J/ApJS/167/343 Plasma Recombination rate coefficients (Bryans+, 2006)
Collisional ionization equilibrium for optically thin plasmas.
I. Updated recombination rate coefficients for bare through Sodium-like ions.
Bryans P., Badnell N.R., Gorczyca T.W., Laming J.M., Mitthumsiri W.,
Savin D.W.
<Astrophys. J. Suppl. Ser., 167, 343-356 (2006)>
=2006ApJS..167..343B 2006ApJS..167..343B
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - plasmas
Abstract:
Reliably interpreting spectra from electron-ionized cosmic plasmas
requires accurate ionization balance calculations for the plasma in
question. However, much of the atomic data needed for these
calculations have not been generated using modern theoretical methods
and are often highly suspect. This translates directly into the
reliability of the collisional ionization equilibrium (CIE)
calculations. We make use of state-of-the-art calculations of
dielectronic recombination (DR) rate coefficients for the hydrogenic
through Na-like ions of all elements from He up to and including Zn.
Where measurements exist, these published theoretical DR data agree
with recent laboratory work to within typically 35% or better at the
temperatures relevant for CIE. We also make use of state-of-the-art
radiative recombination (RR) rate coefficient calculations for the
bare through Na-like ions of all elements from H through to Zn. Here
we present improved CIE calculations for temperatures from 104 to 109
K using our data and the recommended electron impact ionization data
of Mazzotta et al. (1998, Cat. J/A+AS/133/403) for elements up to
and including Ni and Mazzotta (2000, private communication) for Cu and
Zn. DR and RR data for ionization stages that have not been updated
are also taken from these two additional sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 224 1530 H - Zn Collisional Ionization Equilibrium (CIE)
abundances (autostructure-based)
table5.dat 211 357 Mg - Ni Collisional Ionization Equilibrium (CIE)
abundances (FAC-based results)
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See also:
J/A+AS/133/403 : Ionization balance for optically thin plasmas (Mazzotta+ 1998)
J/ApJS/167/334 : Radiative recombination data for plasmas (Badnell+, 2006)
Byte-by-byte Description of file: table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- El Element
4- 7 F4.2 [K] logT [4/9] Log of the electron temperature
9- 14 F6.3 [-] Ab0 ? -Log of the fractional abundance for El (1)
16- 21 F6.3 [-] Ab1 ? -Log of the fractional abundance for El1+ (1)
23- 28 F6.3 [-] Ab2 ? -Log of the fractional abundance for El2+ (1)
30- 35 F6.3 [-] Ab3 ? -Log of the fractional abundance for El3+ (1)
37- 42 F6.3 [-] Ab4 ? -Log of the fractional abundance for El4+ (1)
44- 49 F6.3 [-] Ab5 ? -Log of the fractional abundance for El5+ (1)
51- 56 F6.3 [-] Ab6 ? -Log of the fractional abundance for El6+ (1)
58- 63 F6.3 [-] Ab7 ? -Log of the fractional abundance for El7+ (1)
65- 70 F6.3 [-] Ab8 ? -Log of the fractional abundance for El8+ (1)
72- 77 F6.3 [-] Ab9 ? -Log of the fractional abundance for El9+ (1)
79- 84 F6.3 [-] Ab10 ? -Log of the fractional abundance for El10+ (1)
86- 91 F6.3 [-] Ab11 ? -Log of the fractional abundance for El11+ (1)
93- 98 F6.3 [-] Ab12 ? -Log of the fractional abundance for El12+ (1)
100-105 F6.3 [-] Ab13 ? -Log of the fractional abundance for El13+ (1)
107-112 F6.3 [-] Ab14 ? -Log of the fractional abundance for El14+ (1)
114-119 F6.3 [-] Ab15 ? -Log of the fractional abundance for El15+ (1)
121-126 F6.3 [-] Ab16 ? -Log of the fractional abundance for El16+ (1)
128-133 F6.3 [-] Ab17 ? -Log of the fractional abundance for El17+ (1)
135-140 F6.3 [-] Ab18 ? -Log of the fractional abundance for El18+ (1)
142-147 F6.3 [-] Ab19 ? -Log of the fractional abundance for El19+ (1)
149-154 F6.3 [-] Ab20 ? -Log of the fractional abundance for El20+ (1)
156-161 F6.3 [-] Ab21 ? -Log of the fractional abundance for El21+ (1)
163-168 F6.3 [-] Ab22 ? -Log of the fractional abundance for El22+ (1)
170-175 F6.3 [-] Ab23 ? -Log of the fractional abundance for El23+ (1)
177-182 F6.3 [-] Ab24 ? -Log of the fractional abundance for El24+ (1)
184-189 F6.3 [-] Ab25 ? -Log of the fractional abundance for El25+ (1)
191-196 F6.3 [-] Ab26 ? -Log of the fractional abundance for El26+ (1)
198-203 F6.3 [-] Ab27 ? -Log of the fractional abundance for El27+ (1)
205-210 F6.3 [-] Ab28 ? -Log of the fractional abundance for El28+ (1)
212-217 F6.3 [-] Ab29 ? -Log of the fractional abundance for El29+ (1)
219-224 F6.3 [-] Ab30 ? -Log of the fractional abundance for El30+ (1)
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Note (1):
* For H we use the RR rate coefficients of Badnell (2006, Atomic and
Molecular Diagnostic Processes in Plasmas,
http://amdpp.phys.strath.ac.uk/tamoc/RR/ ) and EII rate coefficients
of Mazzotta et al. (1998 Cat. J/A+AS/133/403)
* For He-Mg, same as H but also using the DR rate coefficients of
Badnell (2006, Atomic and Molecular Diagnostic Processes in Plasmas,
http://amdpp.phys.strath.ac.uk/tamoc/DR/ ).
* For Al-Ni, same as He-Mg but also using the DR and RR rate
coefficients of Mazzotta et al. (1998, Cat. J/A+AS/133/403) for ions
not calculated by Badnell (2006,
http://amdpp.phys.strath.ac.uk/tamoc/RR/ and
http://amdpp.phys.strath.ac.uk/tamoc/DR/ )
* For Cu-Zn, we use the DR rate coefficients of Badnell (2006,
(http://amdpp.phys.strath.ac.uk/tamoc/RR/) for H-like through Na-like
ions, RR rate coefficients of Badnell (2006,
http://amdpp.phys.strath.ac.uk/tamoc/DR/) for bare through Na-like
ions, DR and RR rate coefficients of Mazzotta (priv. com.) for all
other ions, and the EII rate coefficients of Mazzotta (priv. com.).
* For Mg we use the DR rate coefficients of Gu (2003ApJ...590.1131G 2003ApJ...590.1131G,
2004ApJS..153..389G 2004ApJS..153..389G) for H-like through Na-like ions, RR rate
coefficients of Gu (2003ApJ...589.1085G 2003ApJ...589.1085G) for bare through F-like ions,
RR rate coefficient of Mazzotta et al. (1998, J/A+AS/133/403) for
the Na-like ion, and EII rate coefficients of Mazzotta et al. (1998,
J/A+AS/133/403).
* For Si-Ni, same as Mg but also using the DR and RR rate coefficients
of Mazzotta et al. (1998, J/A+AS/133/403) for ions not calculated by
Gu (2003ApJ...589.1085G 2003ApJ...589.1085G, 2003ApJ...590.1131G 2003ApJ...590.1131G, 2004ApJS..153..389G 2004ApJS..153..389G)
Fractional abundances are cut off at 10-15. For ease of machine
readability, values less than 10-15 are given -log10 values of 15.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-May-2008