25-05-2011
(C) Johan Albrecht Schmidt
email: johanalbrechtschmidt@gmail.com

This folder contains 6 data files in the ASCII format. Each file contains calculated state specific N2O cross sections. The total cross section, the fractionation constants and other quantities can be derived from this data. The cross section are given in units of cm^2.

Other data and the various scripts and programs used to generate this data is available from the corresponding author upon request.

The total cross section for a given isotope can be calculated using,

	sigma(E_ph;T) = sum_i ( w_i(T) * sigma_i(E_ph) )

where,

	w_i(T) = d_i * exp(-E_i/(k_B*T)) / Q(T)
	Q(T) = sum_i ( d_i * exp(-E_i/(k_B*T)) )

and

sigma_i(E_ph) are state specific cross sections given in the data files and d_i and E_i are given in the tables below.

Vibrational energies in cm-1:
---------------------------------------------------------------
		(0,0,0)	(0,1,0)	(0,2,0)	(0,3,0)	(1,0,0)	(1,1,0)
14N14N16O	2388.0	2957.8	3536.2	4115.8	3679.5	4246.1
14N14N17O	2372.7	2940.1	3513.9	4089.9	3644.4	4210.0
14N14N18O	2358.9	2924.2	3493.4	4066.0	3613.1	4178.1
14N15N16O	2350.0	2906.3	3474.9	4043.5	3636.2	4187.5
15N14N16O	2364.9	2931.3	3504.6	4080.1	3642.1	4205.9
15N15N16O	2326.7	2879.5	3443.3	4008.0	3598.6	4146.6
---------------------------------------------------------------

Degeneracy factor (d=1+v_2):
---------------------------------------------------------------
	(0,0,0)	(0,1,0)	(0,2,0)	(0,3,0)	(1,0,0)	(1,1,0)
d	1	2	3	4	1	2
---------------------------------------------------------------	


Good luck!

Sincerely,
Johan Albrecht Schmidt

