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J/A+AS/103/57    Ion-atom collisions in Sun atmosphere          (Mihajlov+ 1994)
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Spectral coefficients of emission and absorption due to ion-atom radiation
collisions in solar atmosphere
     Mihajlov A.A., Dimitrijevic M.S., Ignjatovic L.J.M, Djuric Z.
    <Astron. Astrophys. Suppl. Ser. 103, 57 (1994)>
    =1994A&AS..103...57M
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ADC_Keywords: Sun; Atomic physics
Keywords: sun: atmosphere - radiation mechanisms: thermal - atomic data -
               atomic processes

Abstract:
   Spectral coefficients of spontaneous emission and absorption (for 365nm <=
   {lambda} <= 820nm range) due to ion-atom radiation processes H^+^ + H(1s)
   <--> H^+^_2_(1{SIGMA}_g_) and H^+^ + H(1s) <--> H(1s) +H^+^ are presented.
   Calculations have been performed within semiclassical approach for standard
   solar photosphere and chromosphere models. The presented numerical results
   enable the inclusion of considered ion-atom radiative processes in the
   optical depth calculation for the layers mentioned. These results might be
   of interest as well for other astrophysical plasmas with dominant hydrogen
   component and temperatures around 6000 K.

File Summary:
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 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
table1a.dat     64         45    Basic plasma parameters for solar photospheric
                                  model of Maltby et al. (1986), as a function
                                  of height.
table1b.dat     64         29    Basic plasma parameters for solar chromospheric
                                  model of Vernazza et al. (1981) (model C)
table2a.dat     59         45    Emissivity as a function of wavelength and
                                  height for solar photospheric model of
                                  Maltby et al. (1986).
table2b.dat     59         29    Emissivity as a function of wavelength and
                                  height for solar chromospheric model of
                                  Vernazza et al. (1981)
table3a.dat     59         45    Spectral absorption coefficient as a function
                                  of wavelength and height for solar
                                  photospheric model of Maltby et al. (1986).
table3b.dat     59         29    Spectral absorption coefficient as a function
                                  of wavelength and height for solar
                                  chromospheric model of Vernazza et al. (1981)
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Byte-by-byte Description of file: table1a.dat table1b.dat
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   Bytes Format  Units   Label    Explanations
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   5- 10  F6.1   km      h        Height
  14- 19  F6.1   K       T        Plasma temperature
  22- 32  E11.4  cm-3    Ne       Electron density
  34- 44  E11.4  cm-3    Nth      Total hydrogen density
  46- 55  E10.3  ---     eta_e1   (N(H+)/NE)*(N(H)/Ni) ratio (1)
  57- 66  E10.3  ---     eta_ea   N(H+)/Ne ratio (1)
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Note (1):
      N(H+) is the proton density,
      Ni is the total density of positive atomic ions and
      N(H) is the atom (H(1s)) density
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Byte-by-byte Description of file: table2a.dat table2b.dat
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   Bytes Format  Units       Label    Explanations
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   1-  6  F6.1   km          h        Height
   7- 15  E9.3   W/cm3/nm    e365     Emissivity at  365 nm
  16- 24  E9.3   W/cm3/nm    e400     Emissivity at  400 nm
  25- 33  E9.3   W/cm3/nm    e500     Emissivity at  500 nm
  34- 42  E9.3   W/cm3/nm    e600     Emissivity at  600 nm
  43- 51  E9.3   W/cm3/nm    e700     Emissivity at  700 nm
  52- 60  E9.3   W/cm3/nm    e820     Emissivity at  820 nm
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Byte-by-byte Description of file: table3a.dat table3b.dat
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   Bytes Format  Units   Label    Explanations
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   1-  6  F6.1   km      h        Height
   7- 15  E9.3   cm-1    K365     Spectral absorption coefficient at 365 nm
  16- 24  E9.3   cm-1    K400     Spectral absorption coefficient at 400 nm
  25- 33  E9.3   cm-1    K500     Spectral absorption coefficient at 500 nm
  34- 42  E9.3   cm-1    K600     Spectral absorption coefficient at 600 nm
  43- 51  E9.3   cm-1    K700     Spectral absorption coefficient at 700 nm
  52- 60  E9.3   cm-1    K820     Spectral absorption coefficient at 820 nm
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(End)                                    Francois Ochsenbein [CDS]   17-Nov-1993