J/A+A/434/365 A-values & oscillator strength of O-like ions (Landi+, 2005)
Radiative transition probabilities in the O-like sequence.
Landi O.
<Astron. Astrophys. 434, 365 (2005)>
=2005A&A...434..365L 2005A&A...434..365L
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - radiation mechanisms: general -
line: formation - Sun: corona
Abstract:
In the present work a complete set of radiative transition rates is
calculated for all for the O-like ions with Z=11-30. Energy levels,
oscillator strengths and A values are computed for all transitions
within the n=2 complex and are compared with previous calculations,
where available. Calculations are carried out using the Superstructure
code. The present work provides for the first time a self-consistent,
complete set of A values necessary for the calculation of line
emissivities and synthetic spectra for all the ions considered,
filling several gaps in the existing literature. The present data are
especially suited for the analysis of spectral lines emitted by the
less-abundant elements in the universe, for which few if any data were
available in the literature.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 200 Energies for the n=2 levels in the O-like
isoelectronic sequence
aos.dat 39 780 A-values and weighted oscillator strengths
for the O-like sequence (tables 3-8 of the paper)
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See also:
VI/72 : Atomic Transition Probabilities, Sc-Ni (NIST 1993)
J/A+A/385/716 : N-like and O-like Breit-Pauli energy levels (Tachiev+, 2002)
J/A+AS/108/1 : IRON Project. V. O-like ions (Butler+, 1994)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ion Ion designation
10- 11 I2 --- Index Index number
13- 23 A11 --- Level Level designation
24- 33 F10.2 cm-1 E Experimental energy (1)
38- 47 F10.2 cm-1 Eth Theoretical energy calculated in the present work
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Note (1): Experimental energies come from Edlen (1983, Phys. Scr. 28, 51),
with the only exception of Fe XIX and Ni XXI, which are taken from
Shirai et al. (2000, J. Phys. Chem. Ref. Data Monograph, 8).
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Byte-by-byte Description of file: aos.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Ion Ion designation
10 I1 --- Down Lower level index
12 A1 -- --- [-]
14- 15 I2 --- Up Upper level index
17- 19 A3 --- Type Type of transition (1)
21- 29 E9.4 s-1 A A-value
31- 39 E9.4 --- gf Weighted oscillator strength
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Note (1): Type of transition as follows:
E1 = electric dipole transitions
E1f = spin-forbidden E1 transitions
E2 = electric quadrupole transitions
M1 = magnetic dipole transitions
M2 = magnetic quadrupole transitions.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Apr-2005