Dielectronic recombination data for dynamic finite-density plasmas - XIII: The magnesium isoelectronic sequence

Z. Altun, A. Yumak, I. Yavuz, N. R. Badnell, S. D. Loch, M. S. Pindzola

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We have calculated total and partial final- state level- resolved dielectronic recombination ( DR) rate coe. cients for the ground and metastable initial levels of 21 Mg- like ions between Al+ and Xe42+. This is the final part of the assembly of a levelresolved DR database necessary for modelling dynamic finite-density plasmas within the generalized collisional-radiative framework. Calculations have been performed in both LS-and intermediate coupling, allowing for. n = 0 and. n = 1 core- excitations from ground and metastable levels. Complementary partial and total radiative recombination RR coeficients have been calculated for the same ions viz. Al+ through Zn18+, as well as Kr24+, Mo30+, and Xe42+. Fitting coeficients which describe the total RR and DR rate coeficients (separately) are also presented here. Results for a selection of ions fromthis sequence are discussed, and compared with existing theoretical and experimental results. A full set of results can be accessed from the Atomic Data and Analysis Structure (ADAS) database or from the Oak Ridge Controlled Fusion Atomic Data Center (http://www-cfadc.phy.ornl.gov/data_and_codes). The complexity of further M-shell sequences, both from the atomic and modelling perspectives, renders this juncture a natural conclusion for the assemblage of the partial database. Further M-shell work, has and will, focus more on total rate coe. cients, rather than partials, at least in the medium term.

LanguageEnglish
Pages1051-1059
Number of pages9
JournalAstronomy and Astrophysics
Volume474
Issue number3
DOIs
Publication statusPublished - Nov 2007

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isoelectronic sequence
recombination
plasma density
magnesium
plasma
controlled fusion
ion
ions
data structures
radiative recombination
shell
ridges
assembly
modeling
excitation
rate

Keywords

  • atomic data
  • atomic processes
  • plasmas
  • electron ion recombination
  • active galactic nuclei
  • optically thin plasmas
  • X-Ray absorption
  • ionization equilibrium
  • rate coefficients
  • low temperatures
  • emission rates
  • M-shell
  • FE-XIV

Cite this

Altun, Z. ; Yumak, A. ; Yavuz, I. ; Badnell, N. R. ; Loch, S. D. ; Pindzola, M. S. / Dielectronic recombination data for dynamic finite-density plasmas - XIII : The magnesium isoelectronic sequence. In: Astronomy and Astrophysics. 2007 ; Vol. 474, No. 3. pp. 1051-1059.
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abstract = "We have calculated total and partial final- state level- resolved dielectronic recombination ( DR) rate coe. cients for the ground and metastable initial levels of 21 Mg- like ions between Al+ and Xe42+. This is the final part of the assembly of a levelresolved DR database necessary for modelling dynamic finite-density plasmas within the generalized collisional-radiative framework. Calculations have been performed in both LS-and intermediate coupling, allowing for. n = 0 and. n = 1 core- excitations from ground and metastable levels. Complementary partial and total radiative recombination RR coeficients have been calculated for the same ions viz. Al+ through Zn18+, as well as Kr24+, Mo30+, and Xe42+. Fitting coeficients which describe the total RR and DR rate coeficients (separately) are also presented here. Results for a selection of ions fromthis sequence are discussed, and compared with existing theoretical and experimental results. A full set of results can be accessed from the Atomic Data and Analysis Structure (ADAS) database or from the Oak Ridge Controlled Fusion Atomic Data Center (http://www-cfadc.phy.ornl.gov/data_and_codes). The complexity of further M-shell sequences, both from the atomic and modelling perspectives, renders this juncture a natural conclusion for the assemblage of the partial database. Further M-shell work, has and will, focus more on total rate coe. cients, rather than partials, at least in the medium term.",
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Dielectronic recombination data for dynamic finite-density plasmas - XIII : The magnesium isoelectronic sequence. / Altun, Z.; Yumak, A.; Yavuz, I.; Badnell, N. R.; Loch, S. D.; Pindzola, M. S.

In: Astronomy and Astrophysics, Vol. 474, No. 3, 11.2007, p. 1051-1059.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dielectronic recombination data for dynamic finite-density plasmas - XIII

T2 - Astronomy and Astrophysics

AU - Altun, Z.

AU - Yumak, A.

AU - Yavuz, I.

AU - Badnell, N. R.

AU - Loch, S. D.

AU - Pindzola, M. S.

PY - 2007/11

Y1 - 2007/11

N2 - We have calculated total and partial final- state level- resolved dielectronic recombination ( DR) rate coe. cients for the ground and metastable initial levels of 21 Mg- like ions between Al+ and Xe42+. This is the final part of the assembly of a levelresolved DR database necessary for modelling dynamic finite-density plasmas within the generalized collisional-radiative framework. Calculations have been performed in both LS-and intermediate coupling, allowing for. n = 0 and. n = 1 core- excitations from ground and metastable levels. Complementary partial and total radiative recombination RR coeficients have been calculated for the same ions viz. Al+ through Zn18+, as well as Kr24+, Mo30+, and Xe42+. Fitting coeficients which describe the total RR and DR rate coeficients (separately) are also presented here. Results for a selection of ions fromthis sequence are discussed, and compared with existing theoretical and experimental results. A full set of results can be accessed from the Atomic Data and Analysis Structure (ADAS) database or from the Oak Ridge Controlled Fusion Atomic Data Center (http://www-cfadc.phy.ornl.gov/data_and_codes). The complexity of further M-shell sequences, both from the atomic and modelling perspectives, renders this juncture a natural conclusion for the assemblage of the partial database. Further M-shell work, has and will, focus more on total rate coe. cients, rather than partials, at least in the medium term.

AB - We have calculated total and partial final- state level- resolved dielectronic recombination ( DR) rate coe. cients for the ground and metastable initial levels of 21 Mg- like ions between Al+ and Xe42+. This is the final part of the assembly of a levelresolved DR database necessary for modelling dynamic finite-density plasmas within the generalized collisional-radiative framework. Calculations have been performed in both LS-and intermediate coupling, allowing for. n = 0 and. n = 1 core- excitations from ground and metastable levels. Complementary partial and total radiative recombination RR coeficients have been calculated for the same ions viz. Al+ through Zn18+, as well as Kr24+, Mo30+, and Xe42+. Fitting coeficients which describe the total RR and DR rate coeficients (separately) are also presented here. Results for a selection of ions fromthis sequence are discussed, and compared with existing theoretical and experimental results. A full set of results can be accessed from the Atomic Data and Analysis Structure (ADAS) database or from the Oak Ridge Controlled Fusion Atomic Data Center (http://www-cfadc.phy.ornl.gov/data_and_codes). The complexity of further M-shell sequences, both from the atomic and modelling perspectives, renders this juncture a natural conclusion for the assemblage of the partial database. Further M-shell work, has and will, focus more on total rate coe. cients, rather than partials, at least in the medium term.

KW - atomic data

KW - atomic processes

KW - plasmas

KW - electron ion recombination

KW - active galactic nuclei

KW - optically thin plasmas

KW - X-Ray absorption

KW - ionization equilibrium

KW - rate coefficients

KW - low temperatures

KW - emission rates

KW - M-shell

KW - FE-XIV

U2 - 10.1051/0004-6361:20078238

DO - 10.1051/0004-6361:20078238

M3 - Article

VL - 474

SP - 1051

EP - 1059

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 3

ER -