Table I
Isotopic constitution of enriched samples of dysprosium and erbium, in percent.
Sample Isotope 156 158 160 161 162 163 164 164 Dy0.02 0.02 0.02 0.40 1.34 5.55 92.71 163 Dy0.01 0.01 0.05 0.49 4.35 89.97 5.14 161 Dy0.01 0.01 0.59 90.00 7.75 1.10 0.56 160 Dy0.05 0.10 53.70 27.50 9.83 5.19 3.82 162 164 166 167 168 170 170 Er0.05 0.10 1.03 0.96 1.94 96.07 167 Er0.05 0.10 5.81 87.20 6.42 0.53 166 Er0.01 0.01 99.97 0.02 0.01 0.01
Table II
Isotope-shift measurements in Dy i .
Wavelengtha (Å) Intensityb Isotope shift Δν (164−160) (10−3 cm−1 ) Energy levelsa (cm−1 ) J Even Odd J 8326.103 50 +80.7 8 0 12 007 8 7407.595 16 +89.9 8 0 13 495 9 7376.038 30 +75.5 7 4 134 17 687 7 7121.232 14 +79.4 7 4 134 18 172 6 7037.535 10 10 7 4 134 18 339 7 6998.095 70 +18.9 8 30 979 16 693 9 6991.304 20 +19.1 7 4 134 18 433 7 6958.084 60 +85.1 8 0 14 367 7 6929.550 20 +72.7 7 4 134 18 561 6 6906.443 30 +75.5 5 9 211 23 686 4 6888.833 30 −51.0 8 0 14 512 9 6852.965 110 +28.7 9 30 560 15 972 9 6835.418 240 +79.8 8 0 14 625 8 6818.205 16 −80.0 9 28 158 13 495 9 6790.298 10 +70.2 7 4 134 18 857 7 6765.894 60 +30.4 6747.930 40 0 6667.858 100 +24.1 9 30 560 15 567 8 6643.373 20 +78.0 7 4 134 19 182 6 6625.490 10a −68.4 9 29 714 14 625 8 6579.367 200 +78.7 8 0 15 194 7 6558.023 25 +19.9 6 7 050 22 294 5 6486.595 35 0 8 30 979 15 567 8 6460.829 10 0 6 7 050 22 524 5 6427.282 30a +85.4 7 4 134 19 688 8 6421.917 60 −65.3 8 0 15 567 8 6386.796 50 −41.2 9 23 218 7 565 8 6338.083 30a −64.0 7 4 134 19 907 7 6291.651 30a −76.1 8 27 896 12 007 8 6259.088 340 −68.6 8 0 15 972 9 6189.707 10a −75.8 9 28 158 12 007 8 6168.431 130 −68.6 7 4 134 20 341 8 6165.555 100a 0 9 23 780 7 565 8 6158.282 30 −45.9 7 23 799 7 565 8 6133.645 30 −70.6 6119.630 10a −96.2 6088.261 170 +27.9 7 4 134 20 554 6 6085.056 40 −70.2 6 7 050 23 479 7 6067.895 10a −58.2 6058.176 30 −55.6 6 7 050 23 552 5 6030.980 30 −79.2 8 25 095 8 519 7 6017.263 30 −69.3 5 9 211 25 825 6 6010.815 80 −61.9 7 4 134 20 766 7 6008.938 40 −49.2 6 7 050 23 687 6 5988.562 180 −60.1 8 0 16 693 9(7)c 5985.990 12 −67.9 5 9 211 25 912 5 5974.487 150 −69.0 8 0 16 733 8 5964.464 60 −80.5 10 26 752 9 990 9 5945.803 90 −80.3 10 29 706 12 892 10 5758.793 30 −72.2 7 25 879 8 519 7 5745.529 70 −78.7 9 27 390 9 990 9 5727.451 10a −59.8 8 27 445 9 990 9 5718.461 90 −55.4 7 4 134 21 616 7 5702.908 30 −74.0 8 25 095 7 565 8 5699.332 30a +75.3 7 4 134 21 675 7 5685.583 30 +80.0 6 7 050 24 634 5 5652.009 100 +78.8 8 0 17 687 7 5645.990 70 −20.3 5639.498 130 −70.5 8 0 17 727 9 5627.490 25 −69.9 7 4 134 21 899 8 5562.481 20 10 5547.268 80 −69.8 8 0 18 021 8 5528.012 40 −82.0 8 30 739 12 655 7 5502.794 30 −76.3 9 28 158 9 990 9 5451.109 120 10 8 0 18 339 7 5423.319 90 +18.0 8 0 18 433 7 5419.133 100 −71.9 5404.192 60 +80.3 7 4 134 22 633 6 5395.572 50 0 8 0 18 528 7 5392.044 30a 0 8 27 059 8 519 7 5352.114 40 −74.8 5340.300 80 −62.7 5322.233 10a −72.1 8 26 349 7 565 8 5301.576 100a +75.7 8 0 18 857 7 5282.072 70 −53.9 8 27 445 8 519 7 5274.068 10a −61.0 6 27 474 8 519 7 5267.111 80 −82.5 8 28 971 9 990 9 5260.558 160 −71.1 5236.253 30a +82.9 8 0 19 092 8 5135.023 40 −69.3 6 27 987 8 519 7 5077.669 150 +84.8 8 0 19 688 8 5070.678 120 −77.1 10 29 706 9 990 9 5047.249 30 −61.7 6 28 326 8 519 7 5042.634 200 −76.5 9 27 390 7 565 8 5022.119 90 +80.5 7 4 134 24 040 6 5003.867 60 10 4973.568 35 −75.5 9 38 444 18 343 8 4914.729 100a −70.6 8 0 20 341 8 4906.252 100a −65.9 6 7 050 27 427 7 4901.941 30a −70.8 7 27 959 7 565 8 4895.850 30a 0 8 36 392 15 972 9 4893.676 50 10 4888.081 100 −78.9 8 28 971 8 519 7 4880.161 90 +81.8 8 0 20 485 7 4836.947 10a 10 8 32 675 12 007 8 4832.377 70 0 4824.964 90 0 4819.041 80 10 9 36 717 15 972 9 4810.276 40 0 4807.942 50 −75.0 7 28 358 7 565 8 4800.639 30 0 8 36 392 15 567 8 4791.289 100 −62.2 7 4 134 24 999 8 4788.393 30 a 0 7 4 134 25 012 8 4781.814 30a 0 4775.789 120 0 4771.937 60 −10 4721.225 90 −70.4 4650.148 100a −75.9 4643.438 300a −10 8 0 21 529 9 4631.489 300a −74.2 7 31 674 10 088 6 4612.258 800 +77.2 8 0 21 675 7 4599.845 100a 0 7 4 134 25 868 6 4589.355 1 700 +73.0 8 0 21 783 7 4577.775 340 −67.0 8 0 21 838 9 4565.091 110 −67.7 8 0 21 899 8 4555.219 50 −72.3 7 29 512 7 565 8 4531.552 300a −62.0 8 0 22 061 7 4484.357 50 −71.7 7 32 382 10 088 6 4480.680 100a −66.4 7 29 877 7 565 8 4444.576 120 −109.7 10 35 385 12 892 10 4347.708 130 −105.7 10 36 490 13 495 9 4291.955 100 −68.0 7 4 134 27 427 7 4279.730 70 0 4276.688 200 −10 6 7 050 30 426 6 4268.264 60 0 7 4 134 27 556 7 4245.912 360 −10 4 10 925 34 470 5 4243.453 60 −142.9 7 31 124 7 565 8 4239.852 550 −10 5 9 211 32 790 6 4232.024 550 −10 5 9 211 32 834 6 4225.155 2 200 −55.0 6 7 050 30 711 7 4221.108 3 600 −35.3 7 4 134 27 817 8 4218.091 3 600 −35.6 7 4 134 27 834 7 4215.159 3 000 −26.3 8 0 23 717 9 4213.179 1 500 −54.5 6 7 050 30 778 6 4211.715 13 000 −62.6 8 0 23 736 7(9)c 4207.696 110 0 5 9 211 32 970 6 4205.062 190 −10 4202.241 550 0 6 7 050 30 840 6 4198.019 650 −31.1 5 9 211 33 025 5 4194.845 5 500 −24.5 8 0 23 832 8 4191.642 1 800 −22.0 7 4 134 27 984 7 4190.939 260 10 6 7 050 30 904 5 4186.818 9 500 −32.9 8 0 23 877 8 4183.723 750 0 7 4 134 28 029 8 4183.599 200 0 6 7 050 30 946 5 4167.974 4 600 −36.6 8 0 23 985 9 4159.313 100 −98.6 8 32 554 8 519 7 4158.055 100a 0 7 4 134 28 177 8 4146.060 800 −44.2 5 9 211 33 324 4 4130.351 280 0 8 0 24 204 8 4126.086 120 0 9 37 121 12 892 10 4103.874 700 0 6 7050 31 410 5 4099.880 80 0 7 4 134 28 518 8 4096.099 320 −110.1 4083.100 70 −82.4 4079.586 10a 0 6 7 050 31 555 6 4067.960 10a −113.8 4061.045 10a 0 4053.830 200 −111.8 7 4 134 28 795 8 4049.362 110 0 4048.931 200 0 4045.971 10 000 −34.5 8 0 24 708 7 4028.412 100a −70.8 7 32 382 7 565 8 4023.713 300 −82.5 7 32 411 7 565 8 4013.826 440 −62.2 8 0 24 906 7
a Reference
14 .
b Intensity values are from the NBS tables, Ref.
15 (multiplied by 10). For wavelengths not appearing in the NBS tables, the intensities have been taken from Ref.
14 (divided by 10).
c Reference
16 .
Table III
Isotope-shift measurements in Er i .
Wavelengtha (Å) Intensityb Isotope shift Δν (170−166) (10−3 cm−1 ) Energy levelsc (cm−1 ) J Even Odd J 6865.134 60 +27.3 6848.106 80 +26.7 6 31 946 17 347 5 6790.926 40 +52.0 6 31 878 17 157 7 6759.871 80 +29.9 6 31946 17 157 7 6637.647 16 −90.9 6583.480 70 +95.2 6 0 15 185 5 6557.823 20 0 6541.568 25 −87.1 6492.354 60 0 6326.127 60 −84.1 6308.773 150 +94.9 6 0 15 846 7 6299.415 50 −85.2 9 25 220 9 350 8 6286.864 35 −123.5 7 27 459 11 557 8 6262.564 60 −88.2d 6221.019 400 +26.4 6 0 16 070 6 6125.316 40 0 6 0 16 321 6 6116.012 40 −108.5 6022.563 80 −84.6 9 25 220 8 620 9 6014.827 60 −93.0 8 27 178 10 557 9 5881.149 130 −82.5 5872.353 160 −83.9 5855.307 130 −66.2 6 0 17 073 6 5850.072 110 0 4 5 035 22 124 5 5835.842 50 −64.6 5826.787 480 −65.6 6 0 17 157 7 5800.788 80 −70.4 5782.816 50 −71.5 5769.919 80 −51.9 5762.802 320 −67.0 6 0 17 347 5 5739.187 110 −95.6 5726.976 60 +95.1 6 0 17 456 6 5719.555 80 −84.3 9 26 099 8 620 9 5717.484 60 −90.4 9 28 043 10 557 9 5675.476 60 +74.3 5664.950 80 −83.6 8 26 268 8 620 9 5640.355 100 −86.9 5622.015 80 −88.6 5617.638 60a +91.0 6 0 17 796 7 5611.822 70 −113.0 5593.464 90 0 5503.783 70a −84.4 5485.903 90a −92.0e 9 34 724 16 501 9 5468.327 100 −92.7 5456.621 200 −92.5 5350.476 50 −86.3 5348.060 100 −85.3 9 28 043 9 350 8 5277.716 60 −93.6 5246.132 80a −88.6 5206.520 170 0 6 0 19 201 5 5172.775 140 −77.4 6 0 19 326 6 5164.767 190 −89.9 5160.421 70a −93.0e 5131.529 130 −91.2 8 27 178 7 696 7 5124.564 130 +98.4 6 0 19 508 5080.520 80 +93.2 5058.685 70a −118.6 7 27 459 7 696 7 5044.893 140 −61.2 6 0 19 816 7 5035.945 220 −93.9 5028.326 160 −87.9 8 27 578 7 696 7 5007.233 280 +82.4 4976.421 140 0 4966.976 70 +84.4e 4 5 035 25 162 5 4944.363 140 −89.2 4928.877 80 −118.2 7 27 459 7 176 6 4898.147 90 −86.8 8 35 493 15 083 8 4888.843 30 −147.5 7 27 625 7 176 6 4857.434 130 −93.2 4848.833 80 −86.1 7 29 967 9 350 8 4829.523 20 −89.7 8 28 397 7 696 7 4820.781 80a +97.0 4816.646 70a −126.8 4799.121 70a −85.0 8 29 451 8 620 9 4783.785 70a 0 5 6 958 27 856 5 4778.530 70a +44.8 4764.652 70a −73.8 4751.523 120 +82.8 4745.271 60 +50.1 5 6 958 28 026 5 4729.048 140 −91.0 29 760 8 620 9 4722.693 220 +99.7 6 0 21 168 7 4675.619 460 0 4673.162 250 +97.5 4624.785 25 −90.5 4611.253 60 −77.0 4606.605 800 +89.2 6 0 21 701 6 4598.119 60 −84.7 4596.747 35 −48.1 4592.921 60 +95.6 4551.994 80a −90.2 6 0 21 962 5 4522.745 100 −43.5 6 29 801 7 696 7 4518.656 30 −58.5 6 0 22 124 5 4496.391 100 −87.0 4489.047 40 −38.0 4484.479 70 0 6 29 989 7 696 7 4426.769 300 +95.7 4424.572 260 +83.8 4 5 035 27 629 4 4418.703 140 −41.3 6 29 801 7 176 6 4416.419 80a −48.7 4413.739 60 −84.3 4409.341 650 +87.6 4386.397 240 −85.4 7 29 967 7 176 6 4382.171 130 0 6 29 989 7 176 6 4380.652 50 0 4 5 035 27 856 4348.338 150 +53.1 4 5 035 28 026 5 4340.919 110 −87.9 9 34 587 11 557 8 4331.361 90 +101.7 4301.259 50 +67.5 8 44 410 21 168 7 4298.906 260 +81.5 4288.507 50 0 4286.556 550 +69.9 4 5 035 28 357 4 4263.725 70a −68.8 6 0 23 447 5 4235.182 60 +94.6 4 5 035 28 640 4223.487 50 0 4218.426 1 100 0 4190.696 800 −65.0 6 0 23 855 5 4185.477 110 −69.1 4172.217 110 −70.3 4 5 035 28 996 3 4164.831 150 0 5 6 958 30 962 4 4151.109 5 500 0 6 0 24 083 5 4131.505 480 −39.2 5 6 958 31 115 3 4116.361 260 −108.5 10 9 655 33 942 10 4109.325 100 0 5 6 958 31 286 4098.099 850 0 5 6 958 31 353 4 4092.898 170 +53.0 4 5 035 29 460 4087.633 2 800 +72.0 6 0 24 451 6 4083.047 110 0 5 6 958 31 442 5 4077.881 340 0 4 5 035 29 550 5 4059.508 440 0 4 10 750 35 377 3 4046.955 800 0 4 10 750 35 453 5 4037.685 140 −70.7 4 5 035 29 794 5 4036.112 150 −57.9 4021.548 360 +77.2 4 5 035 29 894 5 4020.511 2 400 −54.0 5 6 958 31 823 6 4012.533 900 0 4007.964 11 000 −58.1 6 0 24 943 7 4004.046 180 0 3987.656 650 +37.5 4 5 035 30 105 4 3982.331 900 0 5 6 958 32 062 5 3977.019 650 +58.8 4 5 035 30 172 4 3973.576 2 600 0 3973.036 2 200 +69.9 6 0 25 162 5 3956.416 260 0 3937.014 2 600 +66.5 6 0 25 392 6 3905.405 1 000 −50.3 3892.684 3 400 +57.2 6 0 25 681 5 3862.851 6 000 0 6 0 25 880 6 3810.330 1 400 −61.8 6 0 26 237
a Reference
17 .
b Intensity values are from NBS tables, Ref.
15 (multiplied by 10), except for the values indicated that are from Ref.
17 .
c References
17 –
20 .
d Reference
12 .
e Reference
8 .
Table IV
Isotope shifts in odd levels of Dy i , relative to the 5 I term of the 4f 10 6s 2 configuration.
Odd levela (cm−1 ) J Isotope shift Δν (164−160) (10−3 cm−1 ) 12 007.11 8 +80.7 13 495.94 9 +89.9 14 367.81 7 +85.1 14 512.26 9 −51.0 14 625.64 8 +79.8 15 194.84 7 +78.7 15 567.36 8 −65.3 15 972.35 9 −68.6 16 693.87 9(7) −60.1 16 733.20 8 −69.0 17 687.91 7 +77.2 17 727.15 9 −70.5 18 021.88 8 −69.8 18 172.87 6 +79.4 18 339.80 7 10 18 433.76 7 +18.5 18 528.56 7 0 18 561.20 6 +72.7 18 857.06 7 +73.0 19 092.31 8 +82.9 19 182.66 6 +78.0 19 688.59 8 +85.1 19 907.50 7 −64.0 20 341.32 8 −69.6 20 485.40 7 +81.8 20 554.73 6 +27.9 20 766.29 7 −61.9 20 793.94 8 −75.0 21 529.73 9 −10 21 616.61 7 −55.4 21 675.28 7 +76.3 21 783.42 7 +73.0 21 838.55 9 −67.0 21 899.22 8 −68.8 22 061.29 7 −62.0 22 294.88 5 +19.9 22 524.21 5 0 22 633.23 6 +80.3 23 479.77 7 −70.2 23 552.65 5 −55.6 23 686.81 4 +75.5 23 687.87 6 −49.2 23 717.21 9 −26.3 23 736.60 7(9) −62.6 23 832.08 8 −24.5 23 877.74 8 −32.9 23 985.70 9 −36.6 24 204.18 8 0 24 634.07 5 +80.0 24 708.96 7 −34.5 24 906.86 7 −62.2 24 999.58 8 −62.2 25 012.21 8 0 25 825.83 6 −69.3 25 912.63 5 −67.9 27 427.08 7 −67.0 27 556.34 7 0 27 817.99 8 −35.3 27 834.93 7 −35.6 27 984.50 7 −22.0 28 029.68 8 0 28 177.14 8 0 28 518.30 8 0 30 426.59 6 −10 30 711.70 7 −55.0 30 778.96 6 −54.5 30 840.73 6 0 30 904.89 5 10
a Reference
14 .
Table V
Isotope shifts in Dy i for transitions from odd levels to the ground state 4f 10 6s 2 (5 I 8 ).
Odd levels J Level (cm−1 ) Wavelength (Å) Isotope shift Δν (164−160) (10−3 cm−1 ) 4f 10 (5 I 8 )6s 6p (3 P 1 )a 9 15 972 6259 −68.6 7 16 693 5988 −60.1 4f 10 (5 I 8 )6s 6p (3 P 2 )a 9 17 727 5639 −70.5 4f 10 (5 I 8 )6s 6p (1 P 1 ) 9 23 736 4211 −62.6 4f 10 (5 I 7 )6s 6p (3 P 2 ) 9 21 838 4577 −67.0 8 21 899 4565 −67.7 4f 9 5d 6s 2 (7 I )b 8 12 007 8326 +80.7 4f 9 5d 6s 2 (5 K ) 9 13 495 7407 +89.9 4f 9 5d 6s 2 (7 I ) 7 14 367 6958 +85.1 4f 9 5d 6s 2 (5 I ) 8 14 625 6835 +79.8 4f 9 5d 6s 2 (7 K ) 7 17 687 5652 +78.8
a Reference
16 .
b Reference
14 .
Table VI
Isotope shifts in Er i for transitions from odd levels to the ground state 4f 12 6s 2 (3 H 6 ).
Odd levelsa J Level (cm−1 ) Wavelength (Å) Isotope shift Δν (170−166) (10−3 cm−1 ) 4f 11 (4 I 13/2 )5d 3/2 6s 2 5 15 185 6583 +95.2 7 15 846 6308 +94.9 6 16 070 6221 +26.4 4f 12 (3 H 6 )6s 6p (3 P 0 ) 6 16 321 6125 0 4f 11 (4 I 13/2 )5d 5/2 6s 2 6 17 456 5726 +95.1 7 17 796 5617 +91.0 4f 12 (3 H 6 )6s 6p (3 P 1 ) 6 17 073 5855 −66.2 7 17 157 5826 −65.6 5 17 347 5762 −67.0 4f 12 (3 H 6 )6s 6p (3 P 2 ) 5 19 201 5206 0 6 19 326 5172 −77.4 7 19 816 5044 −61.2 4f 11 (4 I 11/2 )5d 3/2 6s 2 6 19 508 5124 +98.4 4f 11 (4 I 11/2 )5d 5/2 6s 2 7 21 168 4722 +99.7 4f 11 (4 I 9/2 )5d 5/2 6s 2 6 21 702 4606 +89.2 4f 12 (3 H 6 )6s 6p (1 P 1 ) 5 24 083 4151 0 7 24 943 4007 −58.1 6 25 880 3862 0
a References
19 and
22 .