Access to Astronomical Catalogues

VI/51               Collisional Excitation Rates of Formaldehyde  (Green 1991)
Collisional Excitation of Formaldehyde in "Hot" Interstellar Molecular Regions
     Green S.
    <Astrophys. J. Suppl. Ser. 76, 979 (1991)>
    =1991ApJS...76..979G
ADC_Keywords: Excitation rates ; Interstellar medium


Description:
    Earlier calculations for rotational excitation of formaldehyde H2CO
    collisions with He atoms are extended to include the 81 lowest
    rotational levels and kinetic temperatures to 300K.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1o           19       40   Rotational Levels for ortho-H2CO
table1p           19       41   Rotational Levels for para-H2CO
ortho            220      780   Rate constants for ortho-H2CO (Table 3)
para             220      820   Rate constants for  para-H2CO (Table 2)


Byte-by-byte Description of file: table1o table1p

   Bytes Format  Units   Label    Explanations

   2-  3  I2     ---     Level    Rotational level number
   5-  6  I2     ---     J        quantum number
       8  I1     ---     K        quantum number
      10  A1     ---     Parity   [LU ]
  12- 19  F8.4   cm-1    E        Rotational energy


Byte-by-byte Description of file: ortho para

   Bytes Format  Units   Label    Explanations

   4-  5  I2     ---     i        Initial H2CO rotor level
   9- 10  I2     ---     f        Final H2CO rotor level
  13- 20  E8.2   cm3/s   R10      Rate constant, temperature 10K
  23- 30  E8.2   cm3/s   R15      Rate constant, temperature 15
  33- 40  E8.2   cm3/s   R20      Rate constant, temperature 20
  43- 50  E8.2   cm3/s   R30      Rate constant, temperature 30K
  53- 60  E8.2   cm3/s   R40      Rate constant, temperature 40K
  63- 70  E8.2   cm3/s   R50      Rate constant, temperature 50K
  73- 80  E8.2   cm3/s   R60      Rate constant, temperature 60K
  83- 90  E8.2   cm3/s   R70      Rate constant, temperature 70K
  93-100  E8.2   cm3/s   R80      Rate constant, temperature 80K
 103-110  E8.2   cm3/s   R90      Rate constant, temperature 90K
 113-120  E8.2   cm3/s   R100     Rate constant, temperature 100K
 123-130  E8.2   cm3/s   R120     Rate constant, temperature 120K
 133-140  E8.2   cm3/s   R140     Rate constant, temperature 140K
 143-150  E8.2   cm3/s   R160     Rate constant, temperature 160K
 153-160  E8.2   cm3/s   R180     Rate constant, temperature 180K
 163-170  E8.2   cm3/s   R200     Rate constant, temperature 200K
 173-180  E8.2   cm3/s   R220     Rate constant, temperature 220K
 183-190  E8.2   cm3/s   R240     Rate constant, temperature 240K
 193-200  E8.2   cm3/s   R260     Rate constant, temperature 260K
 203-210  E8.2   cm3/s   R280     Rate constant, temperature 280K
 213-220  E8.2   cm3/s   R300     Rate constant, temperature 300K

(End)                                    Francois Ochsenbein [CDS]   03-Feb-1994