Jack Sugar, Victor Kaufman, and William L. Rowan, "Extreme-ultraviolet spectra of Pd, Ag, Cd, and Sn ions observed in a 1.3-keV tokamak plasma," J. Opt. Soc. Am. B 8, 913-916 (1991)
The elements Pd, Ag, Cd, and Sn were each injected by laser ablation into a tokamak plasma of 1.3-keV electron temperature. Spectra in the range of 50–400 Å were observed photographically with a 2.2-m grazing-incidence spectrograph. We identified lines in the isoelectronic sequences of S, Cl, Ar, and K that were not previously classified. They fall in the range of 51–78 Å and were measured with an uncertainty of ±0.010 Å. Graphs of the differences between the measured and the calculated transition energies vary smoothly and confirm the identifications. Least-squares fits to these differences permit accurate predictions for elements Tc, Ru, Rh, and In that have not been investigated. Similar fits to ground-state doublet splittings in the Cl and K sequences provide accurate values of magnetic dipole transition energies for these ions.
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Ag data from Ref. 1.
Wavelengths greater than 2000 Å are values in air.
Table 3
Measured Wavelengths for Spectra of Pd, Ag, Cd, and Sn Belonging to the Isoelectronic Sequences K, Ar, Cl, and Sa
Pd
Ag
Cd
Sn
Transition
λ (Å)
Int.
λ (Å)
Int.
λ (Å)
Int.
λ (Å)
Int.
K-Iike
3p63d2D3/2–3p5(2P∘)3d2(3F)2D3/2
60.114
10p
57.737
10
55.479
5
51.240
1
2D5/2– (3P)2P3/2
60.510
20
58.142
20
55.881
3
2D5/2– (3F)2D5/2
61.457
100
59.076
40
56.796
4
52.532
1
2D5/2– (1G)2F7/2
63.228
40
60.596
80bl
58.083
2
53.412
2
Ar-like
3p6 1S0–Sp5 3d1P1
63.081
80
60.596
80bl
58.209
7
53.740
1
1S0– 3D1
78.334
20
75.544
10
Cl-like
3p5 2P3/2–3P4(3P)3d2D5/2
64.985
60
62.372
60
59.868
3
2P3/2– (1D) 2S1/2
65.580
20
62.814
4
S-Iike
3p4 3P2–3p3(4S∘)3d3D3
67.711
20
64.877
20
1D2– (2D∘) 1F3
68.229
5
65.480
20
62.812
4
The symbols p and bl in the intensity (Int.) column refer to perturbed and blended lines, respectively. The intensity values represent visually estimated relative plate blackening for each spectrum.
Table 4
Wavelengths (in Å) for Spectra of Ions of Tc through Sn in the K, Ar, Cl, and S Isoelectronic Sequences, Derived from the O − C Wave-Number Plots
Transition
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
K-like ions
3p63d2D3/2–3p5(2P∘)3d2(3F)2D3/2
67.874
65.154
62.568
60.100
57.745
55.488
53.323
51.242
2D5/2– (3P)2P3/γ
68.302
65.575
62.982
60.507
58.145
55.880
53.708
51.620
2D5/2– (3F)2D5/γ
69.208
66.496
63.912
61.441
59.076
56.805
54.623
52.523
2D5/2– (1G)2F7/γ
71.923
68.871
65.974
63.218
60.595
58.090
55.698
53.411
Ar-like ions
71.197
68.361
65.657
63.070
60.594
58.217
55.936
53.739
87.771
84.434
81.296
78.335
75.544
72.905
70.416
68.056
Cl-like ions
3p5 2P3/2–3P4(3P)3d2D5/2
73.505
70.526
67.687
64.971
62.370
59.875
57.479
55.171
2P3/2– (1D) 2S1/γ
74.695
71.499
68.463
65.573
62.818
60.187
57.673
55.264
S-Iike ions
3p4 3P2–3p3(4S∘)3d3D3
67.696
64.877
1D2– (2D∘) 1F3
77.155
74.045
71.070
68.219
65.475
62.820
59.982
57.196
Tables (4)
Table 1
Observed M1 Transitions (in Å) Used to Obtain O − C Curves of Figs. 1 and 2
Ag data from Ref. 1.
Wavelengths greater than 2000 Å are values in air.
Table 3
Measured Wavelengths for Spectra of Pd, Ag, Cd, and Sn Belonging to the Isoelectronic Sequences K, Ar, Cl, and Sa
Pd
Ag
Cd
Sn
Transition
λ (Å)
Int.
λ (Å)
Int.
λ (Å)
Int.
λ (Å)
Int.
K-Iike
3p63d2D3/2–3p5(2P∘)3d2(3F)2D3/2
60.114
10p
57.737
10
55.479
5
51.240
1
2D5/2– (3P)2P3/2
60.510
20
58.142
20
55.881
3
2D5/2– (3F)2D5/2
61.457
100
59.076
40
56.796
4
52.532
1
2D5/2– (1G)2F7/2
63.228
40
60.596
80bl
58.083
2
53.412
2
Ar-like
3p6 1S0–Sp5 3d1P1
63.081
80
60.596
80bl
58.209
7
53.740
1
1S0– 3D1
78.334
20
75.544
10
Cl-like
3p5 2P3/2–3P4(3P)3d2D5/2
64.985
60
62.372
60
59.868
3
2P3/2– (1D) 2S1/2
65.580
20
62.814
4
S-Iike
3p4 3P2–3p3(4S∘)3d3D3
67.711
20
64.877
20
1D2– (2D∘) 1F3
68.229
5
65.480
20
62.812
4
The symbols p and bl in the intensity (Int.) column refer to perturbed and blended lines, respectively. The intensity values represent visually estimated relative plate blackening for each spectrum.
Table 4
Wavelengths (in Å) for Spectra of Ions of Tc through Sn in the K, Ar, Cl, and S Isoelectronic Sequences, Derived from the O − C Wave-Number Plots