Radiative-Lifetime Measurements for Nitrogen Ions

Eric H. Pinnington; Chii–Chan Lin

doi:10.1364/JOSA.59.000717

Radiative-Lifetime Measurements for Nitrogen Ions

Eric H. Pinnington and Chii–Chan Lin

Journal of the Optical Society of America
Vol. 59,
Issue 6,
pp. 717-722
(1969)
•https://doi.org/10.1364/JOSA.59.000717

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Eric H. Pinnington and Chii–Chan Lin, "Radiative-Lifetime Measurements for Nitrogen Ions," J. Opt. Soc. Am. 59, 717-722 (1969)

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History
- Original Manuscript: October 11, 1968
- Published: June 1, 1969

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Abstract

The beam-foil technique is applied to 17 transitions due to nitrogen ions in the wavelength region 1900–4900 Å Radiative lifetimes are given for the following levels: (3p ¹S, 3p ¹D, 4s ³P⁰, 4f ^1,3F, 4f ³G) for N ii;(3p ⁴P, 3p ²D, 3d ⁴P⁰, 3d ⁴D⁰, 3d ⁴F⁰, 4p ²P⁰, 4f ⁴D, 4f ²F, 4f ²G, 6g ²G) for N iii; (3p ³P⁰) for N iv. These results are compared with previously published data and with values calculated from theoretical wavefunctions.

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Wavelength		Ion	Multiplet number	Upper Energy level		Radiative lifetime (nsec)
obs (±2 Å)	listed (NBS^a,b)	Ion	Multiplet number	(cm⁻¹)	(term)	obs	theor.^c	other
1907	1908.11	N iii	27^a	386 965	4f²F	2.2±0.1	0.91	…
1922	1920.86	N iii	29^a	388 273	4f⁴D	2.2±0.1	0.97	…
1922	1921.49	N iii	29^a	388 311	4f⁴D	2.2±0.1	0.97	…
2065	2063.50	N iii	30^a	388 190	4f²G	2.4±0.1	0.88	…
2065	2063.99	N iii	30^a	388 290	4f²G	2.4±0.1	0.88	…
2247	2247.92	N iii	23^a	311 716	4p²P⁰	3.1±0.3	6.1 (±50%)	1.24^d, 2.6^e
2247	2248.88	N iii	23^a	311 691	4p²P⁰	3.1±0.3	6.1 (±50%)	1.24^d, 2.6^e
2861	2862.26	N iii	26^a	355 214	6g²G	5.8±0.5	…	…
3353	3353.78	N iii	5^b	317 343	3p⁴P	5.8±0.3	5.7	5.71^d, 5.2^e
3353	3354.29	N iii	5^b	317 402	3p⁴P	5.8±0.3	5.7	5.71^d, 5.2^e
3366	3367.36	N iii	5^b	317 402	3p⁴P	5.4±0.3	5.7	5.84^d, 5.2^e
3437	3437.16	N ii	13^b	178 274	3p¹S	5.3±0.6	4.2	4.1^e, 9.4^f
3481	3478.69	N iv	1^b	405 944	3p³P⁰	7.3±0.5	8.6	9.7^d, 8.2^e,
	3482.98			405 909
	3484.90			405 893				8.7^f
3794	3793.87	N iii	11^b	336 246	3d⁴P⁰	3.03±0.08	10.1	1.46^d, 2.9^e
3839	3838.39	N ii	30^b	196 712	4s³P⁰	3.24±0.06	5.0	2.9^e, 3.3^f
								4.0^f
3940	3938.52	N iii	8^b	334 569	3d²D⁰	3.0±0.1	10.4	4.3^e, 3.0^f
3995	3995.00	N ii	12^b	174 213	3p¹D	6.1±0.3	6.3	15.3^f
4041	4041.32	N ii	39^b	211 332	4f³G	5.8±0.1	2.9	5.3^e, 9.0^f
4041	4043.54	N ii	39^b	211 332	4f³G	5.8±0.1	2.9	5.3^e, 9.0^f
4199	4195.70	N iii	6^b	320 977	3p²D	2.3±0.1	10.0	1.7^d, 2.1^e
4199	4200.02	N iii	6^b	321 066	3p²D	2.3±0.1	10.0	1.7^d, 2.1^e
4241	4241.79	N ii	47^b	211 031	4f¹F	59±0.3	4.7	3.5^e
4241	4241.79	N ii	48^b	211 053	4f³F	59±0.3	4.7	3.5^e
4865	4867.18	N iii	9^b	330 397	3d⁴F⁰	16.7±0.7	15.9	16.9^e

Wavelength	Ion	Mean obs	Lifetime (nsec)^a	Theoretical
2247	N iii	2.3±0.6	(3)	6.1
3353	N iii	5.6±0.2	(3)	5.7
3366	N iii	5.5±0.2	(3)	5.7
3437	N ii	4.9±0.7	(3)	4.2
3481	N iv	8.5±0.7	(4)	8.6
3794	N iii	2.5±0.7	(3)	10.1
3839	N ii	3.1±0.2	(3)	5.0
3940	N iii	3.7±0.5	(3)	10.4
3995	N ii	6.5±1.5	(2)	6.3
4041	N ii	5.7±0.4	(3)	2.9
4241	N ii	4.7±1.2	(2)	4.7
4865	N iii	16.8±0.1	(2)	15.9

Wavelength		Ion	Multiplet number	Upper Energy level		Radiative lifetime (nsec)
obs (±2 Å)	listed (NBS^a,b)	Ion	Multiplet number	(cm⁻¹)	(term)	obs	theor.^c	other
1907	1908.11	N iii	27^a	386 965	4f²F	2.2±0.1	0.91	…
1922	1920.86	N iii	29^a	388 273	4f⁴D	2.2±0.1	0.97	…
1922	1921.49	N iii	29^a	388 311	4f⁴D	2.2±0.1	0.97	…
2065	2063.50	N iii	30^a	388 190	4f²G	2.4±0.1	0.88	…
2065	2063.99	N iii	30^a	388 290	4f²G	2.4±0.1	0.88	…
2247	2247.92	N iii	23^a	311 716	4p²P⁰	3.1±0.3	6.1 (±50%)	1.24^d, 2.6^e
2247	2248.88	N iii	23^a	311 691	4p²P⁰	3.1±0.3	6.1 (±50%)	1.24^d, 2.6^e
2861	2862.26	N iii	26^a	355 214	6g²G	5.8±0.5	…	…
3353	3353.78	N iii	5^b	317 343	3p⁴P	5.8±0.3	5.7	5.71^d, 5.2^e
3353	3354.29	N iii	5^b	317 402	3p⁴P	5.8±0.3	5.7	5.71^d, 5.2^e
3366	3367.36	N iii	5^b	317 402	3p⁴P	5.4±0.3	5.7	5.84^d, 5.2^e
3437	3437.16	N ii	13^b	178 274	3p¹S	5.3±0.6	4.2	4.1^e, 9.4^f
3481	3478.69	N iv	1^b	405 944	3p³P⁰	7.3±0.5	8.6	9.7^d, 8.2^e,
	3482.98			405 909
	3484.90			405 893				8.7^f
3794	3793.87	N iii	11^b	336 246	3d⁴P⁰	3.03±0.08	10.1	1.46^d, 2.9^e
3839	3838.39	N ii	30^b	196 712	4s³P⁰	3.24±0.06	5.0	2.9^e, 3.3^f
								4.0^f
3940	3938.52	N iii	8^b	334 569	3d²D⁰	3.0±0.1	10.4	4.3^e, 3.0^f
3995	3995.00	N ii	12^b	174 213	3p¹D	6.1±0.3	6.3	15.3^f
4041	4041.32	N ii	39^b	211 332	4f³G	5.8±0.1	2.9	5.3^e, 9.0^f
4041	4043.54	N ii	39^b	211 332	4f³G	5.8±0.1	2.9	5.3^e, 9.0^f
4199	4195.70	N iii	6^b	320 977	3p²D	2.3±0.1	10.0	1.7^d, 2.1^e
4199	4200.02	N iii	6^b	321 066	3p²D	2.3±0.1	10.0	1.7^d, 2.1^e
4241	4241.79	N ii	47^b	211 031	4f¹F	59±0.3	4.7	3.5^e
4241	4241.79	N ii	48^b	211 053	4f³F	59±0.3	4.7	3.5^e
4865	4867.18	N iii	9^b	330 397	3d⁴F⁰	16.7±0.7	15.9	16.9^e

Wavelength	Ion	Mean obs	Lifetime (nsec)^a	Theoretical
2247	N iii	2.3±0.6	(3)	6.1
3353	N iii	5.6±0.2	(3)	5.7
3366	N iii	5.5±0.2	(3)	5.7
3437	N ii	4.9±0.7	(3)	4.2
3481	N iv	8.5±0.7	(4)	8.6
3794	N iii	2.5±0.7	(3)	10.1
3839	N ii	3.1±0.2	(3)	5.0
3940	N iii	3.7±0.5	(3)	10.4
3995	N ii	6.5±1.5	(2)	6.3
4041	N ii	5.7±0.4	(3)	2.9
4241	N ii	4.7±1.2	(2)	4.7
4865	N iii	16.8±0.1	(2)	15.9

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