Dielectronic recombination, photoionization and opacities

N. R. Badnell; M.J. Seaton; Hugh Summers

doi:10.1063/1.1960943

Dielectronic recombination, photoionization and opacities

N. R. Badnell, M.J. Seaton, Hugh Summers

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Abstract

We review methodologies for describing dielectronic recombination (DR). We look briefly at the state-of-play of theory vs experiment. We then discuss how to deliver DR data in a form suitable for modelling and we review the status of the partial and total DR database being assembled for the modelling of dynamic finite-density plasmas. We comment on the role of fields and how modelling l-changing collisions approximately models the dynamic part of the plasma microfield.
We also consider the inverse process of photoionization and discuss how the same approach to DR is being used for inner-shell photoionization and the determination of opacities in stellar interiors. In particular, we pay attention to the role of opacity in connection with the discrepancy between the helioseismology observations and stellar evolution models for the position of the base of the solar convective zone.

Original language	English
Title of host publication	X-Ray diagnostics of astrophysical plasmas
Subtitle of host publication	theory, experiment and observation
Editors	Randall K. Smith
Place of Publication	Melville
Pages	305-314
Number of pages	9
DOIs	https://doi.org/10.1063/1.1960943
Publication status	Published - 12 Jul 2005
Event	Annual Scientific Session on High-Temperature Superconductivity - Moscow, Russian Federation Duration: 19 Dec 2001 → 19 Dec 2001

Publication series

Name	AIP conference proceedings
Publisher	American Institute of Physics
Volume	774
ISSN (Print)	0094-243X

Conference

Conference	Annual Scientific Session on High-Temperature Superconductivity
Country/Territory	Russian Federation
City	Moscow
Period	19/12/01 → 19/12/01

Keywords

atomic data
interiors
stars
atomic processes
finite-density plasmas
opal
fields
spectra
electron
transitions
temperature
emission
solar corona
isoelectronic sequence

Access to Document

10.1063/1.1960943

Cite this

@inproceedings{dd1529c72878416b831fe8d222db85fa,

title = "Dielectronic recombination, photoionization and opacities",

abstract = "We review methodologies for describing dielectronic recombination (DR). We look briefly at the state-of-play of theory vs experiment. We then discuss how to deliver DR data in a form suitable for modelling and we review the status of the partial and total DR database being assembled for the modelling of dynamic finite-density plasmas. We comment on the role of fields and how modelling l-changing collisions approximately models the dynamic part of the plasma microfield. We also consider the inverse process of photoionization and discuss how the same approach to DR is being used for inner-shell photoionization and the determination of opacities in stellar interiors. In particular, we pay attention to the role of opacity in connection with the discrepancy between the helioseismology observations and stellar evolution models for the position of the base of the solar convective zone.",

keywords = "atomic data, interiors , stars , atomic processes, finite-density plasmas, opal , fields, spectra, electron, transitions, temperature, emission, solar corona, isoelectronic sequence",

author = "Badnell, {N. R.} and M.J. Seaton and Hugh Summers",

year = "2005",

month = jul,

day = "12",

doi = "10.1063/1.1960943",

language = "English",

isbn = "9780735402591 ",

series = "AIP conference proceedings",

publisher = "American Institute of Physics",

pages = "305--314",

editor = "Smith, {Randall K. }",

booktitle = "X-Ray diagnostics of astrophysical plasmas",

note = "Annual Scientific Session on High-Temperature Superconductivity ; Conference date: 19-12-2001 Through 19-12-2001",

}

Badnell, NR, Seaton, MJ & Summers, H 2005, Dielectronic recombination, photoionization and opacities. in RK Smith (ed.), X-Ray diagnostics of astrophysical plasmas: theory, experiment and observation . AIP conference proceedings, vol. 774, Melville, pp. 305-314, Annual Scientific Session on High-Temperature Superconductivity , Moscow, Russian Federation, 19/12/01. https://doi.org/10.1063/1.1960943

Dielectronic recombination, photoionization and opacities. / Badnell, N. R.; Seaton, M.J.; Summers, Hugh.

X-Ray diagnostics of astrophysical plasmas: theory, experiment and observation . ed. / Randall K. Smith. Melville, 2005. p. 305-314 (AIP conference proceedings; Vol. 774).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - Dielectronic recombination, photoionization and opacities

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AU - Seaton, M.J.

AU - Summers, Hugh

PY - 2005/7/12

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N2 - We review methodologies for describing dielectronic recombination (DR). We look briefly at the state-of-play of theory vs experiment. We then discuss how to deliver DR data in a form suitable for modelling and we review the status of the partial and total DR database being assembled for the modelling of dynamic finite-density plasmas. We comment on the role of fields and how modelling l-changing collisions approximately models the dynamic part of the plasma microfield. We also consider the inverse process of photoionization and discuss how the same approach to DR is being used for inner-shell photoionization and the determination of opacities in stellar interiors. In particular, we pay attention to the role of opacity in connection with the discrepancy between the helioseismology observations and stellar evolution models for the position of the base of the solar convective zone.

AB - We review methodologies for describing dielectronic recombination (DR). We look briefly at the state-of-play of theory vs experiment. We then discuss how to deliver DR data in a form suitable for modelling and we review the status of the partial and total DR database being assembled for the modelling of dynamic finite-density plasmas. We comment on the role of fields and how modelling l-changing collisions approximately models the dynamic part of the plasma microfield. We also consider the inverse process of photoionization and discuss how the same approach to DR is being used for inner-shell photoionization and the determination of opacities in stellar interiors. In particular, we pay attention to the role of opacity in connection with the discrepancy between the helioseismology observations and stellar evolution models for the position of the base of the solar convective zone.

KW - atomic data

KW - interiors

KW - stars

KW - atomic processes

KW - finite-density plasmas

KW - opal

KW - fields

KW - spectra

KW - electron

KW - transitions

KW - temperature

KW - emission

KW - solar corona

KW - isoelectronic sequence

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DO - 10.1063/1.1960943

M3 - Conference contribution book

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T3 - AIP conference proceedings

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BT - X-Ray diagnostics of astrophysical plasmas

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T2 - Annual Scientific Session on High-Temperature Superconductivity

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