Electron temperature of optically ionized gases produced by high intensity 268 nm laser radiation

Aa, Offenberger; Blyth, W.; Dangor, E; Djaoui, A.; Key, M. H.; Najmudin, Z.; Wark, J. S.

doi:10.1103/physrevlett.71.3983

Cited by 39 publications

(16 citation statements)

References 9 publications

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“…Subsequently, the utility of TS was also demonstrated in laser-produced plasmas to measure electron temperatures and the characteristics of ion acoustic and electron plasma waves in a large number of studies using open-geometry disk and exploding foil plasmas (e.g., Refs. [33][34][35][36][37][38][39][40]. In experiments at the Nova laser facility we have verified the theoretical TS cross section calculations6*27~28…”

mentioning

confidence: 51%

Thomson scattering from laser plasmas

et al. 1999

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mentioning

confidence: 51%

Thomson scattering from laser plasmas

et al. 1999

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“…Recent Thomson scattering measurements of the electron temperature in optical-field-ionized plasmas confirm this assumption [21,22]. By taking the temporal and spatial average over the laser pulse [12] Fig.…”

Section: Analysis and Mscussignmentioning

confidence: 64%

“…In view of the experimental verification of ATI heating as the mechanism determining the electron temperature in optical-field-ionized helium [21,22], it seems that the first scenario, in which the helium spectra are explained in terms of excitation from the hydrogenic ground state, is the more likely one.…”

Section: Analysis and Mscussignmentioning

confidence: 99%

xuv spectra of optical-field-ionized plasmas

et al. 1995

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High-power Ti:sapphire laser pulses (150 mJ in 150 fs) were focused into a gas jet of He, N2, CQ2, 02, SF6, or Ar emitted from a pulsed nozzle. The xuv spectra that were generated are reported and analyzed. For all gases the spectra show strong lines corresponding to single-electron transitions. This indicates that the applied intensities of up to 5 X 10' %/cm' readily strip the atoms of all outer electrons, with three-body recombination populating excited levels of the next lower ionization stage. Simulations of the plasma evolution after the laser pulse were performed for helium and nitrogen. In the case of helium, good agreement with the experiment can be obtained for specific initial conditions. For nitrogen, mechanisms other than three-body recombination must be invoked to explain the experimental spectra. Gain measurements were made by comparing longitudinal and transverse spectra.

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“…Recombination lasers, however, require relatively high gas density (&10's/cm3) which may result in additional heating mechanisms [5]. Experiments performed at high density [6,7] have generally utilized longer laser pulses than optimal for transient recombination lasers. For example, the measurements of Offenberger et al [6] were performed using 12 ps pulses; inverse bremsstrahlung (IB) dominated the electron heating and thermal conduction significantly modified the measured temperatures.…”

mentioning

confidence: 99%

“…Experiments performed at high density [6,7] have generally utilized longer laser pulses than optimal for transient recombination lasers. For example, the measurements of Offenberger et al [6] were performed using 12 ps pulses; inverse bremsstrahlung (IB) dominated the electron heating and thermal conduction significantly modified the measured temperatures. While the fits to theory on the short wavelength side of the peaks in Fig.…”

mentioning

confidence: 99%