J/PAZh/28/41 Eu III oscillator strengths (Masonkina+, 2002)
Eu III oscillator strengths and Europium abundances in Ap stars.
Masonkina L.I., Ryabtsev A.N., Ryabchikova T.A.
<Pis'ma Astron. Zh. 28, 41 (2002)>
=2002PAZh...28...41M 2002PAZh...28...41M
=2002AstL...28...34M 2002AstL...28...34M
ADC_Keywords: Atomic physics
Abstract:
The calculations of the spectrum and oscillator strengths for the
4f7-(4f65d+4f66s) Eu III transitions. The calculations were
performed with Cowan's RCN-RCG-RCE codes in the single-configuration
approximation. The new oscillator strengths were tested by analyzing
the Europium abundances using Eu II and Eu III lines in the spectra of
hot peculiar stars (α2 CVn is a typical representative) and a
cool peculiar stars (β CrB is a typical representative).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 52 28 Semiempirical (SE) and Hartree-Fock (HF) parameters
of the 4f7 and 4f65d+4f66s EuIII
configurations and their ratios
table2.dat 77 80 Level energies for the 4f7 and 4f6(5d+6s)
Eu III configurations
table3.dat 80 78 Transition probabilities and oscillator strengths
for Eu III
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See also:
J/A+A/389/716 : Oscillator strengths for Li-like ions (Nahar, 2002)
Byte-by-byte Description of files: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Par Parameter designation
17- 22 I6 cm-1 SE Semiempirical energy parameter
24- 26 I3 cm-1 e_SE ? Uncertainty in SE
30- 35 I6 cm-1 HF Hartree-Fock energy parameter
39- 47 F9.3 --- SE/HF ? Ratio of SE and HF parameters
48 A1 --- Note [*] Note (1)
50- 51 A2 --- Comments Comments (2)
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Note (1): Differences SE-HF are given for the mean configuration energies.
Note (2): Fitting parameters:
r1,r2,r3: parameters that are related to the HF ratios during the fitting
f: fixed parameter during the fitting
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Byte-by-byte Description of files: table2.dat
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Bytes Format Units Label Explanations
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1 I1 --- Par [0,1] Level parity (0=even, 1=odd)
4- 11 F8.2 cm-1 E Experimental level energy Eu III
12 A1 --- Note [*] *: Unknown level with theoretical values
14- 17 I4 cm-1 E-Eth Difference between experimental and
theoretical values of energy
19- 24 F6.3 --- g Lande factor
27- 30 A4 --- Config Configuration
33- 35 F3.1 --- J Total angular momentum
38- 77 A40 --- Comp Composition of this level
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Byte-by-byte Description of files: table3.dat
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Bytes Format Units Label Explanations
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1- 50 A50 --- Trans Transition designation
53- 60 F8.3 0.1nm lambda Wavelength
61 A1 --- Note [S] Note (1)
64- 72 E9.3 s-1 g(u)A Transition probability
75- 80 F6.3 --- log(gf) Logarithm of oscillator strength
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Note (1): Wavelength is taken from Sugar & Spector, 1974, Opt. Soc. Am. 64, 1484
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(End) Veta Avedisova (INASAN) 07-Apr-2002