Field Enhanced Dielectronic Recombination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Si</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mn>1</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Ions

Bartsch, Thomas; Müller, A.; Spies, W.; Linkemann, J.; Danared, H.; DeWitt, D. R.; Gao, Hui; Zong, W.; Schuch, R.; Wolf, A.; Dunn, G. H.; Pindzola, M. S.; Griffin, D. C.

doi:10.1103/physrevlett.79.2233

Cited by 57 publications

(27 citation statements)

References 20 publications

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“…These high resolution experiments revealed discrepancies with earlier calculations for Si 11+ (Bartsch et al 1997). This was partly due to the increased precision of the experiments which now allowed resolution of individual nl states within each n-manifold.…”

Section: Introductioncontrasting

confidence: 49%

Dielectronic recombination data for dynamic finite-density plasmas

Colgan

Pindzola

Badnell

2004

A&A

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Section: Introductioncontrasting

confidence: 49%

Dielectronic recombination data for dynamic finite-density plasmas

Colgan

Pindzola

Badnell

2004

A&A

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“…of Li + (Závodszky et al 1998;Saghiri et al 1999), of C 4+ (Andersen et al 1989(Andersen et al , 1990Kilgus et al 1990Kilgus et al , 1993Schuch et al 1997), O 6+ (Andersen et al 1989(Andersen et al , 1990, Ne 8+ (Zong et al 1998), Si 12+ (Kenntner et al 1995;Bartsch et al 1997), Ar 16+ (Ali et al 1990(Ali et al , 1991Dewitt et al 1991), and Ti 20+ (O'Rourke et al 2004), Fe 24+ (Beiersdorfer et al 1992), Ni 26+ and Mo…”

Section: Introductionmentioning

confidence: 99%

Dielectronic recombination data for dynamic finite-density plasmas

Bautista¹,

Badnell

2007

A&A

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We report on total and final-state resolved partial dielectronic recombination data for helium-like ions forming lithium-like ions. The calculations consider ions of Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Kr, Mo, and Xe. The results are discussed and compared with available experimental data and with previous calculations. Our archived datasets include both total and level-specific DR rate coefficients. The total ion rate coefficients are provided both in tabulated form and as analytical fits for easy implementation into spectral modelling codes. We employ the level specific rate coefficients in constructing detailed spectral models of Li-like ions including the combined effects of collisional excitation and recombination. The results from these models are compared with the those pure collisional excitation models under typical conditions of low density plasmas. This work is part of an assembly of a dielectronic recombination database for modelling of finite-density plasmas.

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“…We then describe the experimental measurements of the electric-field dependence of autoionization yields of the Ba 6p 1/2 nk and 6p 3/2 nk states. As we show, the autoionization yield is complementary to DR. A novel feature of the measurements is the use of a low-field form of Stark switching [2,[8][9][10][11]. Finally, we show that the observed autoionization yields match those calculated from the extrapolated autoionization rates of the Ba 6p j n states, which demonstrates that the proposed method for determining which states contribute to DR is sound.…”

Section: Introductionmentioning

confidence: 60%

Dielectronic recombination and autoionization yields in weak static electric fields

Gallagher

2010

Phys. Rev. A

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Dielectronic recombination (DR) of ions and electrons occurs via intermediate doubly excited Rydberg states converging to an excited state of the ion, and the total energy-integrated rate is the sum of the rates through the n, Rydberg states. To make stringent comparisons between calculated and observed rates, it is useful to resolve the contributions to DR of different n and states. It is possible to separate experimentally the n states due to their different energies, but it is not possible to separate the nearly degenerate high-states. We propose that it should be possible to measure the contribution to DR of energetically unresolved high-states by measuring the recombination rate as a function of electric field. As the field is raised, progressively lower states are converted to Stark states. Autoionization rates increase as is decreased, and when the field is raised to the point that an state with an autoionization rate in excess of the radiative decay rate is added to the manifold of Stark states, the DR rate will exhibit an observable increase. To test this proposal we have made measurements of autoionization yields of the autoionizing Ba 6p 1/2 nk and 6p 3/2 nk Stark states. The autoionization yield is complementary to DR, and the measurements indicate that the proposed approach should work well. Although it is not surprising that this approach works for excited ion states that are isotropic, such as the Ba + 6p 1/2 state, it is less obvious that it should work for an anisotropic ion state, such as the Ba + 6p 3/2 state. In the latter case there are four quantum defects for each state instead of one, and the Stark effect of the Ba 6p 3/2 nk Stark states is far more complex than that of the Ba 6p 1/2 nk Stark states. Calculations of the Stark effect reveal that, while there are four times as many 6p 3/2 nk levels as 6p 1/2 nk levels, many of the interactions of the 6p 3/2 nk levels are negligible, and in practice the problem is no more complicated than the 6p 1/2 nk Stark problem.

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Field Enhanced Dielectronic Recombination ofSi11+Ions

Cited by 57 publications

References 20 publications

Dielectronic recombination data for dynamic finite-density plasmas

Dielectronic recombination data for dynamic finite-density plasmas

Dielectronic recombination data for dynamic finite-density plasmas

Dielectronic recombination and autoionization yields in weak static electric fields

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