Dielectronic recombination of Ni-like ions through the 3<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">d</mml:mi></mml:mrow><mml:mrow><mml:mn>9</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>4ln′l′ (n′=4,5) Cu-like configurations

Behar, E.; Mandelbaum, P.; Schwob, J. L.; Bar‐Shalom, A.; Oreg, J.; Goldstein, W. H.

doi:10.1103/physreva.52.3770

Cited by 32 publications

(16 citation statements)

References 17 publications

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“…Another possible decay is to lower states that still lie above the ionization limit and then further decay by either AI or radiative decay cascade (DAC) transitions. However, as research results show, the DR rates are less affected by DAC for the heavy elements and thus can be neglected for most applications [31]. Disregarding DAC then leads to the following approximation for the DR branching ratio [31]:…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…However, as research results show, the DR rates are less affected by DAC for the heavy elements and thus can be neglected for most applications [31]. Disregarding DAC then leads to the following approximation for the DR branching ratio [31]:…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…Reliable atomic data including energy levels, transition probabilites, and rate coefficients for various dynamic processes are urgently needed. In the past, the DR rate of Ni-like gadolinium, where the DR process can provide a potential source for soft x-ray laser operation, has been studied [1][2][3]. Tungsten is being considered as a plasma-facing material in magnetically confined fusion devices, such as ITER, because of its low sputtering rate, high-temperature characteristics, and low tritium absorption.…”

Section: Introductionmentioning

confidence: 99%

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Dielectronic recombination of Rh-like Gd and W

O’Sullivan

et al. 2012

Phys. Rev. A

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Ab initio calculations of dielectronic recombination rate coefficients of Rh-like gadolinium and tungsten have been performed. Energy levels, radiative transition probabilities, and autoionization rates of Pd-like gadolinium and tungsten for [Zn]4p 6 4d 8 4fnl, [Zn]4p 6 4d 8 5l nl, [Zn]4p 6 4d 8 6l nl and [Zn]4p 5 4d 10 nl, [Zn]4p 5 4d 9 4fnl, [Zn]4p 5 4d 9 5l nl, [Zn]4p 5 4d 9 6l nl (n 18) complexes were calculated using the flexible atomic code. The contributions from resonant and nonresonant radiative stabilizing transitions to the total rate coefficients are discussed. Results show that the contributions from nonresonant radiative stabilizing transitions are significantly enchanced for W when compared with Gd as a result of lowering of energy levels relative to the ionization limit. In addition, the widely used Burgess-Merts semiempirical formula may underestimate the dielectronic recombination rate coefficients in the temperature regions of interest. The present calculated rate coefficients are fitted to a semiemperical formula. The data obtained are expected to be useful for modelling plasmas both for extreme ultraviolet lithography source development and for fusion applications.

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Section: Theoretical Methodsmentioning

confidence: 99%

Section: Theoretical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dielectronic recombination of Rh-like Gd and W

O’Sullivan

et al. 2012

Phys. Rev. A

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“…For a detailed treatment of decays to autoionizing levels (t ′ ) and their potential contribution to the DR rate, see Ref. [18].…”

Section: Theoretical Methods For Dr Calculationmentioning

confidence: 99%

Iso-nuclear tungsten dielectronic recombination rates for use in magnetically-confined fusion plasmas

Kwon

Lee

Preval

et al. 2018

Atomic Data and Nuclear Data Tables

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Under the auspices of the IAEA Atomic and Molecular Data Center and the Korean Atomic Energy Research Institute, our assembled group of authors has reviewed the current state of dielectronic recombination (DR) rate coefficients for various ion stages of tungsten (W). Subsequent recommendations were based upon available experimental data, first-principle calculations carried out in support of this paper and from available recombination data within existing atomic databases. If a recommendation was possible, data were compiled, evaluated and fitted to a functional form with associated uncertainty information retained, where available. This paper also considers the variation of the W fractional abundance due to the underlying atomic data when employing different data sets

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“…The last term in the denominator of this equation represents decays into autoionizing levels followed by radiative decay cascade (DAC) transition rates. However, as research results show, the DR rates are less affected by DAC for the heavy elements and thus can be neglected for most applications [16]. Disregarding DAC then leads to the following approximation for the DR branching ratio [16]:…”

Section: Theoretical Methodsmentioning

confidence: 99%

Dielectronic recombination of Pd-like gadolinium

O'Sullivan

et al. 2012

Phys. Rev. A

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Abstract:As research and development of extreme ultraviolent lithography (EUVL) sources at 6.7 nm (which will be based on emission from ionised gadolinium) has already begun, reliable atomic data are required in order to determine the optimum plasma conditions. However, the complexity of the atomic structure means that ab initio levelresolved dielectronic recombination (DR) calculations are currently unavailable for the ions of interest. Here we report the first detailed calculation of the DR rate coefficients for the ground-state and first excited states of Pd-like gadolinium. Energy levels, radiative transition probabilities and autoionization rates of Ag-like gadolinium for [Kr] The DR rate coefficients obtained here are compared with radiative recombination and three-body recombination coefficients. The results show that the DR rate coefficient is almost an order of magnitude higher than the coefficients for the other two recombination processes combined at plasma electron temperatures around 110 eV, which suggests that the DR process is the dominant recombination mechanism for Pd-like gadoliinum in EUVL source plasmas.

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Dielectronic recombination of Ni-like ions through the 3d94ln′l′ (n′=4,5) Cu-like configurations

Cited by 32 publications

References 17 publications

Dielectronic recombination of Rh-like Gd and W

Dielectronic recombination of Rh-like Gd and W

Iso-nuclear tungsten dielectronic recombination rates for use in magnetically-confined fusion plasmas

Dielectronic recombination of Pd-like gadolinium

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