpi Multiply-charged Ion Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electron Correlation Effects in Nonresonant Multiphoton Ionization Processes

Starace¹

1987

Phys. Scr.

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“…An increasing volume of data relative to the production of charge states of several atoms is available over a wide range of photon energies, for pulse widths ranging from nanoseconds to picoseconds. The Saclay group [1] and Rhodes and co-workers [2][3][4] have detected the presence of Xe ions with charge up to q = 8. The motivation for these studies is that the highly charged ions appear somewhat more readily than expected on the basis of the increasing number of photons needed to ionize the higher charge states.…”

Section: -Introductionmentioning

confidence: 99%

Independent electron theory of multiple ionization of xenon by intense laser pulses

et al. 1991

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Summary. --The intensity dependence of the multiphoton ionization spectra of Xe atoms has been investigated with an improved accuracy and well-controlled laser parameters. In particular, we have examined the ionization rates for X 3+, X 2-, X + as functions of the laser intensity and the pressure in the target chamber. The apparatus used for these measurements is characterized by a high-energy resolution (better than 200meV) and a completely digital acquisition system. The time-of-flight spectra clearly show the contributions of the different isotopes present in Xe gas. The laser pulses have been characterized with great accuracy by monitoring the energy, pulse width and divergence shot by shot. The ionization rates of the different ions have been used for testing the basic assumption of the Geltman theory of multiple ionization based on the single electron ionization model. We have found that for the small intensity range investigated the quantity (dXe+/d/) 9 (dXeS+/d/)/(dXe2+/d/) 2 appears to be quite close to the value 0.5 predicted by this model. PACS 32.80.Wr -Other multiphoton processes.

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“…These experiments have been performed over a wide range of laser wavelengths, from 193 nm [2] to 10 p m [3], on different atoms, from He [l] to U [2]. Some of the most spectacular results obtained so far are, for example, the removal of the entire outermost shell of Xe at 193 nm, which means the absorption of -450 eV [2], or the triple ionization of Xe at 10 pm (requiring the absorption of at least 500 photons! (31).…”

Section: Introductionmentioning

confidence: 99%

Multiphoton ionization of many‐electron atoms

L’Huillier

Jönsson

Wendin

1987

Int J of Quantum Chemistry

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We review the main experimental resultssbtained in the multielectron multiphoton ionization of rare gases. Multiple ionization is interpretated as a sequential process. We study the influence of many-electron effects in multiphoton ionization within the framework of the random phase approximation. This is applied to a calculation of the two-photon ionization cross section of xenon. Finally, the role of screening effects in the multiphoton stripping of heavy atoms (Xe) is estimated.

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Interaction of atomic and molecular systems with high-intensity ultraviolet radiation

Cited by 64 publications

References 28 publications

Electron Correlation Effects in Nonresonant Multiphoton Ionization Processes

Electron Correlation Effects in Nonresonant Multiphoton Ionization Processes

Independent electron theory of multiple ionization of xenon by intense laser pulses

Multiphoton ionization of many‐electron atoms

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