Soft-x-ray spectra of krypton xxiv–xxvii in gas puff Z-pinch plasmas

Stewart, Richard E.; Dietrich, D. D.; Fortner, R. J.; Dukart, R. J.

doi:10.1364/josab.4.000396

Cited by 22 publications

(7 citation statements)

References 20 publications

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“…In some cases lack of observations may cause larger uncertainties. Thus, for the 3s 3 P 2 -3p 3 S 1 line, data above Cu XX [19] only exist for Kr XXVII [17,18] and Br XXVI (present work). We also note that no n 3, Dn 0 line identi¢cations have been made in Co XVIII, Zn XXI, Ga XXII and As XXIV.…”

Section: P 5 3pmentioning

confidence: 43%

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Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

et al. 2000

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We report a study of the 2p 5 3s, 3p and 3d con¢gurations of Ne-like Br XXVI, by means of beam foil spectroscopy. In the region 100^300 Ð more than 20 Br XXVI lines were identi¢ed, 5 of which were known earlier, from X-ray laser work. Experimental energies for the 3s, 3p and 3d levels are compared with results of relativistic Hartree-Fock (HFR) calculations. We also present predicted 3s-3p and 3p-3d wavelengths, obtained by combining the new Br results with data for other Ne-like ions.

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Section: P 5 3pmentioning

confidence: 43%

“…The e¡ective a parameter, which has been used for lower members of the sequence, is less important in Br XXVI and is therefore omitted. [15,16] up to Kr [17,18] the latter being the heaviest ion for which``nonlasing lines'' have been identi¢ed. Other sources of experimental data are Refs.…”

Section: P 5 3pmentioning

confidence: 99%

Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

et al. 2000

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“…A beam-foil study of the 2s 2 2p 5 3s-2s2p 6 3p transitions in Ni 18+ , Cu 19+ and Kr 26+ ions was reported in [32,44]. The neonlike spectrum of Kr 26+ in gas puff Z-pinch plasmas was identified as transitions between 2s 2 2p 5 3s, 2s2p 6 3p and 2s2p 6 3d configurations in [45]. Interpretation of a spectrum of laser irradiated strontium in the range of 115-208 Å (2s 2 2p 5 3s-2s 2 2p 5 3p and 2s 2 2p 5 3p-2s 2 2p 5 3d transitions) was given in [46].…”

Section: Introductionmentioning

confidence: 98%

Relativistic many-body calculations of electric-dipole lifetimes, transition rates and oscillator strengths for 2l⁻¹3l′ states in Ne-like ions

Safronova

Cowan

Safronova

2005

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

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Transition rates, oscillator strengths and line strengths are calculated for electric-dipole (E1) transitions between odd-parity 2s22p53s, 2s22p53d and 2s2p63p states and even-parity 2s22p53p, 2s2p63s and 2s2p63d states in Ne-like ions with the nuclear charges ranging from Z = 14 to 100. Relativistic many-body perturbation theory (RMBPT), including the Breit interaction, is used to evaluate retarded E1 matrix elements in length and velocity forms. The calculations start from a 1s22s22p6 Dirac–Fock potential. First-order RMBPT is used to obtain intermediate coupling coefficients and second-order RMBPT is used to calculate transition matrix elements. Contributions from negative-energy states are included in the second-order E1 matrix elements to ensure the gauge independence of transition amplitudes. Transition energies used in the calculation of oscillator strengths and transition rates are from second-order RMBPT. Lifetimes of the 16 even-parity and 18 odd-parity levels are given for Z = 14–100. Transition rates, line strengths and oscillator strengths are compared with critically evaluated experimental values and with results from other recent calculations. These atomic data are important in the modelling of L-shell radiation spectra of heavy ions generated in electron beam ion trap experiments and in L-shell diagnostics of plasmas.

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“…The hot, dense radiating plasmas produced in high power Z-pinch implosions have a wide variety of applications, ranging from materials testing, x-ray lithography, and microscopy [1] to the spectroscopy of highly charged ions [2,3]. At drive powers of 10 TW and above, a pinch x-ray source can heat materials to black body temperatures of order 100 eV for applications in high energy density physics [4].…”

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confidence: 99%

“…We determine an axially averaged electron density of ͑0.8 6 0.2͒ 3 10 21 cm 23 for the annular gas puff. Assuming this electron density and a plasma consisting of 90% Ne 101 and 10% Ar 161 yields a mass density of 0.0028 6 0.0007 g͞cm 3 .…”

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confidence: 99%

Spectroscopic Characterization of an Argon-NeonZ-Pinch Plasma at Stagnation

et al. 1998

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The density, temperature, and radiation coupling are investigated in strongly radiating Ar-Ne Z-pinch plasmas at stagnation using a novel high resolution space-and time-resolving x-ray spectrometer. Oneand two-dimensional electron temperature profiles are obtained from the slope of the Ne recombination continuum. The electron density and ion temperature are determined from comparisons of the heliumlike Ar Rydberg series with detailed line-profile calculations. 2D nonlocal thermodynamic equilibrium calculations predict a radiating region denser and cooler than measured. [S0031-9007(98)

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Soft-x-ray spectra of krypton xxiv–xxvii in gas puff Z-pinch plasmas

Cited by 22 publications

References 20 publications

Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

Relativistic many-body calculations of electric-dipole lifetimes, transition rates and oscillator strengths for 2l⁻¹3l′ states in Ne-like ions

Spectroscopic Characterization of an Argon-NeonZ-Pinch Plasma at Stagnation

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Soft-x-ray spectra of krypton xxiv–xxvii in gas puff Z-pinch plasmas

Cited by 22 publications

References 20 publications

Analysis of the 2p53s, 3p and 3d Configurations of Ne-like Br XXVI

Analysis of the 2p53s, 3p and 3d Configurations of Ne-like Br XXVI

Relativistic many-body calculations of electric-dipole lifetimes, transition rates and oscillator strengths for 2l−13l′ states in Ne-like ions

Spectroscopic Characterization of an Argon-NeonZ-Pinch Plasma at Stagnation

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Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

Analysis of the 2p⁵3s, 3p and 3d Configurations of Ne-like Br XXVI

Relativistic many-body calculations of electric-dipole lifetimes, transition rates and oscillator strengths for 2l⁻¹3l′ states in Ne-like ions