Non-coherent scattering in subordinate lines: IV. Angle-averaged redistribution functions

P. Heinzel; I. Hubený

doi:10.1016/0022-4073(83)90077-8

Non-coherent scattering in subordinate lines: IV. Angle-averaged redistribution functions

P. Heinzel, I. Hubený

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

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 R_i(x′, x) (i = I-V). We display graphically the functions R_II,III,V and discuss in detail the behaviour of the newly calculated redistribution R_V(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 R_V, analogous to that of Jefferies and White, is briefly discussed.

Original language	English (US)
Pages (from-to)	77-88
Number of pages	12
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	30
Issue number	1
DOIs	https://doi.org/10.1016/0022-4073(83)90077-8
State	Published - Jul 1983
Externally published	Yes

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Spectroscopy

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10.1016/0022-4073(83)90077-8

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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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AU - Hubený, I.

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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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Non-coherent scattering in subordinate lines: IV. Angle-averaged redistribution functions

Abstract

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