Refractive Dispersion of Nitrogen in the Vacuum Ultraviolet*

P. G. Wilkinson

doi:10.1364/JOSA.50.001002

Journal of the Optical Society of America
Vol. 50,
Issue 10,
pp. 1002-1005
(1960)
•https://doi.org/10.1364/JOSA.50.001002

Refractive Dispersion of Nitrogen in the Vacuum Ultraviolet

P. G. Wilkinson

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P. G. Wilkinson, "Refractive Dispersion of Nitrogen in the Vacuum Ultraviolet*," J. Opt. Soc. Am. 50, 1002-1005 (1960)

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Abstract

The refractive dispersion of nitrogen has been measured for the first time in the 1649 A to 2042 A region by means of a high-dispersion vacuum spectrograph. The data fit the following equation to ±0.13%:

n - 1 = \frac{6.3622 \cdot 10^{4}}{45.989 \cdot 10^{8} - ν^{2}} + \frac{32.453 \cdot 10^{6}}{1065.11 \cdot 10^{8} - ν^{2}} .

The resonance frequencies and oscillator strengths obtained from this equation have no real significance because the data are too inaccurate and were obtained at wavelengths much longer than the nearest allowed transition. Improved measurements at shorter wavelengths would be desirable.

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Equations (14)

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Intensity	Wavelength (air)	Emitter
35	2397.8848	Ge I
500	2417.3672	Ge I
40	2436.4120	Ge I
150	2467.3681	Ge I
300	2497.9625	Ge I
500	2533.2305	Ge I
100	2556.2979	Ge I
200	2589.1878	Ge I
70	2677.9065	W
400	2691.3411	Ge I
400	2709.6237	Ge I
50	2729.772	Ge II
25	2703.1849	Cu II
150	2740.4264	Ge I
400	2754.5877	Ge I
40	2793.9249	Ge I
40	2794.225	Ne II
60	2955.722	Ne II
40	2963.246	Ne II
30	2967.285	Hg I
35	3001.660	Ne II
25	3027.010	Ne II
40	3034.464	Ne II
20	3047.637	Ne II
30	3057.524	Ne I

Intensity	Wavelength (vacuum)	Emitter	n−1×10⁷	Obs-calc^a×10⁷
25	2042.484	?	3424	17
35	2019.7198	Ge I	3417	1
20	2007.688	Ge II	3411	−10
20	1988.2669	Ge I	3435	7
20	1970.8796	Ge I	3435	−1
20	1962.0129	Ge I	3444	4
25	1955.1150	Ge I	3448	4
25	1944.730	Ge I	3445	−5
25	1938.890	Ge II	3455	7
20	1938.007	Ge II	3448	−5
35	1930.036	Ne II	3451	−7
50	1874.2545	Ge I	3489	−5
25	1845.8723	Ge I	3516	1
25	1824.2994	Ge I	3538	1
30	1785.0457	Ge I	3568	−6
25	1758.2788	Ge I	3605	−3
30	1750.0430	Ge I	3616	−4
30	1746.0614	Ge I	3631	5
40	1742.1950	Ge I	3633	0
30	1716.7844	Ge I	3670	−5
25	1691.0899	Ge I	3730	2
200	1649.1918	Ge II	3834	−3

Intensity	Wavelength (air)	Emitter
35	2397.8848	Ge I
500	2417.3672	Ge I
40	2436.4120	Ge I
150	2467.3681	Ge I
300	2497.9625	Ge I
500	2533.2305	Ge I
100	2556.2979	Ge I
200	2589.1878	Ge I
70	2677.9065	W
400	2691.3411	Ge I
400	2709.6237	Ge I
50	2729.772	Ge II
25	2703.1849	Cu II
150	2740.4264	Ge I
400	2754.5877	Ge I
40	2793.9249	Ge I
40	2794.225	Ne II
60	2955.722	Ne II
40	2963.246	Ne II
30	2967.285	Hg I
35	3001.660	Ne II
25	3027.010	Ne II
40	3034.464	Ne II
20	3047.637	Ne II
30	3057.524	Ne I

Intensity	Wavelength (vacuum)	Emitter	n−1×10⁷	Obs-calc^a×10⁷
25	2042.484	?	3424	17
35	2019.7198	Ge I	3417	1
20	2007.688	Ge II	3411	−10
20	1988.2669	Ge I	3435	7
20	1970.8796	Ge I	3435	−1
20	1962.0129	Ge I	3444	4
25	1955.1150	Ge I	3448	4
25	1944.730	Ge I	3445	−5
25	1938.890	Ge II	3455	7
20	1938.007	Ge II	3448	−5
35	1930.036	Ne II	3451	−7
50	1874.2545	Ge I	3489	−5
25	1845.8723	Ge I	3516	1
25	1824.2994	Ge I	3538	1
30	1785.0457	Ge I	3568	−6
25	1758.2788	Ge I	3605	−3
30	1750.0430	Ge I	3616	−4
30	1746.0614	Ge I	3631	5
40	1742.1950	Ge I	3633	0
30	1716.7844	Ge I	3670	−5
25	1691.0899	Ge I	3730	2
200	1649.1918	Ge II	3834	−3

Abstract

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Tables (2)

Equations (14)

Journal of the Optical Society of America