SO₂

Cross sections

[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	2.47e-09	1.31e-10
Mathis	1.69e-09	1.23e-10
4000K	4.00e-09	2.73e-16
10000K	1.75e-09	8.36e-12
20000K	2.22e-09	1.45e-10
Lyman-alpha	6.08e-09	0.00e+00
Solar	5.55e-09	1.66e-11
TW-Hya	4.33e-09	8.41e-11
Cosmic ray UV	2.70e-13	1.05e-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	1.94	2.77	0.52	2.45	[Download]	[Download]
Mathis	1.94	2.78	0.52	2.45	[Download]	[Download]
4000K	1.71	2.46	0.63	2.23	[Download]	[Download]
10000K	1.71	2.47	0.60	2.22	[Download]	[Download]
20000K	1.89	2.72	0.53	2.40	[Download]	[Download]
Lyman-alpha	2.11	2.97	0.58	2.70	[Download]	[Download]
Solar	1.74	2.51	0.63	2.27	[Download]	[Download]
TW-Hya	2.03	2.88	0.56	2.59	[Download]	[Download]

Photoionisation

Radiation	γE2	γexp	k0fit	γfit	Line data	Dust data
ISRF	3.16	4.25	0.51	3.92	[Download]	[Download]
Mathis	3.17	4.26	0.51	3.93	[Download]	[Download]
4000K	3.14	4.22	0.52	3.89	[Download]	[Download]
10000K	3.16	4.25	0.51	3.91	[Download]	[Download]
20000K	3.17	4.25	0.51	3.92	[Download]	[Download]
Lyman-alpha	-	-	-	-
Solar	3.33	4.44	0.49	4.09	[Download]	[Download]
TW-Hya	3.31	4.41	0.49	4.05	[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.]