J/A+AS/142/467 Broadening of metallic lines by H collisions (Barklem+ 2000)
A list of data for the broadening of metallic lines by
neutral hydrogen collisions.
Barklem P.S., Piskunov N., O'Mara B.J.
<Astron. Astrophys. Suppl. Ser. 142, 467 (2000)>
=2000A&AS..142..467B 2000A&AS..142..467B
ADC_Keywords: Atomic physics
Keywords: atomic data - line: profiles - astronomical data bases: miscellaneous
Description:
File table1 is a list of theoretical data for the broadening of
metallic lines by collisions with neutral hydrogen atoms. The list
contains data for 4891 spectral lines between 2300 and 13000 Angstroms
of elements from Li to Ni.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 4891 List of broadening data and other data used in
computation
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See also:
VI/98 : Stark broadening of H lines (Stehle+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 F5.2 --- spec Packed element and ionisation stage (1)
7- 16 F10.3 0.1nm lambda Air wavelength (Angstroms)
18- 21 F4.1 --- lowJ Lower level J quantum number
23- 26 F4.1 --- uppJ Upper level J quantum number
28- 34 F7.3 eV lowE Lower level energy in eV (2)
36- 42 F7.3 eV uppE Upper level energy in eV (2)
44- 53 F10.3 cm-1 lowEcm Lower level energy in waves/cm (2)
55- 64 F10.3 cm-1 lowlim Lower level series limit in waves/cm (2)
66- 75 F10.3 cm-1 uppEcm Upper level energy in waves/cm (2)
77- 86 F10.3 cm-1 upplim Upper level series limit in waves/cm (2)
88 I1 --- lowl Lower level l quantum number
90 I1 --- uppl Upper level l quantum number
92- 97 F6.0 2.80x10-21m2 sigma Broadening cross-section in a.u. (3)
99-103 F5.3 --- alpha Velocity parameter alpha
105-110 F6.3 [rad.cm3/s] logGam Log of the FWHM per perturber at 10000K
112-116 F5.3 --- Texp Temperature dependence exponent
(1-alpha)/2
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Note (1): The element and ionisation stage are packed into one parameter
given by Z + (Z-N)*0.01 where Z is the atomic number of the
element, and N is the total number of electrons.
Note (2): A value of -1.0 indicates that the data was computed directly
and not interpolated from the grids. This occurs for all lines
of singly ionised species and a few important neutral species
lines where the states lie just off the grid.
Note (3): The atomic unit of cross-section is a02, Bohr radius squared
(the Bohr radius is the constant
a0 = ε0 h2/(π m e2)
from Permittivity, Planck, electron mass and charge constants)
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Acknowledgements: Paul Barklem
(End) Patricia Bauer [CDS] 09-Mar-2000