Table I
Zeeman results in Er i .
λ E 1 E 2 Type J 1 c J 2 c g 1 g 2 σ ×103 d 4745.270a 6958.33 28026.04b 1 5 5 1.027 1.116 4729.047 8620.57b 29760.56 T 1.112 1.112 (4) 4722.691 0.00 21168.44b 2 6 7 1.165 1.060 <1 4606.605a 0.00 21701.89b 1 6 6 1.172 1.054 4555.695 10750.98 32695.37b T 0.953 0.953 (4) 4522.742a 7696.96b 29801.23 3 7 6 1.254 1.172 4484.477 7696.96b 29989.84 3 7 6 1.264 1.143 2 4424.570 5035.19 27629.92b 1 4 4 1.146 1.262 <1 4424.570a 5035.19 27629.92b 1 4 4 1.143 1.260 4418.699 7176.51b 29801.23 1 6 6 1.301 1.178 <1 4414.352 12377.54 35024.56b 2 (3) (4) 1.086 1.065 (4) 4386.394 7176.51b 29967.86 2 6 7 1.302 1.231 <1 4386.394a 7176.51b 29967.86 2 6 7 1.340 1.268 4382.168 7176.51b 29989.84 1 6 6 1.304 1.141 <1 4313.676 9350.11b 32525.66 1 (8) (8) 1.172 1.166 (4) 4286.555 5035.19 28357.39b 1 4 4 1.149 1.251 1 4286.555a 5035.19 28357.39b 1 4 4 1.150 1.252 4197.426 11401.20b 35218.61 1 (5) (5) 1.206 1.218 (4) 4194.723 13097.91 36930.66b 3 2 3 0.748 1.010 2 4172.215 5035.19 28996.51b 3 4 3 1.149 1.079 2 4164.828 6958.33 30962.14b 2 5 4 1.030 1.146 1 4151.105 0.00 24083.18b 3 6 5 1.172 1.128 2 4151.105a 0.00 24083.18b 3 6 5 1.172 1.130 4131.504a 6958.33 31155.76b 2 4 3 0.924 1.024 4116.359 9655.85b 33942.30 1 10 10 1.198 1.118 <1 4109.324 6958.33 31286.37b T 1.032 1.032 (4) 4098.098 6958.33 31353.01b 2 5 4 1.031 1.128 <1 4098.098a 6958.33 31353.01b 2 5 4 1.028 1.123 4087.632 0.00 24451.14b 1 6 6 1.165 1.058 <1 4087.632 0.00 24451.14b 1 6 6 1.106 1.000 4083.046 6958.33 31442.93b 1 5 5 1.033 1.196 1 4059.507 10750.99 35377.56b 2 4 3 0.937 0.993 <1 4059.507a 10750.99 35377.56b 2 4 3 0.969 1.028 4046.955 10750.99 35453.95b 3 4 5 0.938 1.022 <1 4020.511 6958.33 31823.76b 3 (5) (6) 1.029 1.047 (4) 3987.655 5035.19 30105.50b 1 4 4 1.146 1.093 3 3987.532 13097.91 38168.98b T 1.086 1.086 (4) 3982.331 6958.33 32062.17b 1 5 5 1.032 1.077 1 3977.019 5035.19 30172.56b 1 4 4 1.147 1.255 <1 3964.505 5035.19 30251.89b 3 (4) (5) 1.145 1.170 (4) 3944.420 5035.19 30380.28b 3 (4) (5) 1.151 1.172 (4) 3937.013 0.00 25392.77b 1 6 6 1.165 1.075 2 3918.045 12377.54 37893.25b 2 (3) (4) 1.041 1.024 (4) 3892.684 0.00 25681.93b T 1.175 1.175 (4) 3862.851 0.00 25880.28b 1 (6) (6) 1.160 1.144 (4) 3855.898 5035.19 30962.14b T 1.147 1.147 (4) 3854.514 10557.92b 36494.17 1 (9) (9) 1.149 1.136 (4) 3849.914 8620.57b 34587.81 1 (9) (9) 1.138 1.134 (4) 3827.315 5035.19 31155.76b T 1.145 1.145 (4) 3810.330 0.00 26237.00b T 1.162 1.162 (4) 3803.733 9350.11b 35632.61 T 1.185 1.185 (4) 3761.988 7176.51b 33750.65 1 6 6 1.297 1.099 1 3756.050 7676.96b 34313.11 3 (7) (6) 1.268 1.238 (4) 3664.445 7176.51b 34457.99 1 6 6 1.305 1.184 <1 3664.445a 7176.51b 34457.99 1 6 6 1.172 1.060 3640.223 11887.51b 39350.52 T 1.160 1.160 (4) 3636.409 11557.67b 39049.49 T 1.181 1.181 (4) 3595.835 11557.67b 39359.69 T 1.175 1.175 (4) 3590.764 8620.57b 36461.85 3 (9) (10) 1.159 1.178 (4) 3585.852 0.00 27879.42b 1 (6) (6) 1.163 1.174 (4) 3578.244 11799.78b 39738.47 2 (6) (7) 1.158 1.120 (4) 3570.558 10557.92b 38556.75 T 1.179 1.179 (4) 3565.172 9350.11b 37391.24 2 (8) (9) 1.120 1.093 (4) 3534.341 11557.61b 39843.41 T 1.181 1.181 (4) 3524.525 9350.11b 37714.62 T 1.204 1.204 (4) 3522.518 7176.51b 35557.18 1 6 6 1.300 1.085 1 3505.682 9655.85b 38172.82 2 (10) (11) 1.191 1.186 (4) 3502.779 7176.51b 35717.10 2 6 7 1.302 1.205 <1 3476.313 8620.57b 37378.44 2 9 8 1.132 1.199 3 3462.571 11557.67b 40429.68 T 1.178 1.178 (4) 3446.874 10557.92b 37561.40 1 (9) (9) 1.181 1.191 (4) 3442.684 7696.96b 36735.74 1 (7) (7) 1.266 1.197 <1 3420.948 8620.57b 37843.85 T 1.172 1.172 (4) 3290.661 0.00 30380.28b T 1.172 1.172 (4) 3277.700 11887.51b 42387.92 3 (7) (6) 1.147 1.135 (4) 3181.919a 6958.34 38376.83b 1 6 6 1.131 1.190
a Lindner and Davis.
2
b Level of odd parity.
c Parentheses indicate an assumed value of
J .
d Parentheses indicate an estimated value.
Table II
Er i low even-parity levels (4f 12 6s 2 ).
Configuration E cm −1 g calc g obs a g obs b g obs c 4f 12 6s 2 3 H 6 0.00 1.164 1.166(3) 1.172 1.174(12) 3 F 4 5035.19 1.146 1.147(1) 1.143 1.152(8) 3 H 5 6958.34 1.033 1.031(1) 1.028 1.039(8) 3 H 4 10750.99 0.938 0.938(3) 0.970 0.923(10) 3 F 3 12377.53 1.083 1.064(24) ⋯ ⋯ 3 F 2 13097.91 0.735 0.748 ⋯ ⋯ 1 G 4 19362.11 0.966 ⋯ ⋯ ⋯
a Present work, parenthetic value is
σ × 10
3 .
b Lindner and Davis.
2
c Heilig and Kircher.
8
Table III
Er i low odd-parity levels (4f 11 5d 6s 2 ).
Configuration J E obs cm−1 g calc b g calc c g obs a g obs d 4f 11 (4 I 5/2 )5d 3/2 6s 2 6 7176.50 1.301 1.312 1.302(2) 1.302(6) 7 7696.96 1.261 1.265 1.266(1) 1.269(6) 8 9350.11 1.178 1.185 1.168(31) 1.190(10) 9 8620.56 1.163 1.139 1.139(17) 1.165(10) 4f 11 (4 I 15/2 )5d 5/2 6s 2 5 11401.20 1.206 1.216 1.206 ⋯ 6 11799.78 1.191 1.194 1.17 1.191(15) 7 11887.50 1.148 1.151 1.154(7) 1.153(10) 8 11557.67 1.180 1.182 1.178(2) 1.182(10) 9 10557.91 1.188 1.174 1.169(15) 1.187(12) 10 9655.85 1.197 1.200 1.194(3) 1.200(20)
a Spector.
9
b Racah, Goldschmidt, and Toaff.
10
c Present work, parenthetic value is
σ × 10
3 .
d Heilig and Kircher.
8
Table IV
Er i upper levels of even and odd parity.
E obs cm−1 J a g obs a g obs b g obs c 21168.44° 7 1.060 1.069 21701.89° 6 1.057 1.054 24083.12° 5 1.128 1.130 24451.14° 6 1.058 1.000 25162.55° 5 1.014 25681.93° 1.175 25880.28° (6) 1.144 26237.00° 1.162 27629.92° 4 1.262 1.260 27879.42° (6) 1.174 28036.04° 5 1.116 28129.81° (5) 1.039 28357.39° 4 1.251 1.252 28854.95° 1.178 28996.51° 3 1.079 29760.56 1.112 29801.23 6 1.186 1.172 29967.86 7 1.231 1.235 1.268 29989.84 6 1.141 30105.50° 4 1.093 30172.56° 4 1.255 30251.89° (5) 1.170 1.174 30380.28° (5) 1.172 1.174 30693.29 7 1.243 30962.14° 4 1.147 31155.76° 1.145 1.024 31286.37° 1.032 31353.01° 4 1.128 1.123 31442.93° 5 1.196 31823.76° (6) 1.047 32062.17° (5) 1.078 1.077 32525.66 (8) 1.166 32695.37° 0.953 33485.22° 5 1.038 33613.27° (5) 0.923 33750.65 6 1.099 1.106 33942.30 10 1.118 34153.77 7 1.163 34288.44 8 1.190 34313.11 (6) 1.238 1.225 34447.77 5 1.093 34457.99 6 1.184 1.183 1.060 34587.81 (9) 1.134 34596.40 7 1.024 34756.58 8 1.141 34990.24 8 1.134 35024.56° (4) 1.065 35191.47 7 0.963 35218.61 (5) 1.218 35377.56° 3 0.993 1.002 1.028 35394.60 7 1.129 35453.95° 5 1.022 35557.18 6 1.085 1.087 35632.61 1.185 1.19− 35667.08 6 1.065 35717.10 7 1.205 1.222 35833.79 7 1.048 35963.37 6 1.086 36026.88 6 1.184 36306.26 6 0.973 36418.40 7 1.130 36461.85 (10) 1.178 36494.17 9 1.136 1.18− 36511.22 6 1.173 36712.59 10 1.12− 36735.74 (7) 1.197 36891.17 7 1.091 36930.66° 3 1.010 37062.83 9 1.176 37178.45 7 1.181 37378.44 8 1.199 1.190 37391.24 (9) 1.093 37561.40 (9) 1.191 37645.76 8 1.20− 37714.62 1.204 37843.85 1.172 1.167 37893.25° (4) 1.024 38168.98 1.086 38172.82 (11) 1.186 38253.69 8 1.158 38376.83° 6 1.190 38556.75 1.179 1.19− 39049.49 1.181 1.186 39145.46 7 1.13− 39350.52 1.160 1.151 39359.69 1.175 39432.65 8 1.159 39843.41 1.181 1.182 40429.68 1.178 40833.99 7 1.153 41407.82 6 1.153 42387.92 (6) 1.135
a Current work, parenthetic values of
J indicate assumed values.
b Heilig and Kircher.
8
c Lindner and Davis.
2
° Level of odd parity.