Continuous Emission Spectra of Rare Gases in the Vacuum Ultraviolet Region. II. Neon and Helium

Y. Tanaka; A. S. Jursa; F. J. LeBlanc

doi:10.1364/JOSA.48.000304

Journal of the Optical Society of America
Vol. 48,
Issue 5,
pp. 304-308
(1958)
•https://doi.org/10.1364/JOSA.48.000304

Continuous Emission Spectra of Rare Gases in the Vacuum Ultraviolet Region. II. Neon and Helium

Y. Tanaka, A. S. Jursa, and F. J. LeBlanc

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Y. Tanaka, A. S. Jursa, and F. J. LeBlanc, "Continuous Emission Spectra of Rare Gases in the Vacuum Ultraviolet Region. II. Neon and Helium," J. Opt. Soc. Am. 48, 304-308 (1958)

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Abstract

The experimental conditions for, and the characteristics and origin of the recently found Ne continuum are described. The 600 A band and the continuum of helium were reinvestigated in relation to the diffuse bands and continua of the other rare gases. It is suggested that both probably originate from the transition A¹∑_u⁺−X¹∑_g⁺ of He₂, because of the similarity of their characteristics to those of the resonance lines and continua of the other rare gases, Ne included.

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A			Ne			He
λ(A)	I	ν(cm⁻¹)	λ(A)	I	ν(cm⁻¹)	λ(A)	I	ν(cm⁻¹)
1068	10	93 630	745	10	134 200	603	10	165 800
1070	8	93 460	747	8	133 900	605	9	165 300
1072	7	93 280	750	6	133 300	608	7	164 500
1075	6	93 020	754	5	132 600	613	4	163 100
1079	5	92 680	760	3	131 600	619	3	161 600
1082	4	92 420	767	2	130 400	627	2	159 500
1086	3	92 080	774	2	129 200	636	1	157 200
1092	2	91 580	783	2	127 700	648	1	154 300
1097	2	91 160	787	1	127 100	662	0	151 100
1103	2	90 660	796	1	125 600	686	2	145 800
1110	2	90 090	811	1	123 300	708	3	141 200
1118	2	89 450	829	0	120 600	^b648	5	154300
1125	1	88 890	^b756	3	132 300	^b662	5	151 100
1134	1	88 180	^b759	2	131 800
1146	0	87 260	^b776	2	128 900
^b1126	2	88 810	^b779	5	128 400
^b1138	3	87 870	^b788	4	126 900
^b1142	2	87 570	^b790	3	126 600
^b1147	3	87 180

Present		Tanaka^b	Possible transition
Uncondensed discharge	Condensed discharge	Condensed discharge	Possible transition
793 A	793 A	818 A	A¹∑_u⁺−X¹∑_g⁺
685 A	^b685 A		H¹∑_u⁺−X¹∑_g⁺
710 A	698 A	675 A	D¹∑_u⁺−X¹∑_g⁺
663 A			5sσ¹∑−X¹∑_g⁺
			or
			M(¹∑_u⁺,¹π_u)−X¹∑_g⁺
	^b648 A		Difficult to identify. Probably originate in higher members of nsσ¹∑_u⁺.
	^b619 A

A			Ne			He
λ(A)	I	ν(cm⁻¹)	λ(A)	I	ν(cm⁻¹)	λ(A)	I	ν(cm⁻¹)
1068	10	93 630	745	10	134 200	603	10	165 800
1070	8	93 460	747	8	133 900	605	9	165 300
1072	7	93 280	750	6	133 300	608	7	164 500
1075	6	93 020	754	5	132 600	613	4	163 100
1079	5	92 680	760	3	131 600	619	3	161 600
1082	4	92 420	767	2	130 400	627	2	159 500
1086	3	92 080	774	2	129 200	636	1	157 200
1092	2	91 580	783	2	127 700	648	1	154 300
1097	2	91 160	787	1	127 100	662	0	151 100
1103	2	90 660	796	1	125 600	686	2	145 800
1110	2	90 090	811	1	123 300	708	3	141 200
1118	2	89 450	829	0	120 600	^b648	5	154300
1125	1	88 890	^b756	3	132 300	^b662	5	151 100
1134	1	88 180	^b759	2	131 800
1146	0	87 260	^b776	2	128 900
^b1126	2	88 810	^b779	5	128 400
^b1138	3	87 870	^b788	4	126 900
^b1142	2	87 570	^b790	3	126 600
^b1147	3	87 180

Present		Tanaka^b	Possible transition
Uncondensed discharge	Condensed discharge	Condensed discharge	Possible transition
793 A	793 A	818 A	A¹∑_u⁺−X¹∑_g⁺
685 A	^b685 A		H¹∑_u⁺−X¹∑_g⁺
710 A	698 A	675 A	D¹∑_u⁺−X¹∑_g⁺
663 A			5sσ¹∑−X¹∑_g⁺
			or
			M(¹∑_u⁺,¹π_u)−X¹∑_g⁺
	^b648 A		Difficult to identify. Probably originate in higher members of nsσ¹∑_u⁺.
	^b619 A

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