Spectra of Ne K<sub>α</sub>X-ray satellites and hypersatellites excited by 1.2-1.4 MeV amu<sup>-1</sup>He, C, Mg and Ar ions

Watson, R. L.; Benka, O.; Parthasaradhi, K.; Maurer, R.J.; Sanders, J. M.

doi:10.1088/0022-3700/16/5/015

Cited by 35 publications

(12 citation statements)

References 25 publications

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“…The RCI configuration average energies are in excellent agreement with the experimental energies of Bayer et al [1] and Watson et al [2] with an average difference of 0.2 eV. Due to the overlapping nature of the spectral lines, unique assignment to experimental energies becomes difficult in one or two cases.…”

Section: Resultssupporting

confidence: 82%

“…In the evaluation of T r , we have included the rates of all allowed transitions. We have also listed in these tables the other available experimental and theoretical group transition energies and rates [1][2][3]8].…”

Section: Resultsmentioning

confidence: 99%

“…The complexities of the x-ray and Auger spectra depend on the initial multiple vacancy states and also on the numerous possible transitions. The radiative de-excitation of neon with K plus L shell ionization produced in ion-atom collision experiments has been studied by workers in the past [1,2]. Theoretical calculations on x-rays [1][2][3][4] and Auger electrons [3,4] of neon arising from an empty K shell and multiply ionized L shell are also available in literature.…”

Section: Introductionmentioning

confidence: 99%

“…The radiative de-excitation of neon with K plus L shell ionization produced in ion-atom collision experiments has been studied by workers in the past [1,2]. Theoretical calculations on x-rays [1][2][3][4] and Auger electrons [3,4] of neon arising from an empty K shell and multiply ionized L shell are also available in literature. The KK-KLL Auger spectrum from 2s 2 2p 6 configuration has been observed in electron [5,6] and photon [7] excitation experiments.…”

Section: Introductionmentioning

confidence: 99%

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Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Utsunomiya¹

1995

Jpn. J. Appl. Phys.

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Fully relativistic calculations on the energies and electric dipole rates of x-ray multiplets arising from states of 2p q , 2s2p q and 2s 2 2p q configurations of variously ionized neon with q ranging from 6 to 1 have been performed. The calculations have been carried out using multi-configuration Dirac-Fock wavefunctions with the inclusion of Breit interaction, quantum electrodynamics contributions and finite nuclear mass and size corrections. An attempt has been made to take into account the dominant contributions to correlation effects. Using a scaling procedure on the already available relativistic radial matrix elements for a single vacancy in the K shell, the Auger rates have been calculated. The numerical results for the x-ray and Auger transitions of double vacancy states of neon ionized to different degrees in the L shell have been compared with other available theoretical and experimental values. Due to the influence of both relativity and configuration interaction, the configuration average x-ray rates obtained from individual multiplet rates were seen to substantially differ from non-relativistic rates for many transitions.

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Utsunomiya¹

1995

Jpn. J. Appl. Phys.

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“…Absorption spectroscopy of inner shell transitions has been used in laserproduced plasma experiments to diagnose pusher conditions in inertial confinement fusion (ICF) target implosions (Hauer et al 1986), to determine temperatures and densities in layered targets (Chenais-Popovics et al 1989;Bruneau et al 1990), and to measure opacities (Foster et al 1991;Perry et al 1991;Springer et al 1992). K a emission lines have been observed in several types of experiments, including high-temperature Tokamak plasmas (Beiersdorfer et al 1993) and beam-target interactions (Knudson et al 1971;Watson et al 1983). K a emission spectroscopy has also recently been shown to be an important diagnostic technique in plasmas created by intense light ion beams (Bailey etal.…”

Section: Introductionmentioning

confidence: 99%

Plasma diagnostics using K_α satellite emission spectroscopy in light ion beam fusion experiments

et al. 1995

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K a satellite spectroscopy can be a valuable technique for diagnosing conditions in high energy density plasmas. K a emission lines are produced in intense light ion beam plasma interaction experiments as 2p electrons fill partially open Is shells created by the ion beam. In this paper, we present results from collisional-radiative equilibrium (CRE) calculations which show how K a emission spectroscopy can be used to determine target plasma conditions in intense lithium beam experiments on Particle Beam Fusion Accelerator-II (PBFA-II) at Sandia National Laboratories. In these experiments, 8-10 MeV lithium beams with intensities of 1-2 TW/cm 2 irradiate planar multilayer targets containing a thin Al tracer. K a emission spectra are measured using an X-ray crystal spectrometer with a resolution of X/AX = 1200. The spectra are analyzed using a CRE model in which multilevel (N L ~ 10 3 ) statistical equilibrium equations are solved self-consistently with the radiation field and beam properties to determine atomic level populations. Atomic level-dependent fluorescence yields and ion-impact ionization cross sections are used in computing the emission spectra. We present results showing the sensitivity of the K a emission spectrum to temperature and density of the Al tracer. We also discuss the dependence of measured spectra on the X-ray crystal spectral resolution, and how additional diagnostic information could be obtained using multiple tracers of similar atomic number.

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Satellites, hypersatellites and RAE from Ti, V, Cr, Mn and Fe in photoionisation

et al. 2008

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K x-ray satellites, hypersatellites and lines due to radiative Auger effect (RAE) of Ti, V, Cr, Mn and Fe were measured after exciting the samples with Ag bremsstrahlung at 35 kV. All the lines were measured with the 'Spectroscan VY' spectrometer of Spectron -OPTEL, Russia, in which a curved LiF(200) crystal was used. The spectra were deconvoluted using Voigt functions, and the peak positions of the satellites and hypersatellites were determined with errors of ±(1-5) eV. The energy shifts of the satellite lines with respect to their parent lines were also obtained. Multi-configuration Dirac-Fock (MCDF) calculations with the inclusion of higher-order corrections were carried out to predict the peak positions of the satellite and hypersatellite lines. Our data were then compared with our own calculated values and also with the data of others. Our measured energy shifts for K a L 1 , K a L 2 , K a h and K b L 1 , when compared with our MCDF calculations, show a maximum deviation of 8, 12, 2 and 20% respectively.X-ray spectrum of Ti, V, Cr, Mn and Fe in photoionisation 589 CONCLUSIONS K satellites of Ti, V, Cr, Mn and Fe as well as hypersatellites of V, Cr and Fe were measured with a LiF(200) crystal by exciting the foils with x-ray tube bremsstrahlung. The peak positions of the lines are shown in Tables 1-5. MCDF calculation were carried out to predict the peak positions of these lines. Our data were compared with the data of others

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Spectra of Ne K_αX-ray satellites and hypersatellites excited by 1.2-1.4 MeV amu^-1He, C, Mg and Ar ions

Cited by 35 publications

References 25 publications

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Plasma diagnostics using K_α satellite emission spectroscopy in light ion beam fusion experiments

Satellites, hypersatellites and RAE from Ti, V, Cr, Mn and Fe in photoionisation

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Spectra of Ne KαX-ray satellites and hypersatellites excited by 1.2-1.4 MeV amu-1He, C, Mg and Ar ions

Cited by 35 publications

References 25 publications

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O3 Ceramics

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O3 Ceramics

Plasma diagnostics using Kα satellite emission spectroscopy in light ion beam fusion experiments

Satellites, hypersatellites and RAE from Ti, V, Cr, Mn and Fe in photoionisation

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Spectra of Ne K_αX-ray satellites and hypersatellites excited by 1.2-1.4 MeV amu^-1He, C, Mg and Ar ions

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Grating-Type Optical Deflector Using (Pb, La)(Zr, Ti)O₃ Ceramics

Plasma diagnostics using K_α satellite emission spectroscopy in light ion beam fusion experiments