Space-resolved x-ray emission from the densest part of laser plasmas: Molecular satellite features and asymmetrical wings

Leboucher-Dalimier, E.; Poquérusse, A.; Angelo, P.

doi:10.1103/physreve.47.r1467

Cited by 23 publications

(12 citation statements)

References 10 publications

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“…However, the proportionality constants in expressions (12) and (14) differ. The expression (14) is derived in the appendix.…”

Section: Mixing Produced By All the Surrounding Ions: MD Simulationsmentioning

confidence: 99%

“…However, the proportionality constants in expressions (12) and (14) differ. The expression (14) is derived in the appendix. Note that, although both the distribution P α (η) and the distributionP α (η) have a peak at η → 1, the probability distribution P(α) of the angle α (where cos α = η) has no peak at α → 0.…”

Section: Mixing Produced By All the Surrounding Ions: MD Simulationsmentioning

confidence: 99%

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Plasma effect on tunnelling, charge transfer and transient quasimolecular states

Fisher¹

2003

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

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The influence of a dense plasma environment on electron tunnelling between two ion potential wells in collectivized states and in charge-transfer collisions is studied. We show that the tunnelling probabilities in dilute plasma (in a close ion-ion collision) and in dense plasma differ strongly. The difference is due to the mixing between Stark components of donor-ion energy levels, caused by the field of spectator ions in a dense plasma. The mixing is determined by an angle α between the nearest-neighbour ion field and the total electric field acting on the donor ion. In close ion-ion binary collisions the mixing may be considered weak. However, for most plasma ions charge transfer, electron state collectivization and transient quasimolecule formation are strongly affected by the field of spectator ions. We derive approximate analytical expressions for the distribution function of α in an ideal plasma and perform molecular dynamics simulations to find the distribution function of α in both ideal and nonideal plasmas. Both α-dependent and average mixing coefficients are determined. We have found that the mixing is strong, even in ideal plasmas, and increases further with an increase in plasma nonideality. It is shown that there is no resonant charge transfer in dense plasmas. The applicability of a transient 'dicenter' quasimolecule model for dense plasmas is discussed.

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“…However, the proportionality constants in expressions (12) and (14) differ. The expression (14) is derived in the appendix.…”

Section: Mixing Produced By All the Surrounding Ions: MD Simulationsmentioning

confidence: 99%

Section: Mixing Produced By All the Surrounding Ions: MD Simulationsmentioning

confidence: 99%

Plasma effect on tunnelling, charge transfer and transient quasimolecular states

Fisher¹

2003

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

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“…Laserplasma interaction processes including nonlinear interaction phenomena in the underdense region, such as filamentation or self-focusing, two-plasmon decay instability or any other mechanism which affects the electron distribution function significantly, can be studied by X-ray spectroscopy with spatial resolution. Further, spatially resolved spectra can be used to study strongly correlated plasmas of high densitỹ Leboucher-Dalimier et al, 1993! or the gain region for X-ray lasers~Nantel et al, 1996!.…”

Section: Introductionmentioning

confidence: 99%

Line spectroscopy with spatial resolution of laser–plasma X-ray emission

Labate

Galimberti

Giulietti³

et al. 2001

Laser Part. Beams

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High dynamic range, space-resolved X-ray spectra of an aluminum laser–plasma in the 5.5–8 Å range were obtained using a TlAP crystal and a cooled CCD camera as a detector. This technique was used to investigate the emission region in the longitudinal direction over a distance of approximately 350 μm from the solid target surface. These data show that the electron density profile varies by two orders of magnitude with the temperature ranging from about 180 eV in the overdense region to about 650 eV in the underdense region. Accordingly, different equilibria take place across the explored region which can be identified with this experimental technique. Detailed studies on highly ionized atomic species in different plasma conditions can therefore be performed simultaneously under controlled conditions.

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“…1993;Leboucher-Dalimier et al 1993) will soon allow systematic detailed comparisons of the experimental spectral lines with the newly developed line shape models (Calisti et al 1994;Mancini et al 1994). The plasma densities obtained in laser-driven implosion, inertial confinement fusion (ICF) experiments, or short-pulse laser created plasmas are often high enough to significantly broaden with Stark effect the spectral lines emitted.…”

Section: Introductionmentioning

confidence: 99%

Model for the Stark broadening of plasmas created by laser interaction with matter

Calisti¹,

Godbert²,

Meftah³

et al. 1994

Laser Part. Beams

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A model for the Stark broadening of ions in a high-density plasma created by laser has been developed by taking account of the full effect of a two-component plasma. One of the objectives of the work was to include the effect of ion dynamics in an efficient way. This has been achieved by using a stochastic process for mixing the different components that constitute a line profile. With the systematic use of fast algorithms, a code has been developed with the ability of treating complex atomic structures.

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Space-resolved x-ray emission from the densest part of laser plasmas: Molecular satellite features and asymmetrical wings

Cited by 23 publications

References 10 publications

Plasma effect on tunnelling, charge transfer and transient quasimolecular states

Plasma effect on tunnelling, charge transfer and transient quasimolecular states

Line spectroscopy with spatial resolution of laser–plasma X-ray emission

Model for the Stark broadening of plasmas created by laser interaction with matter

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