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Detailed Description of J/A+AS/126/373
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This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.
J/A+AS/126/373 IRON Project XXVII. Fe IV collision strengths (Zhang+ 1997)
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Atomic data from the Iron Project. XXVII. Electron impact excitation collision
strengths and rate coefficients for Fe IV
Zhang H.L., Pradhan A.K.
<Astron. Astrophys. Suppl. Ser. 126, 373 (1997)>
=1997A&AS..126..373Z (SIMBAD/NED BibCode)
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ADC_Keywords: Atomic physics
Keywords: atomic processes - planetary nebulae: general - H II regions
Abstract:
Collision strengths and maxwellian-averaged rate coefficients have
been calculated for 8771 non-vanishing transitions among 140 fine
structure levels, dominated by the configurations 3d5, 3d44s, and
3d44p in Fe IV. Collision strengths are calculated using the
R-matrix method with a 49 term close-coupling target expansion for
electron energies up to 15 rydbergs. Rate coefficients are tabulated
for a wide range of temperatures in which Fe IV is abundant in plasma
sources. A brief discussion of the calculations and sample results are
given. The present rates for Fe IV are expected to find applications
in spectral diagnostics of a variety of astrophysical sources.
File Summary:
FileName Lrecl Records Explanations
× ReadMe 80 . This file
× levels3 43 140 Levels for table3
× table3 80 23203 Maxwellian-averaged collision strengths
Upsilon(i,j) for the 8771 transitions between
the 140 levels at T=2000-500000K in Fe IV
× prog.f 74 36 Fortran code to read the data file table3
Structure of file table3:
--------------------------------------------------------------------------------
Records Format Explanations
--------------------------------------------------------------------------------
1 - 4 20A4 Title
5 3I5 Nuclear charge number Z, number of electrons
per ion N and the number of levels
6 - 145 I5,5A4,2X,I3,1PE11.4 Level index, configuration and term, total
angular momentum J, and the energy
146 2I8 Number of transitions NTR and
number of temperatures NTEMP
147 - 1243 8(2i4,2x) Transition keys ((i,j),i=1,j-1),j=2,ntr)),
with i and j being the initial and the
final levels.
1244 F8.0 Temperature T = 2000 K
1245 - 2341 8(1PE9.2,1X) Upsilons for the corresponding transitions
specified in Record 147 - 1243.
2342 - 23203 F8/8((1PE9.2,1X) Repeating the above for 19 more temperatures:
4000, 6000, 8000, 10000, 12000, 15000,
17000, 20000, 25000, 30000, 40000, 50000,
60000, 70000, 85000, 100000, 200000, 300000,
500000
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/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 electron excitation
J/A+AS/143/483 : IRON Project XLII Fe XXI electron impact excitation
J/A+AS/144/141 : IRON Project XLIII Fe V transition probabilities
J/A+AS/147/111 : IRON Project XLIV Fe VI trans. prob. & line ratio
J/A+AS/147/253 : IRON Project XLV Ar XIII, Fe XXI trans. probabilities
J/A+A/365/268 : IRON Project XLVII Ni III electron impact excitation
J/A+A/372/1078 : IRON Project XLIX Fe XX electron impact excitation
J/A+A/372/1083 : IRON Project L Fe XIX electron impact excitation
J/A+A/394/753 : IRON Project LI Fe IX electron impact excitation
J/A+A/408/789 : IRON Project LIII Fe XVII transition probabilities
J/A+A/413/779 : IRON Project LIV Fe XX transition probabilities
J/A+A/420/763 : IRON Project LV Ni II electron impact excitation
J/A+A/437/345 : IRON Project LIX Fe IV transition probabilities
J/A+A/448/779 : IRON Project LXI Fe IV radiative transitions
J/A+A/457/721 : IRON Project LXII Fe XVIII allowed and forbidden trans.
J/A+A/466/763 : IRON Project LXIII Fe19+ electron impact excitation
Byte-by-byte Description of file: levels3
Bytes Format Units Label Explanations
3- 5 I3 --- Index Level index
9- 19 A11 --- Conf Electronic configuration
23- 25 A3 --- Term Electronic term
29- 30 I2 --- J Total angular momentum
33- 42 E10.4 Ry E Theoretical energy
Acknowledgements: Honglin Zhang
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
2001A&A...365..258P : IRON Project XLVI Fe X electron excitation
2003A&A...401.1177C : IRON Project LII Ni24 electron excitation
2005A&A...436.1123M : IRON Project LVII Ni IV radiative transition rates
2005A&A...433..717S : IRON Project LVIII Fe XII electron impact excitation
2006A&A...446..361W : IRON Project LX Fe17+ electron impact excitation
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(End) Patricia Bauer [CDS] 12-Sep-1997
