J/A+A/414/377 FeX-FeXVII fine-structure K-vacancy levels (Mendoza+, 2004)
Decay properties of K-vacancy states in Fe X-Fe XVII
Mendoza C., Kallman T.R., Bautista M.A., Palmeri P.
<Astron. Astrophys. 414, 377 (2004)>
=2004A&A...414..377M 2004A&A...414..377M
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - X-rays: spectroscopy
Abstract:
We report extensive calculations of the decay properties of
fine-structure K-vacancy levels in Fe X-Fe XVII. A large set of level
energies, wavelengths, radiative and Auger rates, and fluorescence
yields has been computed using three different standard atomic codes,
namely Cowan's HFR, AUTOSTRUCTURE and the Breit-Pauli R-matrix
package. This multi-code approach is used to the study the effects of
core relaxation, configuration interaction and the Breit interaction,
and enables the estimate of statistical accuracy ratings. The K-alpha
and KLL Auger widths have been found to be nearly independent of both
the outer-electron configuration and electron occupancy keeping a
constant ratio of 1.53±0.06. By comparing with previous theoretical
and measured wavelengths, the accuracy of the present set is
determined to be within 2mÅ. Also, the good agreement found between
the different radiative and Auger data sets that have been computed
allow us to propose with confidence an accuracy rating of 20% for the
line fluorescence yields greater than 0.01. Emission and absorption
spectral features are predicted finding good correlation with
measurements in both laboratory and astrophysical plasmas.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 52 251 Level list
table5.dat 35 876 Line list
--------------------------------------------------------------------------------
See also:
J/A+A/410/359 : Radiative and Auger decay for Fe II-Fe IX (Palmeri+, 2003)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- N Number of electrons
4- 6 I3 --- i Index
8- 27 A20 --- State Designation (1)
29- 34 F6.4 keV E Energy
36- 43 E8.2 s-1 Ar Radiative width
45- 52 E8.2 s-1 Aa Auger width
--------------------------------------------------------------------------------
Note (1): ':' questionable due to mixing
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- N Number of electrons
4- 6 I3 --- k Index of the upper level
8- 10 I3 --- i Index of the lower level
12- 17 F6.4 0.1nm Lambda Wavelength
19- 26 E8.2 s-1 Ar Transition probability
28- 35 E8.2 --- Omega Fluorescence yield
--------------------------------------------------------------------------------
Acknowledgements: Patrick Palmeri
References:
Bautista et al., 2003A&A...403..339B 2003A&A...403..339B
Palmeri et al., 2003A&A...403.1175P 2003A&A...403.1175P
(End) Patrick Palmeri [NASA/GSFC], Patricia Bauer [CDS] 28-Nov-2003