Victor Kaufman, Marie-Christine Artru, and Wan-U Lydia Brillet, "Revised analysis of the 2p53s, 3p, 3d, and 4s configurations of triply ionized aluminum (Al iv)," J. Opt. Soc. Am. 64, 197-201 (1974)
The spectrum of triply ionized aluminum (Al iv) was observed between 700 and 2200 Å. About 60 new lines have been identified as transitions between the 2p53s, 3p, 3d, and 4s configurations. The ground-state combinations have been remeasured (124–161 Å). Energies and designations are given for all levels of these configurations, and several changes and additions to the previous analysis have been made. Results of calculations of these configurations are included to support the level identifications. An isoelectronic comparison is discussed.
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This line, which is blended or masked, cannot be measured properly. Wavelength and wave number given here are calculated.
The wave number of this line determines the position of the 3d3F4 level.
Table II
Measurement of Al iv ground-state transitions.
Intensity
Wavelength (Å)
Wave number obs. (cm−1)
Upper level
obs.
calc.
700
161.688
0.688
618 475
3s
3P1°
800
160.074
0.072
624 711
1P1°
150
131.647
0.649
759 607
3d
3P1°
blended Al v
130.39
0.398
766 930
3D1°
700
129.730
0.729
770 832
1P1°
300
124.550
0.547
802 890
4s
[3/2]1°
400
124.030
0.033
806 257
[1/2]1°
Table III
Energy levels of Al+.
Energy (cm−1)
Interval
Designation
J
0
2p6 1S
0
616 644.2
2p53s3P°
2
618 473.9
−1829.7
1
620 060.1
−1586.2
0
624 717.5
2p53s1P°
1
671 632.5
2p53p3S
1
680 859.8
2p53p3D
3
681 683.3
−823.5
2
682.981.8
−1298.5
1
685 728.2
2p53p1D
2
686 959.1
2p53p1P
1
687 830.5
2p53p3P
2
688 649.4
−818.9
1
688 309.6
339.8
0
714 096.9
2p53p1S
0
759 193.4
2p53d3P°
0
759 596.8
403.4
1
760 472.3
875.5
2
761 688.4
2p53d3F°
4
762 272.5
−584.1
3
763 613.6
−1341.1
2
764 297.1
2p53d1F°
3
766 880.8
2p53d3D°
1
767 750.6
869.8
2
767 345.5
−405.1
3
767 035.7
2p53d1D°
2
770 836.9
2p53d1P°
1
801 882.3
−1025.2
2p5(2P3/2°)4s[3/2]°
2
802 907.5
1
805 309.7
925.2
2p5(2P1/2°)4s[1/2]°
0
806 234.9
1
Table IV
Parameter values for the 2p53d configuration of Al iv.
The 3p3S1 level is not included in the fit; for nine experimental levels (five terms) the rms deviation is 64 cm−1.
For 10 experimental levels (six terms) the rms deviation is 62 cm−1.
Table VII
Main LS compositions of the 2p53p levels of Al iv.
This line, which is blended or masked, cannot be measured properly. Wavelength and wave number given here are calculated.
The wave number of this line determines the position of the 3d3F4 level.
Table II
Measurement of Al iv ground-state transitions.
Intensity
Wavelength (Å)
Wave number obs. (cm−1)
Upper level
obs.
calc.
700
161.688
0.688
618 475
3s
3P1°
800
160.074
0.072
624 711
1P1°
150
131.647
0.649
759 607
3d
3P1°
blended Al v
130.39
0.398
766 930
3D1°
700
129.730
0.729
770 832
1P1°
300
124.550
0.547
802 890
4s
[3/2]1°
400
124.030
0.033
806 257
[1/2]1°
Table III
Energy levels of Al+.
Energy (cm−1)
Interval
Designation
J
0
2p6 1S
0
616 644.2
2p53s3P°
2
618 473.9
−1829.7
1
620 060.1
−1586.2
0
624 717.5
2p53s1P°
1
671 632.5
2p53p3S
1
680 859.8
2p53p3D
3
681 683.3
−823.5
2
682.981.8
−1298.5
1
685 728.2
2p53p1D
2
686 959.1
2p53p1P
1
687 830.5
2p53p3P
2
688 649.4
−818.9
1
688 309.6
339.8
0
714 096.9
2p53p1S
0
759 193.4
2p53d3P°
0
759 596.8
403.4
1
760 472.3
875.5
2
761 688.4
2p53d3F°
4
762 272.5
−584.1
3
763 613.6
−1341.1
2
764 297.1
2p53d1F°
3
766 880.8
2p53d3D°
1
767 750.6
869.8
2
767 345.5
−405.1
3
767 035.7
2p53d1D°
2
770 836.9
2p53d1P°
1
801 882.3
−1025.2
2p5(2P3/2°)4s[3/2]°
2
802 907.5
1
805 309.7
925.2
2p5(2P1/2°)4s[1/2]°
0
806 234.9
1
Table IV
Parameter values for the 2p53d configuration of Al iv.
The 3p3S1 level is not included in the fit; for nine experimental levels (five terms) the rms deviation is 64 cm−1.
For 10 experimental levels (six terms) the rms deviation is 62 cm−1.
Table VII
Main LS compositions of the 2p53p levels of Al iv.