First Spectra of Chlorine, Bromine, and Iodine in the 4-μm Region*

Curtis J. Humphreys; Edward Paul; Lennart Minnhagen

doi:10.1364/JOSA.61.000110

Journal of the Optical Society of America
Vol. 61,
Issue 1,
pp. 110-114
(1971)
•https://doi.org/10.1364/JOSA.61.000110

First Spectra of Chlorine, Bromine, and Iodine in the 4-μm Region

Curtis J. Humphreys, Edward Paul, and Lennart Minnhagen

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Curtis J. Humphreys, Edward Paul, and Lennart Minnhagen, "First Spectra of Chlorine, Bromine, and Iodine in the 4-μm Region*," J. Opt. Soc. Am. 61, 110-114 (1971)

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Abstract

A description of the spectra of the halogens, Cl i, Br i, and I i, in the 4-μm region, is presented. The observed transitions consist almost exclusively of the 4f–5g transitions. Essentially pure pair coupling is realized in the instance of the g levels. The analysis is based on theoretical energy expressions, and the agreement between observed and calculated energy-level distributions is demonstrated.

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Relative intensity	Wavelength Air (Å)	Wavenumber (cm⁻¹)	Classification
70	39 603.79	2524.32	$(³ P_{2}) 4 f {[4]}_{4 \frac{1}{2}} - (³ P_{2}) 5 g {[5]}_{5 \frac{1}{2}}$
80	39 615.48	2523.58	$(³ P_{2}) 4 f {[4]}_{3 \frac{1}{2}} - (³ P_{2}) 5 g {[5]}_{4 \frac{1}{2}}$
70^b	39 716.04	2517.19	$(³ P_{2}) 4 f {[3]}_{3 \frac{1}{2}, 2 \frac{1}{2}} - (³ P_{2}) 5 g {[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$
18	39 744.11	2515.41	$(³ P_{1}) 4 f {[2]}_{1 \frac{1}{2}} - (³ P_{1}) 5 g {[3]}_{2 \frac{1}{2}}$
20	39 750.83	2514.98	$(³ P_{1}) 4 f {[2]}_{2 \frac{1}{2}} - (³ P_{1}) 5 g {[3]}_{3 \frac{1}{2}}$
40	39 875.33	2507.13	$(³ P_{1}) 4 f {[4]}_{4 \frac{1}{2}} - (³ P_{1}) 5 g {[5]}_{5 \frac{1}{2}}$
25	39 881.09	2506.77	$(³ P_{1}) 4 f {[4]}_{3 \frac{1}{2}} - (³ P_{1}) 5 g {[5]}_{4 \frac{1}{2}}$
35	39 985.68	2500.21	$(³ P_{0}) 4 f {[3]}_{3 \frac{1}{2}, 2 \frac{1}{2}} - (³ P_{0}) 5 g {[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$
30	40 085.59	2493.98	$(³ P_{2}) 4 f {[2]}_{1 \frac{1}{2}} - (³ P_{2}) 5 g {[3]}_{2 \frac{1}{2}}$
25	40 089.57	2493.73	$(³ P_{2}) 4 f {[2]}_{2 \frac{1}{2}} - (³ P_{2}) 5 g {[3]}_{3 \frac{1}{2}}$
100	40 171.21	2488.67	$(³ P_{2}) 4 f {[5]}_{5 \frac{1}{2}, 4 \frac{1}{2}} - (³ P_{2}) 5 g {[6]}_{6 \frac{1}{2}, 5 \frac{1}{2}}$
25 ur	40 310.52	2480.07	$(³ P_{1}) 4 f {[3]}_{3 \frac{1}{2}, 2 \frac{1}{2}} - (³ P_{1}) 5 g {[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$
25 ur	40 335.56	2478.53	$(³ P_{2}) 4 f {[5]}_{5 \frac{1}{2}, 4 \frac{1}{2}} - (³ P_{2}) 5 g {[5]}_{5 \frac{1}{2}, 4 \frac{1}{2}}$
15	40 532.16	2466.50	$(³ P_{2}) 4 f {[1]}_{1 \frac{1}{2}, \frac{1}{2}} - (³ P_{2}) 5 g {[2]}_{2 \frac{1}{2}, 1 \frac{1}{2}}$

Relative intensity	Wavelength Air (Å)	Wavenumber (cm⁻¹)	Classification
70	39 317.60	2542.70	$(³ P_{2}) 4 f {[4]}_{4 \frac{1}{2}} - (³ P_{2}) 5 g {[5]}_{5 \frac{1}{2}}$ ^a
45	39 341.75	2541.14	${[4]}_{3 \frac{1}{2}} - {[5]}_{4 \frac{1}{2}}$
35	39 490.74	2531.55	${[3]}_{2 \frac{1}{2}} - {[4]}_{3 \frac{1}{2}}$
55	39 495.50	2531.24	${[3]}_{3 \frac{1}{2}} - {[4]}_{4 \frac{1}{2}}$
20	39 578.41	2525.94	${[2]}_{1 \frac{1}{2}} - {[3]}_{2 \frac{1}{2}}$
20	39 583.05	2525.65	$(³ P_{1}) {[4]}_{4 \frac{1}{2} (3 \frac{1}{2})} - (³ P_{1}) {[5]}_{5 \frac{1}{2} (4 \frac{1}{2})}$
25	39 693.50	2518.62	$(³ P_{2}) {[2]}_{2 \frac{1}{2}} - (³ P_{2}) {[3]}_{3 \frac{1}{2}}$
120	39 964.36	2501.55	${[5]}_{5 \frac{1}{2}, 4 \frac{1}{2}} - {[6]}_{6 \frac{1}{2}, 5 \frac{1}{2}}$
10	40 406.39	2474.18	${[1]}_{\frac{1}{2}} - {[2]}_{1 \frac{1}{2}}$
15	40 414.15	2473.71	${[1]}_{1 \frac{1}{2}} - {[2]}_{2 \frac{1}{2}}$

Relative intensity	Wavelength Air (Å)	Waven umber (cm⁻¹)	Classification
3?	38 624.60	2588.32	$(³ P_{2}) 4 f {[3]}_{2 \frac{1}{2}} - (³ P_{2}) 5 g {[3]}_{2 \frac{1}{2}}$ ^a
190	38 727.61	2581.43	${[4]}_{4 \frac{1}{2}} - {[5]}_{5 \frac{1}{2}}$
210	38 739.40	2580.65	${[4]}_{3 \frac{1}{2}} - {[5]}_{4 \frac{1}{2}}$
			${[3]}_{2 \frac{1}{2}} - {[4]}_{3 \frac{1}{2}}$
90	38 830.82	2574.57	${[3]}_{3 \frac{1}{2}} - {[4]}_{4 \frac{1}{2}}$
5	39 234.88	2548.06	${[2]}_{1 \frac{1}{2}} - {[2]}_{1 \frac{1}{2}}$
7	39 277.09	2545.32	${[2]}_{2 \frac{1}{2}} - {[2]}_{2 \frac{1}{2}}$
25	39 375.85	2538.94	${[2]}_{1 \frac{1}{2}} - {[3]}_{2 \frac{1}{2}}$
140	39 395.70	2537.66	${[5]}_{5 \frac{1}{2}} - {[6]}_{6 \frac{1}{2}}$
125	39 406.47	2536.96	${[5]}_{4 \frac{1}{2}} - {[6]}_{5 \frac{1}{2}}$
40	39 424.16	2535.82	${[2]}_{2 \frac{1}{2}} - {[3]}_{3 \frac{1}{2}}$
6	39 577.08	2525.87	${[5]}_{5 \frac{1}{2}} - {[5]}_{5 \frac{1}{2}}$
6	39 587.14	2525.18	${[5]}_{4 \frac{1}{2}} - {[5]}_{4 \frac{1}{2}}$
7	39 889.18	2506.26
10	39 982.46	2500.42	${[1]}_{\frac{1}{2}} - {[2]}_{1 \frac{1}{2}}$
20	40 020.12	2498.06	${[1]}_{1 \frac{1}{2}} - {[2]}_{2 \frac{1}{2}}$

	³P₁	³P₀
Cl ii^a	696.1	996.4
Br ii^b	3136.4	3837.5
I ii^c	7087.0	6447.9

		$(³ P_{2}) 5 g {[6]}_{6 \frac{1}{2}, 5 \frac{1}{2}}$ 100 201.31	${[5]}_{5 \frac{1}{2}}$ 100 190.97	${[5]}_{4 \frac{1}{2}}$ 100 190.98	${[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$ 100 191.38	${[3]}_{3 \frac{1}{2}}$ 100 197.67	${[3]}_{2 \frac{1}{2}}$ 100 197.62	${[2]}_{2 \frac{1}{2}, 1 \frac{1}{2}}$ 100.205.72
$(³ P_{2}) 4 f {[5]}_{5 \frac{1}{2}}$	97 712.63	2488.67	2478.53
${[5]}_{4 \frac{1}{2}}$	97 712.66	2488.67	2478.53
${[4]}_{4 \frac{1}{2}}$	97 666.65		2524.32
${[4]}_{3 \frac{1}{2}}$	97 667.40			2523.58
${[3]}_{3 \frac{1}{2}}$	97 674.09				2517.19
${[3]}_{2 \frac{1}{2}}$	97 674.33				2517.19
${[2]}_{2 \frac{1}{2}}$	97 703.94					2493.73
${[2]}_{1 \frac{1}{2}}$	97 703.64						2493.98
${[1]}_{1 \frac{1}{2}}$	97 739.32							2466.50
${[1]}_{\frac{1}{2}}$	97 739.04							2466.50

		$(³ P_{1}) 5 g {[5]}_{5 \frac{1}{2}}$ 100 890.56	${[5]}_{4 \frac{1}{2}}$ 100 890.49	${[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$ 100 899.05	${[3]}_{3 \frac{1}{2}}$ 100 888.41	${[3]}_{2 \frac{1}{2}}$ 100 888.38	$(³ P_{0}) 5 g {[4]}_{4 \frac{1}{2}, 3 \frac{1}{2}}$ 101 193.31
$(³ P_{1}) 4 f {[4]}_{4 \frac{1}{2}}$	98 383.43	2507.13
				(2515.49)^a
${[4]}_{3 \frac{1}{2}}$	98 383.72		2506.77
${[3]}_{3 \frac{1}{2}}$	98 418.89			2480.07
${[3]}_{2 \frac{1}{2}}$	98 419.10			2480.07
${[2]}_{2 \frac{1}{2}}$	98373.43				2514.98
${[2]}_{1 \frac{1}{2}}$	98 372.97					2515.41
$(³ P_{0}) 4 f {[3]}_{3 \frac{1}{2}}$	98 693.01						2500.21
${[3]}_{2 \frac{1}{2}}$	98 693.22						2500.21

		$(³ P_{2}) 5 g {[6]}_{6 \frac{1}{2}}$ 79 899.77	${[6]}_{5 \frac{1}{2}}$ 79 899.74	${[5]}_{5 \frac{1}{2}}$ 79 887.94	${[5]}_{4 \frac{1}{2}}$ 79 887.92	${[4]}_{4 \frac{1}{2}}$ 79 888.03	${[4]}_{3 \frac{1}{2}}$ 79 888.01	${[3]}_{3 \frac{1}{2}}$ 79 895.40	${[3]}_{2 \frac{1}{2}}$ 79 895.60	${[2]}_{2 \frac{1}{2}}$ 79 904.86	${[2]}_{1 \frac{1}{2}}$ 79 904.74
$(³ P_{2}) 4 f {[5]}_{5 \frac{1}{2}}$	77 362.11	2537.66		2525.87
${[5]}_{4 \frac{1}{2}}$	77 362.78		2536.96		2525.18
${[4]}_{4 \frac{1}{2}}$	77 306.49			2581.43		(2581.4)^a
${[4]}_{3 \frac{1}{2}}$	77 307.24				2580.65^b		(2580.6)^a
${[3]}_{3 \frac{1}{2}}$	77 313.46					2574.57		(2581)^a
${[3]}_{2 \frac{1}{2}}$	77 307.36						2580.65^b
${[2]}_{2 \frac{1}{2}}$	77 359.58							2535.82		2545.32
${[2]}_{1 \frac{1}{2}}$	77 356.64								2538.94		2548.06
${[1]}_{1 \frac{1}{2}}$	77 406.77									2498.06
${[1]}_{\frac{1}{2}}$	77 404.35										2500.42

Designation	Level values (cm⁻¹)		Pair splittings

	Theoretical	Observed
$(³ P_{2}) 5 g {[6]}_{6 \frac{1}{2}}$	100 201.35	100 201.31
${[6]}_{5 \frac{1}{2}}$	100 201.35	100 201.31
${[5]}_{5 \frac{1}{2}}$	100 190.89	100 190.97^a	0.01
${[5]}_{4 \frac{1}{2}}$	100 190.89	100 190.98^a	0.01
${[4]}_{4 \frac{1}{2}}$	100 191.30	100.191 38
${[4]}_{3 \frac{1}{2}}$	100 191.30	100.191 38
${[3]}_{3 \frac{1}{2}}$	100 197.49	100 197.67^a	0.05
${[3]}_{2 \frac{1}{2}}$	100 197.49	100 197.62^a	0.05
${[2]}_{2 \frac{1}{2}}$	100 205.79	100 205.72
${[2]}_{1 \frac{1}{2}}$	100 205.79	100 205.72
$(³ P_{1}) 5 g {[5]}_{5 \frac{1}{2}}$	100 890.65	100 890.56^a	0.07
${[5]}_{4 \frac{1}{2}}$	100 890.65	100 890.49^a	0.07
${[4]}_{4 \frac{1}{2}}$	100 899.20	100 899.05
${[4]}_{3 \frac{1}{2}}$	100 899.20	100 899.05
${[3]}_{3 \frac{1}{2}}$	100 888.49	100 888.41^a	0.03
${[3]}_{2 \frac{1}{2}}$	100 888.49	100 888.38^a	0.03
$(³ P_{0}) 5 g {[4]}_{4 \frac{1}{2}}$	101 193.23	101 193.31
${[4]}_{3 \frac{1}{2}}$	101 193.23	101 193.31
F² = 63.3 cm⁻¹
(³P₂) ionization limit = 104 591 cm⁻¹

Abstract

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Tables (10)

Equations (112)

Journal of the Optical Society of America