A detailed examination of a high-resolution Fourier-transform spectrum of a platinum hollow-cathode discharge in the near infrared has yielded one Pt i and four Pt ii parity-forbidden magnetic dipole transitions. Theoretical calculations and analysis of the hyperfine structure are used to confirm these assignments, and applications to astrophysics and lasers are suggested.
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Errors in parentheses are from the least-squares fit and do not include possible systematic errors.
Intensity is relative to the actual P–Ne FTS spectrum. Strongest line in the infrared FTS spectrum was a Ne transition at 6563.9 cm−1 with a relative intensity of 1000.
Ref. 1. Estimated error is mainly due to centriod approximation.
Doppler width corresponds to a thermal temperature of ~5000 K.
Computed from level isotope shifts.7
Not varied in the least-squares fit.
Ref. 4.
Ref. 8.
Table 2
Calculated and Experimental Energies (cm−1) and Calculated Lifetimes for the Low Even Levels of Pt ia
Configuration
3D3
3D2
3F4
1S0
3P2
3F3
3D1
1D2
3F2
3P0
3P1
Calculated Energy
Experimental Energy
5d96s
3D3
E-7
E-7
—
E-6
E-2
E-2
1
2
—
4
0
0
5d96s
3D2
E-2
E-10
E-2
E-2
E-1
E-2
E-1
E-2
1
E-1
733
775
5d86s2
3F4
E-9
—
—
E-2
E-2
—
E-2
1
—
—
516
823
5d10
1S0
—
—
—
E-10
—
—
E-2
E-3
—
—
6 696
6140
5d86s2
3P2
13
E-1
—
—
E-3
E-5
E-3
E-2
E-1
E-1
6 484
6 567
5d86s2
3F3
E-6
4
168
—
1
—
E-4
E-4
—
E-2
10 392
10 116
5d96s
3D1
—
40
—
E-9
3
—
E-4
E-2
—
E-1
10 392
10 131
5d96s
1D2
77
10
—
—
E-1
E-1
1
E-5
E-4
E-9
13 295
13 496
5d86s2
3F2
2
24
—
—
40
17
E-1
1
E-8
E-3
16 053
15 501
5d86s2
3P0
—
—
—
—
—
—
E-6
—
—
—
16 898
16 983
5d86s2
3P1
—
13
—
3
27
—
E-5
3
1
1
19 470
18 556
The calculated gA values (in reciprocal seconds) for electric quadrupole radiation are in the upper right-hand section of the table, and those for magnetic dipole are in the lower left. Values for gA less than 1 are given as powers of 10, i.e., E-3 = 10−3. The experimental energies are from the literature,1 except for the 3P0 state, which was recently located at 16983.49 cm−1.
Table 3
Calculated and Experimental Energies (cm−1) and Calculated Lifetimes for the Low Even Levels of Pt iia
Configuration
2D5/2
4F9/2
2D3/2
4F7/2
4F5/2
4F3/2
4P5/2
2F7/2
Calculated Energy
Experimental Energy
5d9
2D5/2
E-4
E-3
E-1
E-1
1
1
9
0
0
5d86s
4F9/2
—
—
E-5
E-2
—
E-1
E-2
5 302
4 786
5d9
2D3/2
35
—
E-8
E-4
E-3
E-2
E-2
8 488
8 419
5d86s
4F7/2
E-1
11
—
E-3
E-4
E-3
E-4
9 303
9 356
5d86s
4F5/2
E-1
—
1
5
E-6
E-7
E-5
13 456
13 329
5d86s
4F3/2
24
—
E-3
—
1
E-5
E-6
15 268
15 791
5d86s
4P5/2
1
—
3
80
2
E-1
E-8
16 924
16 820
5d86s
2F7/2
4
169
—
6
4
—
E-2
17 760
18 097
The calculated gA values (in reciprocal seconds) for electric quadrupole radiation are in the upper right-hand section of the table, and those for magnetic dipole are in the lower left. Values for gA less than 1 are given as powers of 10, i.e., E-3 = 10−3. The experimental energies are from Shenstone.3
Observed and calculated σ are in inverse centimeters. Calculated σ’s were derived from Pt ii terms.3
Intensities relative to actual Pt–Ne FTS spectrum.
Intensity not meaningful because badly blended and seen in a Pt–Ar spectrum.
Errors in parentheses are from the least-squares fit and do not include possible systematic errors.
Intensity is relative to the actual P–Ne FTS spectrum. Strongest line in the infrared FTS spectrum was a Ne transition at 6563.9 cm−1 with a relative intensity of 1000.
Ref. 1. Estimated error is mainly due to centriod approximation.
Doppler width corresponds to a thermal temperature of ~5000 K.
Computed from level isotope shifts.7
Not varied in the least-squares fit.
Ref. 4.
Ref. 8.
Table 2
Calculated and Experimental Energies (cm−1) and Calculated Lifetimes for the Low Even Levels of Pt ia
Configuration
3D3
3D2
3F4
1S0
3P2
3F3
3D1
1D2
3F2
3P0
3P1
Calculated Energy
Experimental Energy
5d96s
3D3
E-7
E-7
—
E-6
E-2
E-2
1
2
—
4
0
0
5d96s
3D2
E-2
E-10
E-2
E-2
E-1
E-2
E-1
E-2
1
E-1
733
775
5d86s2
3F4
E-9
—
—
E-2
E-2
—
E-2
1
—
—
516
823
5d10
1S0
—
—
—
E-10
—
—
E-2
E-3
—
—
6 696
6140
5d86s2
3P2
13
E-1
—
—
E-3
E-5
E-3
E-2
E-1
E-1
6 484
6 567
5d86s2
3F3
E-6
4
168
—
1
—
E-4
E-4
—
E-2
10 392
10 116
5d96s
3D1
—
40
—
E-9
3
—
E-4
E-2
—
E-1
10 392
10 131
5d96s
1D2
77
10
—
—
E-1
E-1
1
E-5
E-4
E-9
13 295
13 496
5d86s2
3F2
2
24
—
—
40
17
E-1
1
E-8
E-3
16 053
15 501
5d86s2
3P0
—
—
—
—
—
—
E-6
—
—
—
16 898
16 983
5d86s2
3P1
—
13
—
3
27
—
E-5
3
1
1
19 470
18 556
The calculated gA values (in reciprocal seconds) for electric quadrupole radiation are in the upper right-hand section of the table, and those for magnetic dipole are in the lower left. Values for gA less than 1 are given as powers of 10, i.e., E-3 = 10−3. The experimental energies are from the literature,1 except for the 3P0 state, which was recently located at 16983.49 cm−1.
Table 3
Calculated and Experimental Energies (cm−1) and Calculated Lifetimes for the Low Even Levels of Pt iia
Configuration
2D5/2
4F9/2
2D3/2
4F7/2
4F5/2
4F3/2
4P5/2
2F7/2
Calculated Energy
Experimental Energy
5d9
2D5/2
E-4
E-3
E-1
E-1
1
1
9
0
0
5d86s
4F9/2
—
—
E-5
E-2
—
E-1
E-2
5 302
4 786
5d9
2D3/2
35
—
E-8
E-4
E-3
E-2
E-2
8 488
8 419
5d86s
4F7/2
E-1
11
—
E-3
E-4
E-3
E-4
9 303
9 356
5d86s
4F5/2
E-1
—
1
5
E-6
E-7
E-5
13 456
13 329
5d86s
4F3/2
24
—
E-3
—
1
E-5
E-6
15 268
15 791
5d86s
4P5/2
1
—
3
80
2
E-1
E-8
16 924
16 820
5d86s
2F7/2
4
169
—
6
4
—
E-2
17 760
18 097
The calculated gA values (in reciprocal seconds) for electric quadrupole radiation are in the upper right-hand section of the table, and those for magnetic dipole are in the lower left. Values for gA less than 1 are given as powers of 10, i.e., E-3 = 10−3. The experimental energies are from Shenstone.3
Observed and calculated σ are in inverse centimeters. Calculated σ’s were derived from Pt ii terms.3
Intensities relative to actual Pt–Ne FTS spectrum.
Intensity not meaningful because badly blended and seen in a Pt–Ar spectrum.
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