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Electron-ion recomb...
Electron-ion recombination rate coefficients for C II forming C I
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- Ali, Safdar (författare)
- Stockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden
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- Orban, Istvan (författare)
- Stockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden
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- Mahmood, Sultan, 1969- (författare)
- Stockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden
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- Altun, Zikri (författare)
- Marmara Univ, Dept Phys, TR-81040 Istanbul, Turkey
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- Glans, Peter (författare)
- Mittuniversitetet,Institutionen för tillämpad naturvetenskap och design (-2013)
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- Schuch, Reinhold (författare)
- Stockholms universitet,Fysikum,Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden
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(creator_code:org_t)
- 2012
- 2012
- Engelska.
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Ingår i: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 753:2, s. 132-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- atomic data
- atomic processes
- plasmas
- Physics
- fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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