Abstract
Tables of width cross-sections are presented for the broadening of general s-p and p-s atomic transitions by collisions with neutral atomic hydrogen. The transitions are characterized by the effective principal quantum numbers of the s and p states. Each cross-section is given for a relative velocity of 104 m s –1 together with an exponent α calculated on the assumption that the cross-section varies with velocity as v-α. The cross-sections were calculated using the methods described by the authors in a previous paper. The cross-sections are tested by using them in the synthesis of a selection of strong solar lines of sodium, calcium and iron with well-determined f-values. The abundances derived from the strong lines are consistent with the meteoritic values.
Keywords
PhysicsCross section (physics)Atomic physicsHydrogenPrincipal quantum numberRelative velocityAtomic electron transitionSpectral lineQuantumQuantum mechanics
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Publication Info
- Year
- 1995
- Type
- article
- Volume
- 276
- Issue
- 3
- Pages
- 859-866
- Citations
- 338
- Access
- Closed
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Cite This
Stuart Anstee,
B. J. O’Mara
(1995).
Width cross-sections for collisional broadening of s–p and p–s transitions by atomic hydrogen.
Monthly Notices of the Royal Astronomical Society
, 276
(3)
, 859-866.
https://doi.org/10.1093/mnras/276.3.859
Identifiers
- DOI
- 10.1093/mnras/276.3.859