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ALTUN, ZİKRİ

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ZİKRİ

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2004 - 20073
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Author: YUMAK YAHŞİ, AYŞE × Subject: IONIZATION EQUILIBRIUM ×

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Now showing 1 - 3 of 3
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    PublicationOpen Access
    Dielectronic recombination data for dynamic finite-density plasmas - VI. The boron isoelectronic sequence
    (EDP SCIENCES S A, 2004-06) YUMAK YAHŞİ, AYŞE; Altun, Z; Yumak, A; Badnell, NR; Colgan, J; Pindzola, MS
    We have calculated dielectronic recombination rate coefficients for 22 ions of the boron isoelectronic sequence, between C+ and Xe49+, within the generalized collisional-radiative framework, as outlined by Badnell et al. (2003). Calculations have been performed from both ground and metastable initial states, in both LS- and intermediate-coupling, allowing for Deltan = 0 and Deltan = 1 core-excitations. Results are presented and discussed for a selection of ions from the sequence. Results which are not presented here can be accessed from the Atomic Data and Analysis Structure (ADAS) database (Summers 2003) or from the Oak Ridge Controlled Fusion Atomic Data Center (http://www-cfadc.phy.ornl.gov). Comparison is made with the results of other existing theoretical calculations.
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    PublicationOpen Access
    Dielectronic recombination data for dynamic finite-density plasmas - XIII. The magnesium isoelectronic sequence
    (EDP SCIENCES S A, 2007-11) YUMAK YAHŞİ, AYŞE; Altun, Z.; Yumak, A.; Yavuz, I.; Badnell, N. R.; Loch, S. D.; Pindzola, M. S.
    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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    PublicationOpen Access
    Dielectronic recombination data for dynamic finite-density plasmas - XI. The sodium isoelectronic sequence
    (EDP SCIENCES S A, 2006-03) YUMAK YAHŞİ, AYŞE; Altun, Z; Yumak, A; Badnell, NR; Loch, SD; Pindzola, MS
    Dielectronic recombination (DR) rate coefficients for 22 sodium-like ions, between Mg+ and Xe43+, forming magnesium-like ions have been calculated as part of the assembly of a level-resolved DR database necessary for modelling dynamic finite-density plasmas, within the generalized collisional - radiative framework. Calculations have been performed from both ground and metastable initial states, in both LS - and intermediate coupling, allowing for Delta n = 0 and Delta n = 1 core-excitations from ground and metastable levels. Partial and total DR coefficients have been calculated for Mg+ to Zn19+, as well as Kr25+, Mo31+, and Xe43+. Results for a selection of ions from the sequence are discussed in the paper 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).