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J/A+AS/119/523      IRON project XVIII. Fe III data                 (Zhang 1996)
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Atomic data from the Iron Project. XVIII. Electron impact excitation collision
strengths and rate coefficients for Fe III.
       Zhang H.L.
      <Astron. Astrophys. Suppl. Ser. 119, 523 (1996)>
      =1996A&AS..119..523Z      (SIMBAD/NED BibCode)
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ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes

Description:
    The effective  collision strengths  upsilon coefficients  are provided
    for  FeIII (Z=26, 24 electrons) over the 23871 transitions between the
    219 levels summarized in file 'levels', for the set of temperatures:
      3000,  5000,  7000, 10000, 12000, 15000, 17000, 20000, 25000,
     30000, 35000, 40000, 45000, 50000, 60000, 70000, 80000, 90000, and
    100000 K.

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records   Explanations
--------------------------------------------------------------------------------
ReadMe          80          .   This file
levels          72        219   Levels
prog.f          66         36   Fortran code to read the data file ups
ups             79      62909  *Effective collision strengths Upsilon for Fe III
--------------------------------------------------------------------------------
Note on usp: 
   Structure of file ups
------------------------------------------------------------------------------
     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-  224  I5,5A5,I3,1PE11.4 Level index, configuration and term, total
                                  angular momentum J, and the energy
                                  (same as file 'levels')
         225          I8        Number of transitions NTR
   226- 3209    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.
        3210        F8.0        Temperature T = 1000 K
  3211- 6194  8(1PE9.2,1X)      Upsilons for the corresponding transitions
                                  specified in Record 226 - 3209.
  6195- 62909 F8.0/8(1PE9.2,1X) Repeating the above at records 3210-6194
                                for 19 more temperatures:
                                  3000, 5000, 7000, 10000, 12000, 15000, 17000,
                                  20000, 25000, 30000, 35000, 40000, 45000,
                                  50000, 60000, 70000, 80000, 90000,100000
------------------------------------------------------------------------------

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. FeII collision strengths
    J/A+A/293/967  : IRON Project VII. FeII 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/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 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

Byte-by-byte Description of file: levels
--------------------------------------------------------------------------------
   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   3-  5  I3    ---     Index     Level index
   9- 20  A12   ---     Conf      Electronic configuration
  23- 26  A4    ---     Term      Electronic term
  30- 31  I2    ---     J         Angular momentum
  33- 43  E11.4 Ry      E         Theoretical energy
--------------------------------------------------------------------------------

Acknowledgements: Honglin Zhang <zhang@payne.mps.ohio-state.edu>

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 collision strengths
  1996A&AS..115..151S : IRON Project XI. Ar VI, K VII and Ca VIII 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. Electron excitation of He II & Fe XXVI
  1996A&AS..119..105B : IRON Project XVI. Fe V oscillator strengths
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(End)                                         Patricia Bauer [CDS]   25-Mar-1996