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Electron-ion recomb...
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Ali, SafdarStockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden
(författare)
Electron-ion recombination rate coefficients for C II forming C I
- Artikel/kapitelEngelska2012
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LIBRIS-ID:oai:DiVA.org:su-75372
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-75372URI
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https://doi.org/10.1088/0004-637X/753/2/132DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17059URI
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Språk:engelska
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Sammanfattning på:engelska
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We have determined absolute dielectronic recombination rate coefficients for C II, using the CRYRING heavy-ions storage ring. The resonances due to 2s-2p (∆n = 0) core excitations are detected in the center-of-mass energy range of 0-15 eV. The experimental results are compared with intermediate coupling AUTOSTRUCTURE calculations. Plasma rate coefficients are obtained from the DR spectrum by convoluting it with a Maxwell-Boltzmann energy distribution for temperatures in the range of 103-106 K. The derived temperature dependent plasma recombination rate coefficients are presented graphically to compare with the theoretical data available in literature and parameterized by using a fit formula for convenient use in plasma modelling codes. In the temperature range of 103-2×104 K, our experimental results show that previous calculations severely underestimate the plasma rate coefficients and also our AUTOSTRUCTURE calculation does not reproduce the experimental plasma rate coefficients well. Above 2×104 K the agreement between the experimental and theoretical rate coefficients is much better, and the deviations are smaller than the estimated uncertainties.
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Orban, IstvanStockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden(Swepub:su)orban
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Altun, ZikriMarmara Univ, Dept Phys, TR-81040 Istanbul, Turkey
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Glans, PeterMittuniversitetet,Institutionen för tillämpad naturvetenskap och design (-2013)(Swepub:miun)petgla
(författare)
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Schuch, ReinholdStockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden(Swepub:su)schuch
(författare)
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Stockholms universitetFysikum
(creator_code:org_t)
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Ingår i:Astrophysical Journal753:2, s. 132-0004-637X1538-4357
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