CH3CHO

Cross sections

Cross section figure.


[An explanation of the cross sections in this database]
[All cross sections — variable wavelength scale]
[All cross sections — variable wavelength scale in binary hdf5 format]
[All cross sections — 0.1nm wavelength scale]
[Photodissociation cross section — separate lines and continuum]
[Photoionisation cross section — separate lines and continuum]
[Download cross section figure as pdf]

Photodissociation and ionisation rates (s-1)

Radiation Photodissociation Photoionisation
ISRF 1.99e-09 8.34e-10
Mathis 1.30e-09 6.05e-10
4000K 3.78e-09 8.25e-14
10000K 1.58e-09 9.37e-11
20000K 1.89e-09 6.83e-10
Lyman-alpha 3.19e-09 1.93e-10
Solar 4.82e-09 2.36e-11
TW-Hya 2.66e-09 2.82e-10
Cosmic ray UV 2.24e-13 6.92e-14

[An explanation of the interstellar photo rates.]
[An explanation of the cosmic-ray induced photo rates.]
[An explanation of the radiation fields listed below.]
[Download all rates in a csv file.]

Shielding functions and fitted constants

Photodissociation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 1.69 2.46 0.59 2.19 [Download] [Download]
Mathis 1.69 2.46 0.58 2.19 [Download] [Download]
4000K 1.10 1.68 0.70 1.50 [Download] [Download]
10000K 1.56 2.30 0.61 2.05 [Download] [Download]
20000K 1.66 2.42 0.59 2.16 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.09 1.67 0.70 1.50 [Download] [Download]
TW-Hya 1.84 2.66 0.54 2.36 [Download] [Download]

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 2.49 3.42 0.50 3.08 [Download] [Download]
Mathis 2.50 3.44 0.50 3.09 [Download] [Download]
4000K 2.24 3.13 0.56 2.84 [Download] [Download]
10000K 2.40 3.32 0.52 3.00 [Download] [Download]
20000K 2.52 3.45 0.49 3.10 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 2.43 3.34 0.45 2.95 [Download] [Download]
TW-Hya 2.32 3.22 0.50 2.87 [Download] [Download]

[An explanation of the shielding functions and parameterisations.]
[Download all γ factors in a csv file.]
[Download all dust and line shielding functions in a zip file.]