J/A+A/533/A62 Atomic Data for Neutron-Capture Elements. II (Sterling, 2011)
Atomic data for neutron-capture elements.
II. Photoionization and recombination properties of low-charge krypton ions.
Sterling N.C.
<Astron. Astrophys. 533, A62 (2011)>
=2011A&A...533A..62S 2011A&A...533A..62S
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - HII regions - nuclear reactions -
nucleosynthesis, abundances - stars: evolution -
planetary nebulae: general
Abstract:
We present multi-configuration Breit-Pauli distorted-wave
photoionization (PI) cross sections and radiative recombination (RR)
and dielectronic recombination (DR) rate coefficients for the first
six krypton ions. These were calculated with the AUTOSTRUCTURE code,
using semi-relativistic radial wavefunctions in intermediate coupling.
Description:
'Direct' and 'Direct and resonant' photoionization cross sections are
tabulated for neutral and the first five ions of Kr. Note that
photoexcitation-autoionization resonances are not included in these
data files. Names of the files are given by xdp.dat
(xp.dat), e.g., kr2+xdp.dat (kr2+xp.dat) for photoionization of
Kr2+ ions.
Comments are indicated by '#' in the first column of a lines. The
first two lines of a file are header information indicating the number
of photon targets (ground state and metastable states in the ground
configuration, with 1 the lowest energy) and number of energies. The
photoionization cross section of each state is preceded by a comment
giving the energy above the ground state (large negative number
corresponds to 0), the first energy relative to that state (always a
large negative number corresponding to zero), and the energy-order of
that state (1 = ground state, 2 = first excited state, etc.).
All energies are reported in Rydbergs, and cross sections in megabarns
(10^-18 cm^2).
Total and partial final state resolved dielectronic recombination rate
coefficients are tabulated for the first six ions of Kr, in the ADAS
adf09 and adf48 formats. Names of the files are given by
adf09_ (adf48_), e.g., adf09_kr2+ (adf48kr2+)
gives dielectronic recombination data for Kr2+ forming Kr+.
The format of these files is complex, and beyond the scope of this
README file. The reader is referred to
http://amdpp.phys.strath.ac.uk/tamoc/RR/RR_web/appxa-09.pdf for a
complete description of the adf09 and adf48 files format.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 234 21 Configuration-interaction expansions used for each
Kr ion
kr0_xdp.dat 30 45001 Direct Kr0+ photoionization cross section
kr1_xdp.dat 30 90002 Direct Kr1+ photoionization cross section
kr2_xdp.dat 30 225005 Direct Kr2+ photoionization cross section
kr3_xdp.dat 30 225005 Direct Kr3+ photoionization cross section
kr4_xdp.dat 30 225005 Direct Kr4+ photoionization cross section
kr5_xdp.dat 30 180004 Direct Kr5+ photoionization cross section
kr0_xp.dat 78 48874 Direct and resonant Kr0+ photoionization cross section
kr1_xp.dat 78 97573 Direct and resonant Kr+ photoionization cross section
kr2_xp.dat 78 251105 Direct and resonant Kr2+ photoionization cross section
kr3_xp.dat 78 266003 Direct and resonant Kr3+ photoionization cross section
kr4_xp.dat 78 278912 Direct and resonant Kr4+ photoionization cross section
kr5_xp.dat 78 104530 Direct and resonant Kr5+ photoionization cross section
adf/* . 12 Total and partial final state resolved dielectronic
recombination rate coefficients for six ions of Kr,
in the ADAS adf09 and adf48 formats
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See also:
J/A+A/529/A147 : Atomic data for neutron-capture elements. I. (Sterling+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Ion Ion designation
6- 11 A6 --- Set Configuration set (Small, Medium or Large)
13- 15 I3 --- Nlev Number of levels
17-234 A218 --- Conf Configurations
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Byte-by-byte Description of file (#): *xdp.dat
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Bytes Format Units Label Explanations
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3- 16 E14.8 Ry EP Photon energy
21- 30 E10.4 Mbarn Xint Photoionization cross section
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Byte-by-byte Description of file (#): *xp.dat
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Bytes Format Units Label Explanations
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3- 16 E14.8 Ry EP Photon energy relative to the ground state
19- 32 E14.8 Ry E(N0) Photon energy relative to the initial state
34- 48 E15.8 Ry E0 Electron energy relative to the ground state
50- 64 E15.8 Ry E Electron energy relative to the initial state
69- 78 E10.4 Mbarn Xint Photoionization cross section
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Acknowledgements:
N. Sterling, sterling(at)pa.msu.edu
(End) Patricia Vannier [CDS] 18-Jul-2011