Table 6
Classified transitions of Nd III originating from the 4f35d, 4f36s, and 4f36p configurations in the Nd–Ar PDL FT spectra (extract).
| S/N | Int. | 𝑔uA | log(𝑔/ƒ) | FWHM | σobs | σRitz | σobs – σRitz |  |
Lower level | Upper level | Eı | Eu | Note | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (arb.) | (s−1) | (cm−1) | (cm−1) | (cm−1) | (cm−1) | (Å) | Config. | TermJ | Config. | TermJ | (cm−1) | (cm−1) | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) |
| 10 | 120 | 1.3 × 107 | −2.14 | 0.251 | 51 599.527(28) | 51 599.538(9) | −0.011 | 1937.3641(3) | 4f3(4I°)5d | 5L°8 | 4f3(4I°)6p | 3I7 | 18 861.064 | 70460.602 | B/W |
| 5 | 68 | 6.1 × 108 | −0.42 | 0.259 | 49 192.654(29) | 49 192.658(8) | −0.004 | 2032.1699(3) | 4f3(4I°)5d | 5L°6 | 4f3(4I°)6p | 3I5 | 15 158.154 | 64 350.812 | |
| 8 | 36 | 5.0 × 108 | −0.51 | 0.177 | 48 981.473(32) | 48 981.477(6) | −0.004 | 2040.9327(2) | 4f3(4I°)5d | 5K°5 | 4f3(4I°)6p | 5H4 | 15 262.437 | 64 243.914 | |
| 5 | 32 | 7.4 × 108 | −0.32 | 0.158 | 48402.467(24) | 48402.455(7) | 0.012 | 2065.3510(3) | 4f3(4I°)5d | 5K°9 | 4f3(4I°)6p | 3K8 | 22 197.115 | 70 599.570 | |
| 6 | 40 | 6.5 × 108 | −0.38 | 0.179 | 48 096.502(21) | 48 096.490(6) | 0.012 | 2078.4914(3) | 4f3(4I°)5d | 5K°8 | 4f3(4I°)6p | 3K7 | 20410.897 | 68 507.387 | |
| 13 | 90 | 9.2 × 108 | −0.22 | 0.159 | 48 070.793(10) | 48 070.798(7) | −0.005 | 2079.6024(3) | 4f3(4I°)5d | 5L°7 | 4f3(4I°)6p | 5H6 | 16952.835 | 65 023.633 | |
| 13 | 110 | 2.5 × 109 | 0.21 | 0.193 | 47943.883(10) | 47 943.894(8) | −0.011 | 2085.1076(3) | 4f3(4I°)5d | 5K°9 | 4f3(4I°)6p | 5K7 | 22 197.115 | 70141.009 | |
| 8 | 64 | 1.1 × 109 | −0.14 | 0.221 | 47 891.776(17) | 47 891.767(7) | 0.009 | 2087.3774(3) | 4f3(4I°)5d | 5K°8 | 4f3(4I°)6p | 5K8 | 20410.897 | 68 302.664 | |
| 7 | 42 | 4.8 × 108 | −0.50 | 0.166 | 47 856.459(17) | 47 856.449(7) | 0.010 | 2088.9181(3) | 4f3(4I°)5d | 5L°8 | 4f3(4I°)6p | 5H7 | 18 861.064 | 66717.513 | |
| 3 | 28 | 2.8 × 108 | −0.74 | 0.275 | 47 840.961(53) | 47 840.953(6) | 0.008 | 2089.5948(3) | 4f3(4I°)5d | 5K°7 | 4f3(4I°)6p | 5I7 | 18 656.272 | 66497.225 | |
| 7 | 56 | 5.7 × 108 | −0.43 | 0.233 | 47 795.548(20) | 47 795.540(6) | 0.008 | 2091.5805(2) | 4f3(4I°)5d | 5K°7 | 4f3(4I°)6p | 3ĸ6 | 18 656.272 | 66451.812 | |
| 15 | 140 | 1.4 × 109 | −0.03 | 0.214 | 47 636.162(10) | 47 636.161(8) | 0.001 | 2098.5793(3) | 4f3(4I°)5d | 5L°8 | 4f3(4I°)6p | 5I7 | 18 861.064 | 66497.225 | |
| 26 | 190 | 3.3 × 109 | 0.34 | 0.224 | 47 442.932(7) | 47 442.932(7) | 0.000 | 2107.1276(3) | 4f3(4I°)5d | 5L°9 | 4f3(4I°)6p | 5ĸ8 | 20 859.732 | 68 302.664 | |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| 39 | 2000 | 1.1 × 107 | −1.17 | 0.150 | 15 578.912(4) | 15 578.909(4) | 0.003 | 6417.1610(14) | 4f4 | 3K26 | 4f3(2H2°)5d | 3K°6 | 14064.277 | 29 643.186 | |
| 15 | 910 | 7.1 × 106 | −1.34 | 0.123 | 15 322.669(10) | 15 322.666(7) | 0.003 | 6524.4769(28) | 4f4 | 3K28 | 4f3(2H2°)5d | 3K°7 | 16459.136 | 31781.802 | |
| 12 | 800 | 5.9 × 105 | −2.42 | 0.128 | 15 317.632(13) | 15 317.640(4) | −0.008 | 6526.6177(15) | 4f4 | 5I8 | 4f3(4I°)5d | 5K°8 | 5093.257 | 20410.897 | |
| 312 | 21 000 | 5.8 × 106 | −1.43 | 0.178 | 15 262.437(2) | 15 262.437(2) | 0.000 | 6550.2241(9) | 4f4 | 5I4 | 4f3(4I°)5d | 5K°5 | 0.000 | 15 262.437 | |
| 12 | 820 | 6.3 × 105 | −2.37 | 0.141 | 14941.721(13) | 14941.724(3) | −0.003 | 6690.8208(13) | 4f4 | 5I7 | 4f3(4I°)5d | 5K°7 | 3714.548 | 18 656.272 | |
| 5 | 220 | 2.3 × 106 | −1.80 | 0.089 | 14 822.931(26) | 14 822.913(6) | 0.018 | 6744.4506(26) | 4f4 | 5G5 | 4f3(2H2°)5d | 3G°4 | 18 313.004 | 33 135.917 | B/W |
| 13 | 1000 | 1.9 × 106 | −1.88 | 0.145 | 14715.629(12) | 14715.620(9) | 0.009 | 6793.6253(40) | 4f4 | 5F3 | 4f3(4I°)5d | 3G°4 | 11424.605 | 26 140.225 | |
| 12 | 1000 | 4.5 × 105 | −2.50 | 0.136 | 14550.517(13) | 14 550.524(7) | −0.007 | 6870.7090(34) | 4f4 | 5I6 | 4f3(4I°)5d | 5K°6 | 2387.544 | 16938.068 | |
| 6 | 590 | 3.2 × 106 | −1.64 | 0.151 | 14489.386(13) | 14489.379(5) | 0.007 | 6899.7035(22) | 4f4 | 3K27 | 4f3(2H2°)5d | 3K°6 | 15 153.807 | 29 643.186 | |
| 4 | 430 | 2.3 × 105 | −2.76 | 0.134 | 14 124.631(17) | 14 124.643(3) | −0.012 | 7077.8735(15) | 4f4 | 5I5 | 4f3(4I°)5d | 5K°5 | 1137.794 | 15 262.437 | |
| 11 | 2500 | 6.3 × 106 | −1.28 | 0.130 | 13460.188(15) | 13 460.183(8) | 0.005 | 7427.2738(46) | 4f4 | 5F5 | 4f3(4I°)5d | 5G°6 | 13 210.278 | 26670.461 | |
| 6 | 1200 | 1.8 × 106 | −1.80 | 0.110 | 13 117.264(12) | 13 117.264(12) | 0.000 | 7621.4430(70) | 4f4 | 5F2 | 4f3(4I°)5d | 3G°3 | 10773.962 | 23 891.226 | |
| 4 | 2000 | 3.8 × 106 | −1.45 | 0.187 | 12697.081(22) | 12697.085(11) | −0.004 | 7873.6573(68) | 4f4 | 5F4 | 4f3(4I°)5d | 5G°5 | 12 181.327 | 24 878.412 | |
Notes. (1) Signal-to-noise ratio, (2) approximate relative intensity corresponding to relative photon fluxes, (3)–(4) weighted transition probability and log of the weighted (absorption) oscillator strength calculated using the Cowan code, where 𝑔u and 𝑔l refer to statistical weights of the upper and lower energy levels, respectively, (5) full width at half maximum of the fitted line, (6)–(7) observed wavenumber and Ritz wavenumber from level optimisation, (8) wavenumber difference between observed and Ritz values, (9) air Ritz wavelength converted using the three-term dispersion formula from Peck & Reeder (1972), (10)–(13) energy levels associated with the transition, their energies are in Cols. (14)–(15), respectively, and (16) contains comments of the observed transition, where ‘B/W’ indicates a blended or weak line with unreliable wavenumber and intensity, which was omitted from level optimisation. Standard uncertainties of values in Cols. (6), (7), and (9) are in parentheses in units of the final decimal place. The full version of this table is available at the CDS.
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