HNC

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	1.70e-09	1.91e-10
Mathis	1.13e-09	1.57e-10
4000K	4.33e-11	7.85e-16
10000K	7.07e-10	1.30e-11
20000K	1.48e-09	1.91e-10
Lyman-alpha	1.38e-09	0.00e+00
Solar	1.04e-10	1.45e-11
TW-Hya	1.75e-09	7.52e-11
Cosmic ray UV	1.43e-13	1.49e-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	0.53	2.36	[Download]	[Download]
Mathis	1.86	2.69	0.53	2.37	[Download]	[Download]
4000K	1.61	2.35	0.62	2.11	[Download]	[Download]
10000K	1.72	2.50	0.58	2.23	[Download]	[Download]
20000K	1.84	2.65	0.53	2.34	[Download]	[Download]
Lyman-alpha	2.11	2.97	0.58	2.70	[Download]	[Download]
Solar	1.85	2.68	0.53	2.36	[Download]	[Download]
TW-Hya	1.95	2.79	0.55	2.49	[Download]	[Download]

Photoionisation

Radiation	γE2	γexp	k0fit	γfit	Line data	Dust data
ISRF	3.08	4.15	0.51	3.82	[Download]	[Download]
Mathis	3.10	4.17	0.51	3.83	[Download]	[Download]
4000K	3.00	4.05	0.52	3.72	[Download]	[Download]
10000K	3.07	4.14	0.51	3.80	[Download]	[Download]
20000K	3.10	4.17	0.51	3.83	[Download]	[Download]
Lyman-alpha	-	-	-	-
Solar	3.25	4.34	0.49	3.99	[Download]	[Download]
TW-Hya	3.18	4.26	0.50	3.91	[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.]