The Al v spectrum has been observed between 90 and 3000 Å. The classification of 140 new lines above 500 Å has led to the determination of the 2s22p43s, 3p, 3d, and 4s configurations. Intercombination lines are observed between terms of different multiplicity or different parentage. Below 300 Å, new measurements are given for the ground-term transitions to even levels and three new transitions from the 2s 2p6 2S1/2 level are observed. Parametric calculations of these configurations support the level assignments. Graphs are given for comparision of the 2s22p43d configuration along the F i isoelectronic sequence up to Cl ix. Some changes of previous identifications are suggested in S viii and Cl ix.
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
The term designations are defined in Table III. The levels of the 2p43p configuration are odd. All others are even.
This line was previously observed by Söderqvist (Ref. 1). The identification is new.
The wave number of this line determines the position of one of the combining levels.
The calculated wavelength and wave number are given because the line is masked.
This line was measured on triggered-spark spectrograms only.
This blend was partly resolved on one spectrogram.
The calculated wavelengths given in this column have an absolute uncertainty of ±0.002 Å and are internally consistent to 0.0005 Å.
The level designations are defined in Table III. The 2p, 3p′, and 3p″ levels are odd; all others are even.
These two wave numbers determine the splitting of the ground term 2p2P° and the position of the sp6 2S1/2 level.
This line was observed but not identified by Söderqvist (Ref. 1).
This line is newly observed.
This line was used by Artru and Kaufman (Ref. 3) for location of the 3d4D level.
This line was not remeasured in the present work. The observed wavelength is from Ferner (Ref. 2).
Table III
Energy levels of Al v.
Energy
Int.
Config.
Desig.
J
0
−3442
2s22p5
2p2P°
3/2
3 442
1/2
358 816
2s2p6
sp6 2S
1/2
751 840.1
−2149.4
2s22p4(3P)3s
3s4P
5/2
753 989.5
−1247.9
3/2
755 237.4
1/2
764 250.4
−2541.8
3s2P
3/2
766 792.2
1/2
796 622.4
−30.5
2s22p4(1D)3s
3s′ 2D
5/2
796 652.9
3/2
843 914
2s22p4(1S)3s
3s″ 2S
1/2
817 364.9
2s22p4(3P)3p
3p4P°
5/2
818 136.3
−771.4
3/2
818 961.6
−825.3
1/2
825 757
3p4D°
7/2
827 025.0
−1268
5/2
828 035.1
−1010.1
3/2
828 586.1
−551.0
1/2
832 017.6
−2067.1
3p2D°
5/2
834 084.7
3/2
835 033.3
1904.1
3p2P°
1/2
836 937.4
3/2
837 646.2
3p4S°
3/2
838 117.8
3p2S°
1/2
865 368.9
416.0
2s22p4(1D)3p
3p′ 2F°
5/2
865 784.9
7/2
874 026.0
254.1
3p′ 2D°
3/2
874 280.1
5/2
883 559
−1635
3p′ 2P°
3/2
885 194
1/2
917 403
60
2s22p4(1S)3p
3p″ 2P°
1/2
917 463
3/2
910 974.6
−354.6
2s22p4(3P)3d
3d4D
7/2
911 329.2
−450.8
5/2
911 780.0
−382.7
3/2
912 162.7
1/2
917 612
−1145
3d4F
9/2
918 757
−1144
7/2
919 901
−774
5/2
920 675
3/2
921 075
−1535
3d2F
7/2
922 610
5/2
921 415.4
717.4
3d4P
1/2
922 132.8
1094.4
3/2
923 227.2
5/2
925 432
956
3d2D
3/2
926 388
5/2
925 894
2514
3d2P
1/2
928 408
3/2
955 751
4
2s22p4(1D)3d
3d′ 2G
7/2
955 755
9/2
960 415
3d′ 2S
1/2
960 868
−770
3d′ 2P
3/2
961 638
1/2
962 631
−688
3d′ 2D
5/2
963 319
3/2
963 354
−5
3d′ 2F
7/2
963 359
5/2
1 007 146
−144
2s22p4(1S)3d
3d″ 2D
5/2
1 007 290
3/2
1 001 087
−1840
2s22p4(3P)4s
4s4P
5/2
1 002 927
−1522
3/2
1 004 449
1/2
1 005 790
−2283
4s2P
3/2
1 008 073
1/2
1 043 490
−5
2s22p4(1D)4s
4s′ 2D
5/2
1 043 495
3/2
1 089 957
2s22p4(1S)4s
4s″ 2S
1/2
Table IV
Parameter values for the 2s2p6 2s22p43s, 2s22p43d, and 2s22p4 configurations of Al v and comparison with HF values. (The rms deviation of the fit is 181 cm−1.)
Parameter
Fitted values (cm−1)
Fitted/HF
2s2p6
Eav
363 313 ± 316
0.97
2s22p43s
Eav
776 272 ± 68
1.01
F2(2p, 2p)
148 115 ± 319
0.85
α(2p, 2p)
990 ± 32
⋯
G1(2p, 3s)
12 012 ± 167
1.00
ζ2p
2 592 ± 158
1.04
2s22p43d
Eav
939 129 ± 68
1.01
F2(2p, 2p)
147 499 ± 224
0.85
α(2p, 2p)
1 027 ± 21
⋯
F2(2p, 3d)
27 142 ± 322
1.07
G1(2p, 3d)
15 516 ± 279
0.90
G3(2p, 3d)
8 412 ± 505
0.86
D1(2p, 3d)
1 198 ± 376
⋯
X2(2p, 3d)
−2 339 ± 357
⋯
ζ2p
2 585 ± 127
1.04
ζ3d
13 fixed
2s22p44s
Eav
1 022 641 ± 69
1.01
F2(2p, 2p)
146 787 ± 317
0.84
α(2p, 2p)
1 093 ± 325
⋯
G1(2p, 4s)
3 792 ± 202
1.03
ζ2p
2 598 ± 180
1.04
Configuration-interaction parameters
R1(2p2p, 2s3d)
−59 451 ± 1960
1.08
R1(2p2p, 2s3s)
27 324 fixed
R1(2p2p, 2s4s)
13 991 fixed
R2(2p3s, 2p3d)
13 687 fixed
R1(2p3s, 3d2p)
−2 687 fixed
R2(2p4s, 2p3d)
4 630 fixed
R1(2p4s, 3d2p)
−1 110 fixed
Table V
Calculated LS composition of the 2p43d levels of Al v (components with percentage lower than 4% are omitted).
J
Experimental energy
Expt–Calc
Composition
1/2
912 162.7
−55
99% 3d 4D
921 415.4
61
99% 3d 4P
925 894
125
91% 3d 2P + 8% 3d′ 2P
960 415
−39
88% 3d′ 2S + 10% 3d′ 2P
961 638
289
82% 3d′ 2P + 10% 3d′ 2S + 7% 3d2P
3/2
911 780.0
−77
98% 3d4D
920 675
74
98% 3d4F
922 132.8
52
97% 3d4P
925 432
−94
75% 3d2D + 17% 3d2P + 4% 3d′ 2D
928 408
17
76% 3d2P + 18% 3d2D+ 5% 3d′ 2P
960 868
427
94% 3d′ 2P + 6% 3d2P
963 319
−514
94% 3d′ 2D + 5% 3d2D
1 007 290
−10
98% 3d″ 2D
5/2
911 329.2
−104
97% 3d4D
919 901
63
91% 3d4F + 6% 3d2F
922 610
49
79% 3d2F + 7% 3d4F + 7% 3d2D
923 227.2
65
89% 3d4P + 9% 3d2F
926 388
−220
87% 3d2D + 6% 3d2F
962 631
−288
61% 3d′ 2D + 36% 3d′ 2F
963 359
−76
63% 3d′ 2F + 34% 3d′ 2D
1 007 146
16
98% 3d″ 2D
7/2
910 974.6
−115
98% 3d4D
918 757
38
82% 3d4F + 17% 3d2F
921 075
108
83% 3d2F + 16% 3d4F
955 751
114
100% 3d′ 2G
963 354
4
100% 3d′ 2F
9/2
917 612
−4
100% 3d4F
955 755
92
100% 3d′ 2G
Table VI
Parameter values for the 2p43p configuration of Al v and comparison with HF values (the rms deviation of the fit is 107 cm−1).
Parameter
Fitted value (cm−1)
Fitted/HF
Eav
848 831 ± 25
1.01
F2(2p, 2p)
147 398 ± 140
0.85
α(2p, 2p)
1 010 ± 14
⋯
F2(2p, 3p)
32 813 ± 167
1.21
G0(2p, 3p)
9 746 ± 31
0.94
G2(2p, 3p)
11 232 ± 174
1.04
ζ2p
2 537 ± 82
1.02
ζ3p
338 ± 66
1.17
D1(2p, 3p)
2 590 ± 134
⋯
Table VII
Calculated LS composition of the 2p43p levels of Al v (components with percentage lower than 4% are omitted).
The term designations are defined in Table III. The levels of the 2p43p configuration are odd. All others are even.
This line was previously observed by Söderqvist (Ref. 1). The identification is new.
The wave number of this line determines the position of one of the combining levels.
The calculated wavelength and wave number are given because the line is masked.
This line was measured on triggered-spark spectrograms only.
This blend was partly resolved on one spectrogram.
The calculated wavelengths given in this column have an absolute uncertainty of ±0.002 Å and are internally consistent to 0.0005 Å.
The level designations are defined in Table III. The 2p, 3p′, and 3p″ levels are odd; all others are even.
These two wave numbers determine the splitting of the ground term 2p2P° and the position of the sp6 2S1/2 level.
This line was observed but not identified by Söderqvist (Ref. 1).
This line is newly observed.
This line was used by Artru and Kaufman (Ref. 3) for location of the 3d4D level.
This line was not remeasured in the present work. The observed wavelength is from Ferner (Ref. 2).
Table III
Energy levels of Al v.
Energy
Int.
Config.
Desig.
J
0
−3442
2s22p5
2p2P°
3/2
3 442
1/2
358 816
2s2p6
sp6 2S
1/2
751 840.1
−2149.4
2s22p4(3P)3s
3s4P
5/2
753 989.5
−1247.9
3/2
755 237.4
1/2
764 250.4
−2541.8
3s2P
3/2
766 792.2
1/2
796 622.4
−30.5
2s22p4(1D)3s
3s′ 2D
5/2
796 652.9
3/2
843 914
2s22p4(1S)3s
3s″ 2S
1/2
817 364.9
2s22p4(3P)3p
3p4P°
5/2
818 136.3
−771.4
3/2
818 961.6
−825.3
1/2
825 757
3p4D°
7/2
827 025.0
−1268
5/2
828 035.1
−1010.1
3/2
828 586.1
−551.0
1/2
832 017.6
−2067.1
3p2D°
5/2
834 084.7
3/2
835 033.3
1904.1
3p2P°
1/2
836 937.4
3/2
837 646.2
3p4S°
3/2
838 117.8
3p2S°
1/2
865 368.9
416.0
2s22p4(1D)3p
3p′ 2F°
5/2
865 784.9
7/2
874 026.0
254.1
3p′ 2D°
3/2
874 280.1
5/2
883 559
−1635
3p′ 2P°
3/2
885 194
1/2
917 403
60
2s22p4(1S)3p
3p″ 2P°
1/2
917 463
3/2
910 974.6
−354.6
2s22p4(3P)3d
3d4D
7/2
911 329.2
−450.8
5/2
911 780.0
−382.7
3/2
912 162.7
1/2
917 612
−1145
3d4F
9/2
918 757
−1144
7/2
919 901
−774
5/2
920 675
3/2
921 075
−1535
3d2F
7/2
922 610
5/2
921 415.4
717.4
3d4P
1/2
922 132.8
1094.4
3/2
923 227.2
5/2
925 432
956
3d2D
3/2
926 388
5/2
925 894
2514
3d2P
1/2
928 408
3/2
955 751
4
2s22p4(1D)3d
3d′ 2G
7/2
955 755
9/2
960 415
3d′ 2S
1/2
960 868
−770
3d′ 2P
3/2
961 638
1/2
962 631
−688
3d′ 2D
5/2
963 319
3/2
963 354
−5
3d′ 2F
7/2
963 359
5/2
1 007 146
−144
2s22p4(1S)3d
3d″ 2D
5/2
1 007 290
3/2
1 001 087
−1840
2s22p4(3P)4s
4s4P
5/2
1 002 927
−1522
3/2
1 004 449
1/2
1 005 790
−2283
4s2P
3/2
1 008 073
1/2
1 043 490
−5
2s22p4(1D)4s
4s′ 2D
5/2
1 043 495
3/2
1 089 957
2s22p4(1S)4s
4s″ 2S
1/2
Table IV
Parameter values for the 2s2p6 2s22p43s, 2s22p43d, and 2s22p4 configurations of Al v and comparison with HF values. (The rms deviation of the fit is 181 cm−1.)
Parameter
Fitted values (cm−1)
Fitted/HF
2s2p6
Eav
363 313 ± 316
0.97
2s22p43s
Eav
776 272 ± 68
1.01
F2(2p, 2p)
148 115 ± 319
0.85
α(2p, 2p)
990 ± 32
⋯
G1(2p, 3s)
12 012 ± 167
1.00
ζ2p
2 592 ± 158
1.04
2s22p43d
Eav
939 129 ± 68
1.01
F2(2p, 2p)
147 499 ± 224
0.85
α(2p, 2p)
1 027 ± 21
⋯
F2(2p, 3d)
27 142 ± 322
1.07
G1(2p, 3d)
15 516 ± 279
0.90
G3(2p, 3d)
8 412 ± 505
0.86
D1(2p, 3d)
1 198 ± 376
⋯
X2(2p, 3d)
−2 339 ± 357
⋯
ζ2p
2 585 ± 127
1.04
ζ3d
13 fixed
2s22p44s
Eav
1 022 641 ± 69
1.01
F2(2p, 2p)
146 787 ± 317
0.84
α(2p, 2p)
1 093 ± 325
⋯
G1(2p, 4s)
3 792 ± 202
1.03
ζ2p
2 598 ± 180
1.04
Configuration-interaction parameters
R1(2p2p, 2s3d)
−59 451 ± 1960
1.08
R1(2p2p, 2s3s)
27 324 fixed
R1(2p2p, 2s4s)
13 991 fixed
R2(2p3s, 2p3d)
13 687 fixed
R1(2p3s, 3d2p)
−2 687 fixed
R2(2p4s, 2p3d)
4 630 fixed
R1(2p4s, 3d2p)
−1 110 fixed
Table V
Calculated LS composition of the 2p43d levels of Al v (components with percentage lower than 4% are omitted).
J
Experimental energy
Expt–Calc
Composition
1/2
912 162.7
−55
99% 3d 4D
921 415.4
61
99% 3d 4P
925 894
125
91% 3d 2P + 8% 3d′ 2P
960 415
−39
88% 3d′ 2S + 10% 3d′ 2P
961 638
289
82% 3d′ 2P + 10% 3d′ 2S + 7% 3d2P
3/2
911 780.0
−77
98% 3d4D
920 675
74
98% 3d4F
922 132.8
52
97% 3d4P
925 432
−94
75% 3d2D + 17% 3d2P + 4% 3d′ 2D
928 408
17
76% 3d2P + 18% 3d2D+ 5% 3d′ 2P
960 868
427
94% 3d′ 2P + 6% 3d2P
963 319
−514
94% 3d′ 2D + 5% 3d2D
1 007 290
−10
98% 3d″ 2D
5/2
911 329.2
−104
97% 3d4D
919 901
63
91% 3d4F + 6% 3d2F
922 610
49
79% 3d2F + 7% 3d4F + 7% 3d2D
923 227.2
65
89% 3d4P + 9% 3d2F
926 388
−220
87% 3d2D + 6% 3d2F
962 631
−288
61% 3d′ 2D + 36% 3d′ 2F
963 359
−76
63% 3d′ 2F + 34% 3d′ 2D
1 007 146
16
98% 3d″ 2D
7/2
910 974.6
−115
98% 3d4D
918 757
38
82% 3d4F + 17% 3d2F
921 075
108
83% 3d2F + 16% 3d4F
955 751
114
100% 3d′ 2G
963 354
4
100% 3d′ 2F
9/2
917 612
−4
100% 3d4F
955 755
92
100% 3d′ 2G
Table VI
Parameter values for the 2p43p configuration of Al v and comparison with HF values (the rms deviation of the fit is 107 cm−1).
Parameter
Fitted value (cm−1)
Fitted/HF
Eav
848 831 ± 25
1.01
F2(2p, 2p)
147 398 ± 140
0.85
α(2p, 2p)
1 010 ± 14
⋯
F2(2p, 3p)
32 813 ± 167
1.21
G0(2p, 3p)
9 746 ± 31
0.94
G2(2p, 3p)
11 232 ± 174
1.04
ζ2p
2 537 ± 82
1.02
ζ3p
338 ± 66
1.17
D1(2p, 3p)
2 590 ± 134
⋯
Table VII
Calculated LS composition of the 2p43p levels of Al v (components with percentage lower than 4% are omitted).