Absorption spectrum of Ba I in the 2100–1560 Å region.
Intensitya Wavelength (Å, vac.) Wave numberb (cm−1 ) Uncert.c (±cm−1 )
n
1
*
n
2
* A (0.48) 2100.d 47 620. ±200. 2.73 2.59 E (0.17) 2065.d 48 425. 200. 2.81 2.66 A (0.42) 2000.d 50 000. 500. 3.0 2.8 E (0.36) 1905.d 52 495. 150. 3.35 3.09 A (0.40) 1880.d 53 190. 150. 3.47 3.19 E (0.37) 1870.d 53 475. 100. 3.53 3.23 A (0.46) 1850.d 54 050. 100. 3.65 3.32 E (0.19) 1845.d 54 200. 100. 3.68 3.35 A (0.48) 1824.d 54 825. 100. 3.83 3.46 E (0.16) 1790.d 55 865. 100. 4.13 3.68 A (0.33) 1765.d 56 660. 100. 4.41 3.87 E (0.20) 1740.d 57 470. 100. 4.77 4.10 A
500
1710.86 58 450. 20. 5.34 4.45 (0.60) E (0.11) 1695.d 59 000. 100. 5.77 4.69 A (0.22) 1690.d 59 170. 100. 5.92 4.77 A (0.25) 1680.d 59 525. 100. 6.29 4.96 A 200 1659.118 60 273. 2. 7.364 5.435 A 20 1653.631 60 473. 2. 7.757 5.588 E 1649.757 60 615. 10. 8.078 5.704 A 10 1649.077 60 640. 10. 8.139 5.725 A 50 1646.280 60 743. 5. 8.405 5.816 E 1643.520 60 845. 2. 8.695 5.909 A 2 1642.872 60 869. 1. 8.767 5.932 A 2 1639.291 61 002. 2. 9.207 6.063 A 5 1636.233 61 116. 1. 9.642 6.182 E 1635.831 61 131. 1. 9.704 6.198 A 50 1631.268 61 302. 2. 10.505 6.393 E 1630.470 61 332. 2. 10.667 6.429 A 30 1629.726 61 360. 5. 10.82 6.463 A 35 1627.941 61 427.3 0.5 11.237 6.547 E 1626.201 61 493. 1. 11.6872 6.6329 A 15 1625.963 61 502. 2. 11.75 6.645 A 25 1623.324 61 602. 1. 12.57 6.783 E 1622.926 61 617.1 0.5 12.710 6.804 A 28 1621.376 61 676. 1. 13.30 6.890 E 1620.436 61 711.79 0.1 13.701 6.9445 A 15 1619.284 61 755.7 0.3 14.246 7.0125 E 1618.415 61 788.84 0.1 14.7039 7.0651 A 2 1617.564 61 821.35 0.1 15.199 7.1180 A 10 1616.899 61 846.78 0.2 15.622 7.1601 E 1616.770 61 851.73 0.1 15.709 7.1684 A 1 1616.266 61 871. 2. 16.06 7.20 A 20 1615.499 61 900.38 0.1 16.646 7.2515 E 1615.424 61 903.26 0.1 16.707 7.2565 A 1 1615.078 61 916.5 0.5 16.99 7.280 A 35 1614.403 61 942.42 0.1 17.607 7.3257 E 1614.308 61 946.05 0.2 17.698 7.3322 A 20 1613.921 61 960.9 0.2 18.086 7.3590 A 50 1613.529 61 975.95 0.1 18.505 7.3865 E 1613.361 61 982.41 0.1 18.695 7.3984 A 25 1613.153 61 990.40 0.2 18.937 7.4131 A 60 1612.800 62 003.95 0.1 19.371 7.4384 E 1612.568 62 012.89 0.1 19.674 7.4552 A 25 1612.432 62 018.10 0.2 19.86 7.4651 A 45 1612.123 62 030.02 0.1 20.297 7.4878 E 1611.877 62 039.47 0.1 20.667 7.5059 A 20 1611.784 62 043.07 0.2 20.81 7.5129 A 35 1611.515 62 053.42 0.1 21.252 7.5330 E 1611.351e 62 059.74 0.2 21.53 7.5453 E 1611.275 62 062.66 0.2 21.67 7.5510 A 10 1611.206 62 065.32 0.1 21.792 7.5563 A 20 1610.980 62 074.01 0.1 22.214 7.5734 E 1610.838 62 079.5 0.5 22.49 7.584 E 1610.759 62 082.55 0.1 22.653 7.5904 A 8 1610.698 62 084.88 0.1 22.777 7.5950 A 15 1610.516 62 091.90 0.1 23.165 7.6091 E 1610.438 62 094.9 0.2 23.34 7.6151 E 1610.302 62 100.14 0.2 23.65 7.6256 A 5 1610.247 62 102.27 0.1 23.78 7.6300 A 3 1610.115 62 107.35 0.2 24.09 7.6403 E 1610.049 62 109.93 0.2 24.26 7.6455 E 1609.907 62 115.40 0.2 24.62 7.6567 A 3 1609.857 62 117.33 0.2 24.76 7.6606 A 2 1609.794e 62 119.76 0.2 24.92 7.6656 E 1609.535 62 129.74 0.2 25.66 7.6862 A 1 1608.953 62 152.22 0.2 27.59 7.7331 A 3 1608.848 62 156.28 0.1 27.98 7.7417 A 5 1608.703 62 161.88 0.1 28.56 7.7535 A 2 1608.614 62 165.33 0.1 28.94 7.7609 A 8 1608.481 62 170.45 0.1 29.52 7.7718 A 3 1608.398 62 173.67 0.1 29.90 7.7787 A 10 1608.279 62 178.25 0.1 30.48 7.7885 A 5 1608.200 62 181.33 0.1 30.88 7.7952 A 11 1608.093 62 185.46 0.1 31.45 7.8041 A 5 1608.013 62 188.57 0.1 31.90 7.8108 A 12 1607.923 62 192.05 0.1 32.43 7.8184 A 4 1607.847 62 194.98 0.1 32.89 7.8248 A 13 1607.766 62 198.12 0.1 33.42 7.8317 A 3 1607.694 62 200.91 0.1 33.90 7.8378 A 14 1607.623 62 203.63 0.1 34.39 7.8438 A 3 1607.558 62 206.15 0.1 34.87 7.8493 A 15 1607.491 62 208.75 0.1 35.38 7.8550 A 2 1607.429 62 211.16 0.1 35.88 7.8604 A 14 1607.370 62 213.43 0.1 36.37 7.8654 A 2 1607.311 62 215.70 0.2 36.88 7.8704 A 13 1607.260 62 217.70 0.1 37.34 7.8749 A 1 1607.202 62 219.94 0.1 37.88 7.8799 A 12 1607.154 62 221.78 0.1 38.35 7.8840 A 1 1607.102 62 223.79 0.1 38.88 7.8885 A 10 1607.060 62 225.42 0.1 39.32 7.8921 A 1 1607.008 62 227.44 0.1 39.89 7.8966 A 8 1606.971 62 228.89 0.1 40.32 7.8999 A 1 1606.919 62 230.88 0.2 40.92 7.9044 A 6 1606.888 62 232.09 0.1 41.31 7.9071 A 5 1606.811 62 235.08 0.1 42.30 7.9138 A 4 1606.739 62 237.85 0.1 43.29 7.9201 A 4 1606.673 62 240.41 0.1 44.27 7.9259 A 3 1606.611 62 242.81 0.1 45.25 7.9313 A 13 1606.553 62 245.06 0.1 46.23 7.9365 A 2 1606.498 62 247.19 0.1 47.22 7.9413 A 2 1606.446 62 249.21 0.1 48.22 7.9459 A 2 1606.397 62 251.10 0.1 49.2 7.9503 A 2 1606.352 62 252.84 0.1 50.2 7.9542 A 1 1606.309 62 254.53 0.1 51.2 7.9581 A 1 1606.268 62 256.13 0.2 52.2 7.9618 A 1 1606.229 62 257.64 0.1 53.2 7.9653 A 1 1606.195 62 258.95 0.1 54.1 7.9683 A 1 1606.157 62 260.42 0.2 55.2 7.9717 A 1 1606.126 62 261.61 0.2 56.2 7.9744 A 1 1606.098 62 262.71 0.2 57.1 7.9770 A 1 1606.066 62 263.95 0.2 58.2 7.9798 A 70 1601.743 62 432. 5. 8.40 E 1599.488 62 520. 5. 8.65 A 50 1598.082 62 575. 10. 8.81 A 75 1593.752 62 745. 5. 9.40 E 1591.976 62 815. 5. 9.68 A 45 1591.166 62 847. 5. 9.81 A 60 1588.007 62 972. 5. 10.40 E 1586.672 63 025. 2. 10.679 A 40 1586.169 63 045. 5. 10.79 A 50 1583.732 63 142. 2. 11.394 E 1582.729 63 182. 1. 11.674 A 35 1582.278 63 200. 5. 11.81 A 45 1580.453 63 273. 2. 12.40 E 1579.654 63 305. 2. 12.68 A 30 1579.330 63 318. 5. 12.80 A 40 1577.869 63 376.6 0.5 13.405 E 1577.280 63 400.3 0.5 13.673 A 25 1576.964 63 413. 3. 13.82 A 35 1575.840 63 458.2 0.5 14.40 E 1575.356 63 477.7 0.5 14.68 A 20 1575.101 63 488. 3. 14.82 A 33 1574.191 63 524.7 0.3 15.402 E 1573.803 63 540.37 0.2 15.670 A 18 1573.589 63 549.0 2. 15.82 A 30 1572.841 63 579.20 0.2 16.399 E 1572.514 63 592.44 0.2 16.672 A 15 1572.352 63 599. 2. 16.81 A 28 1571.716 63 624.73 0.2 17.398 E 1571.440 63 635.91 0.2 17.673 A 13 1571.289 63 642. 1. 17.83 A 25 1570.777 63 662.78 0.2 18.390 E 1570.536 63 672.51 0.2 18.672 A 10 1570.401 63 678. 1. 18.84 A 23 1569.965 63 695.68 0.1 19.400 E 1569.770 63 703.59 0.2 19.67 A 8 1569.669 63 707.7 0.5 19.81 A 20 1569.281 63 723.44 0.1 20.395 E 1569.110 63 730.39 0.1 20.669 A 7 1569.016 63 734.2 0.3 20.82 A 19 1568.688 63 747.52 0.1 21.395 E 1568.540 63 753.55 0.1 21.669 A 6 1568.456 63 756.97 0.2 21.83 A 18 1568.174 63 768.42 0.1 22.393 E 1568.048 63 773.56 0.1 22.661 A 5 1567.967 63 776.85 0.1 22.837 A 18 1567.725 63 786.70 0.1 23.391 E 1567.612 63 791.28 0.1 23.663 A 5 1567.544 63 794.06 0.1 23.833 A 17 1567.328 63 802.84 0.1 24.39 E 1567.230 63 806.84 0.1 24.66 A 4 1567.168 63 809.36 0.1 24.84 A 16 1566.979 63 817.05 0.1 25.39 E 1566.892 63 820.60 0.1 25.66 A 4 1566.837 63 822.85 0.2 25.84 A 15 1566.667 63 829.76 0.1 26.40 E 1566.591 63 832.86 0.1 26.66 A 3 1566.539 63 834.98 0.2 26.84 A 15 1566.392 63 841.00 0.1 27.39 E 1566.322 63 843.82 0.1 27.66 A 3 1566.276 63 845.69 0.2 27.84 A 14 1566.144 63 851.07 0.1 28.39 E 1566.083 63 853.58 0.1 28.65 A 3 1566.039 63 855.35 0.2 28.84 A 14 1565.921 63 860.17 0.1 29.38 E 1565.867 63 862.38 0.1 29.64 A 2 1565.827 63 864.03 0.2 29.84 A 13 1565.718 63 868.45 0.1 30.39 E 1565.669 63 870.47 0.1 30.65 A 2 1565.630 63 872.04 0.2 30.86 A 12 1565.535 63 875.91 0.1 31.39 E 1565.492 63 877.70 0.1 31.65 A 1 1565.455 63 879.18 0.2 31.86 A 11 1565.371 63 882.61 0.1 32.38 E 1565.330 63 884.31 0.1 32.65 A 1 1565.297 63 885.63 0.2 32.86 A 11 1565.220 63 888.78 0.1 33.38 E 1565.182 63 890.33 0.1 33.65 A 1 1565.152 63 891.56 0.2 33.86 A 10 1565.082 63 894.42 0.1 34.38 E 1565.045 63 895.91 0.1 34.66 A 1 1565.019 63 897.00 0.2 34.87 A 10 1564.956 63 899.58 0.1 35.38 E 1564.923 63 900.90 0.1 35.65 A 1 1564.897 63 901.96 0.2 35.87 A 9 1564.839 63 904.33 0.1 36.38 E 1564.808 63 905.60 0.1 36.66 A 1 1564.785 63 906.55 0.2 36.87 A 8 1564.733 63 908.68 0.1 37.37 E 1564.704 63 909.86 0.1 37.65 A 1 1564.683 63 910.70 0.2 37.86 A 8 1564.634 63 912.70 0.1 38.36 E 1564.604 63 913.94 0.2 38.69 A 1 1564.588 63 914.59 0.2 38.86 A 7 1564.543 63 916.42 0.1 39.36 E 1564.520 63 917.35 0.1 39.62 A 1 1564.497 63 918.31 0.2 39.89 A 6 1564.459 63 919.85 0.1 40.35 E 1564.434 63 920.88 0.1 40.66 A 1 1564.418 63 921.55 0.2 40.9 A 6 1564.380 63 923.09 0.1 41.35 E 1564.356 63 924.08 0.1 41.68 A 1 1564.341 63 924.70 0.2 41.9 A 5 1564.306 63 926.10 0.1 42.36 E 1564.283 63 927.07 0.1 42.70 A 1 1564.284 63 927.7 0.3 42.9 A 5 1564.239 63 928.84 0.1 43.34 E 1564.216 63 929.80 0.1 43.70 A 1 1564.201 63 930.4 0.3 43.9 A 4 1564.177 63 931.38 0.2 44.3 E 1564.154 63 932.34 0.2 44.7 A 1 1564.140 63 932.9 0.3 44.9 A 3 1564.118 63 933.81 0.1 45.31 E 1564.096 63 934.71 0.1 45.70 A 1 1564.081 63 935.3 0.3 45.9 A 3 1564.063 63 936.05 0.1 46.29 E 1564.039 63 937.02 0.1 46.73 A 1 1564.027 63 937.5 0.3 46.9 A 2 1564.010 63 938.22 0.1 47.30 E 1563.986 63 939.19 0.1 47.78 A 2 1563.963 63 940.13 0.1 48.25 E 1563.944 63 940.91 0.1 48.7 A 2 1563.916 63 942.07 0.1 49.3 E 1563.894 63 942.95 0.1 49.8 A 1 1563.877 63 943.66 10.1 50.2 E 1563.853 63 944.64 0.2 50.7 A 1 1563.830 63 945.58 0.1 51.3 E 1563.811 63 946.35 0.2 51.8 A 1 1563.793 63 947.10 0.2 52.3 E 1563.775 63 947.81 0.2 52.7 A 1 1563.759 63 948.46 0.1 53.2 E 1563.739 63 949.31 0.2 53.8 A 1 1563.722 63 950.00 0.2 54.3
a Absorption peaks and transmission windows are labeled A and E, respectively. Relative transition intensities for absorption features are based on visual estimates (see text) while values in parentheses are cross sections in Mb (10
−18 cm
2 ) taken from Fig. 2 of Ref.
8 .
b Since the ground 6
s 2 1 S 0 level is taken as the zero of energy for all Ba
i levels, the energy of the upper
J = 1
o level (or feature) and the wave number of the transition in Table I are identical. The
n
1
* and
n
2
* values appearing to the right of each wave-number position are the effective quantum numbers for the feature based on the ionization energies for the 6
p 2 P o 1/2 and
6
p
P
2
3
/
2
o ion core levels, respectively.
c Uncertainty estimates are included with each reported wave number because there are marked differences in the diffuseness and shapes of the observed features (see
Figs. 1 and
4 ).
d Taken from Fig. 2 of Ref.
8 .
e Shoulder measurement.