C₂H

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	1.58e-09	6.20e-10
Mathis	1.04e-09	4.86e-10
4000K	4.42e-11	4.39e-15
10000K	6.76e-10	4.52e-11
20000K	1.34e-09	5.83e-10
Lyman-alpha	5.08e-10	0.00e+00
Solar	6.44e-11	1.40e-11
TW-Hya	8.34e-10	1.48e-10
Cosmic ray UV	1.11e-13	4.09e-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	1.85	2.67	0.57	2.38	[Download]	[Download]
Mathis	1.86	2.67	0.57	2.39	[Download]	[Download]
4000K	1.60	2.33	0.62	2.09	[Download]	[Download]
10000K	1.74	2.52	0.58	2.25	[Download]	[Download]
20000K	1.83	2.64	0.57	2.35	[Download]	[Download]
Lyman-alpha	2.11	2.97	0.58	2.70	[Download]	[Download]
Solar	1.76	2.56	0.56	2.27	[Download]	[Download]
TW-Hya	1.94	2.77	0.56	2.48	[Download]	[Download]

Photoionisation

Radiation	γE2	γexp	k0fit	γfit	Line data	Dust data
ISRF	2.98	4.02	0.51	3.68	[Download]	[Download]
Mathis	3.00	4.04	0.51	3.70	[Download]	[Download]
4000K	2.85	3.87	0.52	3.54	[Download]	[Download]
10000K	2.96	3.99	0.51	3.65	[Download]	[Download]
20000K	3.00	4.04	0.51	3.71	[Download]	[Download]
Lyman-alpha	-	-	-	-
Solar	3.04	4.08	0.51	3.75	[Download]	[Download]
TW-Hya	2.99	4.03	0.51	3.70	[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.]