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| Query NIST Bibliographic Databases for He I (new window): | |
| Wavelengths | Transition Probabilities |
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Observed | Ritz | Rel. | Aki | Acc. | Ei Ek | Configurations | Terms | Ji Jk | gi gk |Type| TP | Line |
Wavelength | Wavelength | Int. | s^-1 | | (cm-1) (cm-1) | | | | | | Ref. | Ref. |
Air (nm) | Air (nm) | (?) | | | | | | | | | | |
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301.37 | | 40 | | | | | | | | | | 16 |
| 318.77332 | | 5.05e+06 | B' | 159855.9726 - 191217.1585 | 1s.2s - 1s.4p | 3S - 3P* | 1 - 0 | 3 - 1 | | 2 | |
318.774 | 318.77444 | 20* | 5.05e+06 | B' | 159855.9726 - 191217.0482 | 1s.2s - 1s.4p | 3S - 3P* | 1 - 1 | 3 - 3 | | 2 | 183 |
318.774 | 318.77453 | 20* | 5.05e+06 | B' | 159855.9726 - 191217.0392 | 1s.2s - 1s.4p | 3S - 3P* | 1 - 2 | 3 - 5 | | 2 | 183 |
| 323.12704 | | 4.90e+05 | B | 166277.4384 - 197216.0878 | 1s.2s - 1s.10p | 1S - 1P* | 0 - 1 | 1 - 3 | | 7 | |
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| 325.82735 | | 6.50e+05 | B | 166277.4384 - 196959.6911 | 1s.2s - 1s.9p | 1S - 1P* | 0 - 1 | 1 - 3 | | 7 | |
| 329.67729 | | 9.01e+05 | B | 166277.4384 - 196601.3985 | 1s.2s - 1s.8p | 1S - 1P* | 0 - 1 | 1 - 3 | | 7 | |
335.455 | 335.45551 | 1 | 1.30e+06 | B | 166277.4384 - 196079.0858 | 1s.2s - 1s.7p | 1S - 1P* | 0 - 1 | 1 - 3 | | 7 | 183 |
344.759 | 344.75890 | 2 | 2.39e+06 | A | 166277.4384 - 195274.9067 | 1s.2s - 1s.6p | 1S - 1P* | 0 - 1 | 1 - 3 | | 4 | 183 |
| 355.44061 | | 3.64e+04 | A' | 169086.7647 - 197212.8254 | 1s.2p - 1s.10d | 3P* - 3D | 2 - 1 | 5 - 3 | | 4 | |
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| 355.44063 | | 3.27e+05 | A' | 169086.7647 - 197212.8242 | 1s.2p - 1s.10d | 3P* - 3D | 2 - 2 | 5 - 5 | | 4 | |
| 355.44063 | | 1.31e+06 | A' | 169086.7647 - 197212.8241 | 1s.2p - 1s.10d | 3P* - 3D | 2 - 3 | 5 - 7 | | 4 | |
| 355.44158 | | 5.46e+05 | A' | 169086.8412 - 197212.8254 | 1s.2p - 1s.10d | 3P* - 3D | 1 - 1 | 3 - 3 | | 4 | |
| 355.44159 | | 9.83e+05 | A' | 169086.8412 - 197212.8242 | 1s.2p - 1s.10d | 3P* - 3D | 1 - 2 | 3 - 5 | | 4 | |
| 355.45406 | | 7.28e+05 | A' | 169087.8291 - 197212.8254 | 1s.2p - 1s.10d | 3P* - 3D | 0 - 1 | 1 - 3 | | 4 | |
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| 356.29691 | | 3.02e+05 | B' | 169086.7647 - 197145.2316 | 1s.2p - 1s.10s | 3P* - 3S | 2 - 1 | 5 - 3 | | 4 | |
| 356.29788 | | 1.81e+05 | B' | 169086.8412 - 197145.2316 | 1s.2p - 1s.10s | 3P* - 3S | 1 - 1 | 3 - 3 | | 4 | |
| 356.31042 | | 6.03e+04 | B' | 169087.8291 - 197145.2316 | 1s.2p - 1s.10s | 3P* - 3S | 0 - 1 | 1 - 3 | | 4 | |
| 358.72618 | | 5.69e+04 | C+' | 169086.7647 - 196955.2265 | 1s.2p - 1s.9d | 3P* - 3D | 2 - 1 | 5 - 3 | | 8 | |
| 358.72620 | | 2.05e+06 | C+' | 169086.7647 - 196955.2248 | 1s.2p - 1s.9d | 3P* - 3D | 2 - 3 | 5 - 7 | | 8 | |
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| 358.72620 | | 5.13e+05 | C+' | 169086.7647 - 196955.2249 | 1s.2p - 1s.9d | 3P* - 3D | 2 - 2 | 5 - 5 | | 8 | |
358.727 | 358.72716 | 1* | 8.54e+05 | C+' | 169086.8412 - 196955.2265 | 1s.2p - 1s.9d | 3P* - 3D | 1 - 1 | 3 - 3 | | 8 | 183 |
358.727 | 358.72718 | 1* | 1.54e+06 | C+' | 169086.8412 - 196955.2249 | 1s.2p - 1s.9d | 3P* - 3D | 1 - 2 | 3 - 5 | | 8 | 183 |
| 358.73988 | | 1.14e+06 | C+' | 169087.8291 - 196955.2265 | 1s.2p - 1s.9d | 3P* - 3D | 0 - 1 | 1 - 3 | | 8 | |
361.364 | 361.36421 | 3 | 3.76e+06 | B | 166277.4384 - 193942.4605 | 1s.2s - 1s.5p | 1S - 1P* | 0 - 1 | 1 - 3 | | 7 | 183 |
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363.423 | 363.42308 | 2* | 7.25e+04 | A' | 169086.7647 - 196595.0629 | 1s.2p - 1s.8d | 3P* - 3D | 2 - 1 | 5 - 3 | | 4 | 183 |
363.423 | 363.42311 | 2* | 2.61e+06 | A' | 169086.7647 - 196595.0605 | 1s.2p - 1s.8d | 3P* - 3D | 2 - 3 | 5 - 7 | | 4 | 183 |
363.423 | 363.42311 | 2* | 6.52e+05 | A' | 169086.7647 - 196595.0606 | 1s.2p - 1s.8d | 3P* - 3D | 2 - 2 | 5 - 5 | | 4 | 183 |
| 363.42409 | | 1.09e+06 | A' | 169086.8412 - 196595.0629 | 1s.2p - 1s.8d | 3P* - 3D | 1 - 1 | 3 - 3 | | 4 | |
| 363.42412 | | 1.96e+06 | A' | 169086.8412 - 196595.0606 | 1s.2p - 1s.8d | 3P* - 3D | 1 - 2 | 3 - 5 | | 4 | |
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| 363.43714 | | 1.45e+06 | A' | 169087.8291 - 196595.0629 | 1s.2p - 1s.8d | 3P* - 3D | 0 - 1 | 1 - 3 | | 4 | |
| 365.19816 | | 6.00e+05 | B' | 169086.7647 - 196461.3602 | 1s.2p - 1s.8s | 3P* - 3S | 2 - 1 | 5 - 3 | | 4 | |
| 365.19917 | | 3.60e+05 | B' | 169086.8412 - 196461.3602 | 1s.2p - 1s.8s | 3P* - 3S | 1 - 1 | 3 - 3 | | 4 | |
| 365.21236 | | 1.20e+05 | B' | 169087.8291 - 196461.3602 | 1s.2p - 1s.8s | 3P* - 3S | 0 - 1 | 1 - 3 | | 4 | |
370.500 | 370.49953 | 3* | 1.23e+05 | C+' | 169086.7647 - 196069.6748 | 1s.2p - 1s.7d | 3P* - 3D | 2 - 1 | 5 - 3 | | 8 | 183 |
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370.500 | 370.49957 | 3* | 1.11e+06 | C+' | 169086.7647 - 196069.6713 | 1s.2p - 1s.7d | 3P* - 3D | 2 - 2 | 5 - 5 | | 8 | 183 |
370.500 | 370.49958 | 3* | 4.44e+06 | C+' | 169086.7647 - 196069.6711 | 1s.2p - 1s.7d | 3P* - 3D | 2 - 3 | 5 - 7 | | 8 | 183 |
| 370.50058 | | 1.85e+06 | C+' | 169086.8412 - 196069.6748 | 1s.2p - 1s.7d | 3P* - 3D | 1 - 1 | 3 - 3 | | 8 | |
| 370.50062 | | 3.33e+06 | C+' | 169086.8412 - 196069.6713 | 1s.2p - 1s.7d | 3P* - 3D | 1 - 2 | 3 - 5 | | 8 | |
| 370.51414 | | 2.47e+06 | C+' | 169087.8291 - 196069.6748 | 1s.2p - 1s.7d | 3P* - 3D | 0 - 1 | 1 - 3 | | 8 | |
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373.286 | | 1 | | | | | | | | | | 183 |
381.9607 | 381.96020 | 10* | 1.64e+05 | B' | 169086.7647 - 195260.0755 | 1s.2p - 1s.6d | 3P* - 3D | 2 - 1 | 5 - 3 | | ca | 183 |
381.9607 | 381.96028 | 10* | 5.89e+06 | B' | 169086.7647 - 195260.0696 | 1s.2p - 1s.6d | 3P* - 3D | 2 - 3 | 5 - 7 | | ca | 183 |
381.9607 | 381.96028 | 10* | 1.47e+06 | B' | 169086.7647 - 195260.0700 | 1s.2p - 1s.6d | 3P* - 3D | 2 - 2 | 5 - 5 | | ca | 183 |
| 381.96131 | | 2.45e+06 | B' | 169086.8412 - 195260.0755 | 1s.2p - 1s.6d | 3P* - 3D | 1 - 1 | 3 - 3 | | ca | |
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| 381.96139 | | 4.42e+06 | B' | 169086.8412 - 195260.0700 | 1s.2p - 1s.6d | 3P* - 3D | 1 - 2 | 3 - 5 | | ca | |
381.976 | 381.97573 | 1 | 3.27e+06 | B' | 169087.8291 - 195260.0755 | 1s.2p - 1s.6d | 3P* - 3D | 0 - 1 | 1 - 3 | | ca | 183 |
| 383.35487 | | 9.71e+05 | A | 171134.8951 - 197212.9878 | 1s.2p - 1s.10d | 1P* - 1D | 1 - 2 | 3 - 5 | | 4 | |
| 386.74724 | | 1.31e+06 | B' | 169086.7647 - 194936.1181 | 1s.2p - 1s.6s | 3P* - 3S | 2 - 1 | 5 - 3 | | ca | |
| 386.74838 | | 7.87e+05 | B' | 169086.8412 - 194936.1181 | 1s.2p - 1s.6s | 3P* - 3S | 1 - 1 | 3 - 3 | | ca | |
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| 386.76316 | | 2.62e+05 | B' | 169087.8291 - 194936.1181 | 1s.2p - 1s.6s | 3P* - 3S | 0 - 1 | 1 - 3 | | ca | |
| 387.17864 | | 1.26e+06 | C | 171134.8951 - 196955.4470 | 1s.2p - 1s.9d | 1P* - 1D | 1 - 2 | 3 - 5 | | 8 | |
| 388.86046 | | 9.478e+06 | AA' | 159855.9726 - 185564.8528 | 1s.2s - 1s.3p | 3S - 3P* | 1 - 0 | 3 - 1 | | 1 | |
388.865 | 388.86456 | 500* | 9.478e+06 | AA' | 159855.9726 - 185564.5817 | 1s.2s - 1s.3p | 3S - 3P* | 1 - 1 | 3 - 3 | | 1 | 183 |
388.865 | 388.86489 | 500* | 9.478e+06 | AA' | 159855.9726 - 185564.5602 | 1s.2s - 1s.3p | 3S - 3P* | 1 - 2 | 3 - 5 | | 1 | 183 |
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| 392.65443 | | 1.95e+06 | A | 171134.8951 - 196595.3723 | 1s.2p - 1s.8d | 1P* - 1D | 1 - 2 | 3 - 5 | | 4 | |
| 393.59452 | | 7.18e+05 | B | 171134.8951 - 196534.5625 | 1s.2p - 1s.8s | 1P* - 1S | 1 - 0 | 3 - 1 | | 4 | |
396.4729 | 396.47288 | 20 | 7.17e+06 | A | 166277.4384 - 191492.7101 | 1s.2s - 1s.4p | 1S - 1P* | 0 - 1 | 1 - 3 | | 2 | 183 |
400.927 | 400.92565 | 1 | 2.79e+06 | C | 171134.8951 - 196070.1266 | 1s.2p - 1s.7d | 1P* - 1D | 1 - 2 | 3 - 5 | | 8 | 183 |
| 402.39798 | | 1.09e+06 | B | 171134.8951 - 195978.8936 | 1s.2p - 1s.7s | 1P* - 1S | 1 - 0 | 3 - 1 | | 4 | |
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402.6191 | 402.61844 | 50* | 3.25e+05 | A' | 169086.7647 - 193917.1597 | 1s.2p - 1s.5d | 3P* - 3D | 2 - 1 | 5 - 3 | | 4 | 183 |
402.6191 | 402.61859 | 50* | 2.93e+06 | A' | 169086.7647 - 193917.1502 | 1s.2p - 1s.5d | 3P* - 3D | 2 - 2 | 5 - 5 | | 4 | 183 |
402.6191 | 402.61860 | 50* | 1.17e+07 | A' | 169086.7647 - 193917.1496 | 1s.2p - 1s.5d | 3P* - 3D | 2 - 3 | 5 - 7 | | 4 | 183 |
| 402.61967 | | 4.88e+06 | A' | 169086.8412 - 193917.1597 | 1s.2p - 1s.5d | 3P* - 3D | 1 - 1 | 3 - 3 | | 4 | |
| 402.61983 | | 8.78e+06 | A' | 169086.8412 - 193917.1502 | 1s.2p - 1s.5d | 3P* - 3D | 1 - 2 | 3 - 5 | | 4 | |
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402.636 | 402.63569 | 5 | 6.50e+06 | A' | 169087.8291 - 193917.1597 | 1s.2p - 1s.5d | 3P* - 3D | 0 - 1 | 1 - 3 | | 4 | 183 |
| 412.08107 | | 2.39e+06 | B' | 169086.7647 - 193346.9897 | 1s.2p - 1s.5s | 3P* - 3S | 2 - 1 | 5 - 3 | | ca | |
412.082 | 412.08237 | 12 | 1.43e+06 | B' | 169086.8412 - 193346.9897 | 1s.2p - 1s.5s | 3P* - 3S | 1 - 1 | 3 - 3 | | ca | 183 |
412.099 | 412.09915 | 2 | 4.78e+05 | B' | 169087.8291 - 193346.9897 | 1s.2p - 1s.5s | 3P* - 3S | 0 - 1 | 1 - 3 | | ca | 183 |
414.376 | 414.37590 | 3 | 4.95e+06 | B | 171134.8951 - 195260.7688 | 1s.2p - 1s.6d | 1P* - 1D | 1 - 2 | 3 - 5 | | ca | 183 |
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| 416.89715 | | 1.76e+06 | A | 171134.8951 - 195114.8672 | 1s.2p - 1s.6s | 1P* - 1S | 1 - 0 | 3 - 1 | | 4 | |
438.7929 | 438.79291 | 10 | 9.07e+06 | A | 171134.8951 - 193918.2882 | 1s.2p - 1s.5d | 1P* - 1D | 1 - 2 | 3 - 5 | | 4 | 183 |
443.755 | 443.75533 | 3 | 3.13e+06 | B | 171134.8951 - 193663.5107 | 1s.2p - 1s.5s | 1P* - 1S | 1 - 0 | 3 - 1 | | ca | 183 |
447.1479 | 447.14704 | 200* | 6.97e+05 | A' | 169086.7647 - 191444.4989 | 1s.2p - 1s.4d | 3P* - 3D | 2 - 1 | 5 - 3 | | 4 | 183 |
447.1479 | 447.14741 | 200* | 6.28e+06 | A' | 169086.7647 - 191444.4804 | 1s.2p - 1s.4d | 3P* - 3D | 2 - 2 | 5 - 5 | | 4 | 183 |
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447.1479 | 447.14743 | 200* | 2.51e+07 | A' | 169086.7647 - 191444.4792 | 1s.2p - 1s.4d | 3P* - 3D | 2 - 3 | 5 - 7 | | 4 | 183 |
| 447.14856 | | 1.05e+07 | A' | 169086.8412 - 191444.4989 | 1s.2p - 1s.4d | 3P* - 3D | 1 - 1 | 3 - 3 | | 4 | |
| 447.14893 | | 1.88e+07 | A' | 169086.8412 - 191444.4804 | 1s.2p - 1s.4d | 3P* - 3D | 1 - 2 | 3 - 5 | | 4 | |
447.168 | 447.16832 | 25 | 1.39e+07 | A' | 169087.8291 - 191444.4989 | 1s.2p - 1s.4d | 3P* - 3D | 0 - 1 | 1 - 3 | | 4 | 183 |
471.3146 | 471.31392 | 30 | 5.89e+06 | B' | 169086.7647 - 190298.1115 | 1s.2p - 1s.4s | 3P* - 3S | 2 - 1 | 5 - 3 | | 4 | 183 |
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| 471.31561 | | 3.53e+06 | B' | 169086.8412 - 190298.1115 | 1s.2p - 1s.4s | 3P* - 3S | 1 - 1 | 3 - 3 | | 4 | |
471.338 | 471.33757 | 4 | 1.18e+06 | B' | 169087.8291 - 190298.1115 | 1s.2p - 1s.4s | 3P* - 3S | 0 - 1 | 1 - 3 | | 4 | 183 |
492.1931 | 492.19310 | 20 | 2.02e+07 | A | 171134.8951 - 191446.4540 | 1s.2p - 1s.4d | 1P* - 1D | 1 - 2 | 3 - 5 | | 4 | 183 |
501.5678 | 501.56780 | 100 | 1.338e+07 | AA | 166277.4384 - 186209.3632 | 1s.2s - 1s.3p | 1S - 1P* | 0 - 1 | 1 - 3 | | 1 | 183 |
504.774 | 504.77384 | 10 | 6.55e+06 | A | 171134.8951 - 190940.2252 | 1s.2p - 1s.4s | 1P* - 1S | 1 - 0 | 3 - 1 | | 4 | 183 |
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| 587.55987 | | 1.96e+06 | A' | 169086.7647 - 186101.5908 | 1s.2p - 1s.3d | 3P* - 3D | 2 - 1 | 5 - 3 | | 2 | |
| 587.56141 | | 1.76e+07 | A' | 169086.7647 - 186101.5466 | 1s.2p - 1s.3d | 3P* - 3D | 2 - 2 | 5 - 5 | | 2 | |
| 587.56150 | | 7.06e+07 | A' | 169086.7647 - 186101.5440 | 1s.2p - 1s.3d | 3P* - 3D | 2 - 3 | 5 - 7 | | 2 | |
587.562 | 587.56251 | 500 | 2.94e+07 | A' | 169086.8412 - 186101.5908 | 1s.2p - 1s.3d | 3P* - 3D | 1 - 1 | 3 - 3 | | 2 | 183 |
| 587.56405 | | 5.29e+07 | A' | 169086.8412 - 186101.5466 | 1s.2p - 1s.3d | 3P* - 3D | 1 - 2 | 3 - 5 | | 2 | |
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587.597 | 587.59663 | 100 | 3.92e+07 | A' | 169087.8291 - 186101.5908 | 1s.2p - 1s.3d | 3P* - 3D | 0 - 1 | 1 - 3 | | 2 | 183 |
667.815 | 667.81518 | 100 | 6.38e+07 | A | 171134.8951 - 186104.9646 | 1s.2p - 1s.3d | 1P* - 1D | 1 - 2 | 3 - 5 | | 2 | 183 |
686.748 | | 3 | | | | | | | | | | 183 |
706.519 | 706.51769 | 200 | 1.54e+07 | A | 169086.7647 - 183236.7905 | 1s.2p - 1s.3s | 3P* - 3S | 2 - 1 | 5 - 3 | | ls | 183 |
| 706.52150 | | 9.25e+06 | A | 169086.8412 - 183236.7905 | 1s.2p - 1s.3s | 3P* - 3S | 1 - 1 | 3 - 3 | | ls | |
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706.571 | 706.57085 | 30 | 3.08e+06 | A | 169087.8291 - 183236.7905 | 1s.2p - 1s.3s | 3P* - 3S | 0 - 1 | 1 - 3 | | ls | 183 |
728.135 | 728.13504 | 50 | 1.81e+07 | A | 171134.8951 - 184864.8282 | 1s.2p - 1s.3s | 1P* - 1S | 1 - 0 | 3 - 1 | | 2 | 183 |
781.615 | | 1 | | | | | | | | | | 183 |
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Query time: 0.5 sec
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