photon energy	wavel.	cross sect.
(eV)		(nm)	(cm^2 molecule^-1)
------------------------------------------
2450.91		0.5059	1.22e-20
2454.37		0.5052	1.11e-20
2457.13		0.5046	1.29e-20
2460.65		0.5039	1.59e-20
2463.68		0.5032	1.77e-20
2466.72		0.5026	2.24e-20
2469.58		0.5020	2.92e-20
2470.97		0.5018	4.47e-20
2472.21		0.5015	7.01e-20
2472.89		0.5014	1.04e-19
2473.15		0.5013	1.48e-19
2473.45		0.5013	1.80e-19
2473.81		0.5012	2.18e-19
2474.23		0.5011	2.51e-19
2474.53		0.5010	2.88e-19
2474.89		0.5010	3.21e-19
2475.14		0.5009	3.54e-19
2476.26		0.5007	3.79e-19
2477.01		0.5005	3.55e-19
2477.26		0.5005	3.21e-19
2477.62		0.5004	2.89e-19
2477.86		0.5004	2.52e-19
2478.33		0.5003	2.15e-19
2478.52		0.5002	1.78e-19
2478.77		0.5002	1.51e-19
2478.92		0.5002	1.28e-19
2479.23		0.5001	1.06e-19
2479.71		0.5000	8.63e-20
2480.52		0.4998	7.23e-20
2481.95		0.4995	7.42e-20
2482.52		0.4994	8.90e-20
2482.81		0.4994	1.11e-19
2482.99		0.4993	1.30e-19
2483.28		0.4993	1.52e-19
2483.54		0.4992	1.93e-19
2484.23		0.4991	2.30e-19
2484.64		0.4990	1.96e-19
2484.99		0.4989	1.52e-19
2485.25		0.4989	1.30e-19
2485.84		0.4988	1.08e-19
2485.91		0.4987	1.27e-19
2487.19		0.4985	1.44e-19
2489.16		0.4981	1.32e-19