Non-coherent scattering in subordinate lines

IV. Angle-averaged redistribution functions

P. Heinzel, Ivan - Hubeny

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

It is demonstrated that a simple Gaussian quadrature over the scattering angles provides a sufficiently accurate and stable method for evaluating all the angle-averaged redistribution functions Ri(x′, x) (i = I-V). We display graphically the functions RII,III,V and discuss in detail the behaviour of the newly calculated redistribution RV(x′, x). It is shown that this function exhibits important coherence peaks in the line-wing region which can affect the formation of subordinate lines. An approximate form of RV, analogous to that of Jefferies and White, is briefly discussed.

Original languageEnglish (US)
Pages (from-to)77-88
Number of pages12
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume30
Issue number1
DOIs
StatePublished - 1983
Externally publishedYes

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Scattering
scattering
quadratures
wings

ASJC Scopus subject areas

  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "It is demonstrated that a simple Gaussian quadrature over the scattering angles provides a sufficiently accurate and stable method for evaluating all the angle-averaged redistribution functions Ri(x′, x) (i = I-V). We display graphically the functions RII,III,V and discuss in detail the behaviour of the newly calculated redistribution RV(x′, x). It is shown that this function exhibits important coherence peaks in the line-wing region which can affect the formation of subordinate lines. An approximate form of RV, analogous to that of Jefferies and White, is briefly discussed.",
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T2 - IV. Angle-averaged redistribution functions

AU - Heinzel, P.

AU - Hubeny, Ivan -

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N2 - It is demonstrated that a simple Gaussian quadrature over the scattering angles provides a sufficiently accurate and stable method for evaluating all the angle-averaged redistribution functions Ri(x′, x) (i = I-V). We display graphically the functions RII,III,V and discuss in detail the behaviour of the newly calculated redistribution RV(x′, x). It is shown that this function exhibits important coherence peaks in the line-wing region which can affect the formation of subordinate lines. An approximate form of RV, analogous to that of Jefferies and White, is briefly discussed.

AB - It is demonstrated that a simple Gaussian quadrature over the scattering angles provides a sufficiently accurate and stable method for evaluating all the angle-averaged redistribution functions Ri(x′, x) (i = I-V). We display graphically the functions RII,III,V and discuss in detail the behaviour of the newly calculated redistribution RV(x′, x). It is shown that this function exhibits important coherence peaks in the line-wing region which can affect the formation of subordinate lines. An approximate form of RV, analogous to that of Jefferies and White, is briefly discussed.

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JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

SN - 0022-4073

IS - 1

ER -