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.

Tomasz Jaroslaw Wasowicz, Slawomir Werbowy, Jerzy Kwela, and Ryszard Drozdowski J. Opt. Soc. Am. B 27(12) 2628-2631 (2010)

References

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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 i^{a}

Configuration

^{3}D_{3}

^{3}D_{2}

^{3}F_{4}

^{1}S_{0}

^{3}P_{2}

^{3}F_{3}

^{3}D_{1}

^{1}D_{2}

^{3}F_{2}

^{3}P_{0}

^{3}P_{1}

Calculated Energy

Experimental Energy

5d^{9}6s

^{3}D_{3}

E-7

E-7

—

E-6

E-2

E-2

1

2

—

4

0

0

5d^{9}6s

^{3}D_{2}

E-2

E-10

E-2

E-2

E-1

E-2

E-1

E-2

1

E-1

733

775

5d^{8}6s^{2}

^{3}F_{4}

E-9

—

—

E-2

E-2

—

E-2

1

—

—

516

823

5d^{10}

^{1}S_{0}

—

—

—

E-10

—

—

E-2

E-3

—

—

6 696

6140

5d^{8}6s^{2}

^{3}P_{2}

13

E-1

—

—

E-3

E-5

E-3

E-2

E-1

E-1

6 484

6 567

5d^{8}6s^{2}

^{3}F_{3}

E-6

4

168

—

1

—

E-4

E-4

—

E-2

10 392

10 116

5d^{9}6s

^{3}D_{1}

—

40

—

E-9

3

—

E-4

E-2

—

E-1

10 392

10 131

5d^{9}6s

^{1}D_{2}

77

10

—

—

E-1

E-1

1

E-5

E-4

E-9

13 295

13 496

5d^{8}6s^{2}

^{3}F_{2}

2

24

—

—

40

17

E-1

1

E-8

E-3

16 053

15 501

5d^{8}6s^{2}

^{3}P_{0}

—

—

—

—

—

—

E-6

—

—

—

16 898

16 983

5d^{8}6s^{2}

^{3}P_{1}

—

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 ^{3}P_{0} 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 ii^{a}

Configuration

^{2}D_{5/2}

^{4}F_{9/2}

^{2}D_{3/2}

^{4}F_{7/2}

^{4}F_{5/2}

^{4}F_{3/2}

^{4}P_{5/2}

^{2}F_{7/2}

Calculated Energy

Experimental Energy

5d^{9}

^{2}D_{5/2}

E-4

E-3

E-1

E-1

1

1

9

0

0

5d^{8}6s

^{4}F_{9/2}

—

—

E-5

E-2

—

E-1

E-2

5 302

4 786

5d^{9}

^{2}D_{3/2}

35

—

E-8

E-4

E-3

E-2

E-2

8 488

8 419

5d^{8}6s

^{4}F_{7/2}

E-1

11

—

E-3

E-4

E-3

E-4

9 303

9 356

5d^{8}6s

^{4}F_{5/2}

E-1

—

1

5

E-6

E-7

E-5

13 456

13 329

5d^{8}6s

^{4}F_{3/2}

24

—

E-3

—

1

E-5

E-6

15 268

15 791

5d^{8}6s

^{4}P_{5/2}

1

—

3

80

2

E-1

E-8

16 924

16 820

5d^{8}6s

^{2}F_{7/2}

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 i^{a}

Configuration

^{3}D_{3}

^{3}D_{2}

^{3}F_{4}

^{1}S_{0}

^{3}P_{2}

^{3}F_{3}

^{3}D_{1}

^{1}D_{2}

^{3}F_{2}

^{3}P_{0}

^{3}P_{1}

Calculated Energy

Experimental Energy

5d^{9}6s

^{3}D_{3}

E-7

E-7

—

E-6

E-2

E-2

1

2

—

4

0

0

5d^{9}6s

^{3}D_{2}

E-2

E-10

E-2

E-2

E-1

E-2

E-1

E-2

1

E-1

733

775

5d^{8}6s^{2}

^{3}F_{4}

E-9

—

—

E-2

E-2

—

E-2

1

—

—

516

823

5d^{10}

^{1}S_{0}

—

—

—

E-10

—

—

E-2

E-3

—

—

6 696

6140

5d^{8}6s^{2}

^{3}P_{2}

13

E-1

—

—

E-3

E-5

E-3

E-2

E-1

E-1

6 484

6 567

5d^{8}6s^{2}

^{3}F_{3}

E-6

4

168

—

1

—

E-4

E-4

—

E-2

10 392

10 116

5d^{9}6s

^{3}D_{1}

—

40

—

E-9

3

—

E-4

E-2

—

E-1

10 392

10 131

5d^{9}6s

^{1}D_{2}

77

10

—

—

E-1

E-1

1

E-5

E-4

E-9

13 295

13 496

5d^{8}6s^{2}

^{3}F_{2}

2

24

—

—

40

17

E-1

1

E-8

E-3

16 053

15 501

5d^{8}6s^{2}

^{3}P_{0}

—

—

—

—

—

—

E-6

—

—

—

16 898

16 983

5d^{8}6s^{2}

^{3}P_{1}

—

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 ^{3}P_{0} 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 ii^{a}

Configuration

^{2}D_{5/2}

^{4}F_{9/2}

^{2}D_{3/2}

^{4}F_{7/2}

^{4}F_{5/2}

^{4}F_{3/2}

^{4}P_{5/2}

^{2}F_{7/2}

Calculated Energy

Experimental Energy

5d^{9}

^{2}D_{5/2}

E-4

E-3

E-1

E-1

1

1

9

0

0

5d^{8}6s

^{4}F_{9/2}

—

—

E-5

E-2

—

E-1

E-2

5 302

4 786

5d^{9}

^{2}D_{3/2}

35

—

E-8

E-4

E-3

E-2

E-2

8 488

8 419

5d^{8}6s

^{4}F_{7/2}

E-1

11

—

E-3

E-4

E-3

E-4

9 303

9 356

5d^{8}6s

^{4}F_{5/2}

E-1

—

1

5

E-6

E-7

E-5

13 456

13 329

5d^{8}6s

^{4}F_{3/2}

24

—

E-3

—

1

E-5

E-6

15 268

15 791

5d^{8}6s

^{4}P_{5/2}

1

—

3

80

2

E-1

E-8

16 924

16 820

5d^{8}6s

^{2}F_{7/2}

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.