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J/A+AS/143/483 IRON Project XLII. Fe XXI (Butler+, 2000)
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Atomic data from the IRON Project.
XLII: Electron impact excitation of Fe XXI.
Butler K., Zeippen C.J.
<Astron. Astrophys. Suppl. Ser. 143, 483 (2000)>
=2000A&AS..143..483B
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ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Description:
Effective collision strengths for transitions between 52 fine
structure states calculated in a Breit-Pauli approximation are
provided in ups.dat. Results are provided for logT in the range of
3.0-7.4 in steps of 0.1. The level indices refer to the ordering given
in Table 2 text where the energies are also given. The format is most
easily described by the fortran program provided - readups.f - which
may be used to interface with user programs. Oscillator strengths for
all dipole allowed transitions are provided in osc.dat which are also
indexed with respect to Table 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 39 52 Calculated versus observed target energies
table4.dat 38 34 Transition probabilities for 2s^2^2p^2^-2s2p^3^ lines
osc.dat 35 348 Comparison of oscillator strengths
ups.dat 91 8958 Effective collision strengths
readups.f 60 37 Fortran program to read ups.dat
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See also:
J/A+AS/103/273 : IRON Project II IR collision strengths of C-like ions
J/A+A/283/319 : IRON Project III B-like ions
J/A+AS/108/1 : IRON Project V Collision strengths of O-like ions
J/A+A/293/953 : IRON Project VI Fe II collision strengths
J/A+A/293/967 : IRON Project VII Fe II radiative transitions
J/A+AS/109/193 : IRON Project VIII Electron excitation of Ti-like ions
J/A+AS/119/509 : IRON Project XVII Radiative transition in Fe III
J/A+AS/119/523 : IRON Project XVIII Electron impact for Fe III
J/A+AS/120/361 : IRON Project XIX Fe II radiative transitions
J/A+AS/123/159 : IRON Project XXII C and O radiative rates
J/A+AS/123/575 : IRON Project XXIII Fe XXII excitation rate coefficients
J/A+AS/126/373 : IRON Project XXVII Fe IV collision strengths
J/A+AS/131/499 : IRON Project XXIX Boron isoelectronic sequence
J/A+AS/131/153 : IRON Project XXXI Fe XII electron excitation
J/A+AS/135/347 : IRON Project XXXV Fe XXIV & Fe XXV oscillator strengths
J/A+AS/136/395 : IRON Project XXXVII Fe VI collision strengths
J/A+AS/137/165 : IRON Project XXXVIII Fe XV fine-structure transitions
J/A+AS/144/141 : IRON Project XLIII Fe V transition probabilities
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1,52] Index
4- 10 I7 cm-1 Ecalc ? Calculated target energy
12- 18 I7 cm-1 Eobs Observed (Corliss & Sugar, 1982, J. Phys. Chem.
Ref. Data 11, 135) target energy
20- 39 A20 --- Term Term
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Upper Upper term of transition
10- 17 A8 --- Lower Lower term of transition
20- 28 E9.3 --- TP This work transition probability
30- 38 E9.3 --- TPFFS Froese, Fischer & Saha (1995, Phys. Scr. 32, 181)
transition probability
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Byte-by-byte Description of file: osc.dat
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Bytes Format Units Label Explanations
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2- 5 I4 --- iu [1,52] Index of upper level
6- 9 I4 --- il [1,52] Index of lower level
15- 23 E9.3 --- gf1 Oscillator strength from this work
26- 34 E9.3 --- gf2 Oscillator strength from Aggarwal et al.
(1997ApJS..108..575A)
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Acknowledgements: Keith Butler <butler@usm.uni-muenchen.de>
References:
1993A&A...279..298H : IRON Project I Goal and methods
1994A&AS..107...29S : IRON Project IV Electron excitation of F-like ions
1995A&AS..110..209P : IRON Project IX Electron excitation of Cl-like ion
1995A&AS..111..347G : IRON Project X Si- & S-like ions IR coll. strengths
1996A&AS..115..151S : IRON Project XI Ar VI, K VII & CaVIII fine-structure
1995A&AS..114..367B : IRON Project XII V-like ions electron excitation
1996A&AS..115..551B : IRON Project XIII Ni II & Fe II electron excitation
1996A&A...309..677S : IRON Project XIV Fe XIV fine-structure transition
1996A&AS..118..157K : IRON Project XV He II & Fe XXVI Electron excitation
1996A&AS..119..105B : IRON Project XVI Fe V oscillator strengths
1997A&AS..122..167B : IRON Project XX Fe I oscillator strengths
1997A&AS..122..177P : IRON Project XXI Fe I fine-structure transition
1997A&AS..126..105B : IRON Project XXIV Fe XXIV electron excitation
1998A&AS..127..545B : IRON Project XXV Fe XII electron excitation
1997A&AS..126..365B : IRON Project XXVI Fe IV oscillator strengths
1998A&AS..129..161B : IRON Project XXVIII F-like ions fine-structure trans.
1999A&AS..134..369S : IRON Project XXX P III, S IV & Cl V collision data
1998A&AS..133..245G : IRON Project XXXII Ar III effective collision strength
1999A&AS..135..159M : IRON Project XXXIII Carbon radiative rates
1999A&AS..136..385E : IRON Project XXXIV Fe XVI electron impact excitation
1999A&AS..137..175C : IRON Project XXXVI Fe XXIII electron excitation
1999A&AS..137..529B : IRON Project XXXIX Ni II oscillator strengths
2000A&AS..141..285S : IRON Project XL Fe XIV electron excitation
2000A&AS..142..313B : IRON Project XLI Fe VII electron excitation
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(End) Patricia Bauer [CDS] 04-May-2000