Following an observation by Wyart et al. [
Phys. Scr. 26, 141 (
1982)], we have revised the position
of the 3p63d8
1S0 level in Sr xiii, Y
xiv, Zr xv, Nb xvi, and Mo xvii and have
redetermined the 3p63d8
energy parameters in these ions.
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Intensities are visual estimates of photographic blackening.
Blended with
4p2P3/2–6s2S1/2
transition of Nb xiii.
Table 2
3p63d8
1S0 Levels of Sr
xiii–Mo xvii (in cm−1)
Configuration
Term
J
Sr xiii
Y xiv
Zr xv
Nb xvi
Mo xvii
3p63d8
1S
0
136 720
146 020
155 800
166 070
176 680
Table 3
Energy Parameters (in cm−1) and Mean Errors Δ of
Least-Squares Fits for the
3p63d8
Configurations of Sr xiii, Y xiv, Zr xv, Nb
xvi, and Mo xviia
Ion
Parameter
HF
Fitted
Fitted/HF
Sr xiii
Eav
36 440
34 047 ± 110
F4(3d3d)
214 978
195 749 ± 886
0.911 ± 0.004
F2(3d3d)
136 931
123 012 ± 814
0.898 ± 0.006
α(3d3d)
121 ± 20
ζ3d
6133
6 103 ± 124
0.995 ± 0.020
Δ
292
Y xiv
Eav
39 578
37 084 ± 114
F2(3d3d)
225 641
206 447 ± 928
0.915 ±0.004
F4(3d3d)
143 929
129 622 ± 856
0.901 ± 0.006
α(3d3d)
124 ± 21
ζ3d
7 196
7127 ±129
0.990 ± 0.018
Δ
304
Zr xv
Eav
42 883
40 376 ± 121
F2(3d3d)
236 241
216 969 ± 987
0.918 ± 0.004
F4(3d3d)
150 838
136 286 ± 913
0.904 ± 0.006
α(3d3d)
120 ± 22
ζ3d
8 388
8 284 ± 134
0.988 ± 0.016
Δ
320
Nb xvi
Eav
46 430
43 937 ± 125
F2(3d3d)
246 787
227 526 ± 1027
0.922 ± 0.004
F4(3d3d)
157 711
142 891 ± 957
0.906 ± 0.006
α(3d3d)
118 ±23
ζ3d
9 717
9 596 ± 132
0.988 ± 0.014
Δ
330
Mo xvii
Eav
50 238
47 730 ± 118
F2(3d3d)
257 286
238 000 ± 971
0.925 ± 0.004
F4(3d3d)
164 554
149 128 ±914
0.906 ± 0.006
α(3d3d)
123 ± 22
ζ3d
11 195
11081 ± 116
0.990 ± 0.010
Δ
311
The value for Eav listed in the HF column is
that obtained by diagonalizing the energy matrix with the HF parameters,
3F4 level set at zero.
Table 4
Differences Observed Minus Calculated (in cm−1) between
Observed Level Values and Those Calculated with the Fitted Values of the
Parameters for the
3p63d8
Configurations of Sr xiii, Y xiv, Zr xv, Nb
xvi, and Mo xvii
Configuration
J
Term
Sr xiii
Y xiv
Zr xv
Nb xvi
Mo xvii
3p63d8
0
3P
170
110
00
0
20
1S
80
80
70
70
70
1
3P
130
200
210
260
220
2
3F
210
160
120
90
0
3P
−270
−310
−310
−270
−230
1D
−360
−330
−330
−330
−290
3
3F
170
250
340
380
420
4
3F
−100
−110
−150
−180
−140
1G
−60
−50
−40
−50
−30
Tables (4)
Table 1
3p63d8
1S0–3p53d9
1P1 and
3p63d8
1S0–3p53d9
3D1 Transitions in the Ions Sr
xiii–Mo xviia
Intensities are visual estimates of photographic blackening.
Blended with
4p2P3/2–6s2S1/2
transition of Nb xiii.
Table 2
3p63d8
1S0 Levels of Sr
xiii–Mo xvii (in cm−1)
Configuration
Term
J
Sr xiii
Y xiv
Zr xv
Nb xvi
Mo xvii
3p63d8
1S
0
136 720
146 020
155 800
166 070
176 680
Table 3
Energy Parameters (in cm−1) and Mean Errors Δ of
Least-Squares Fits for the
3p63d8
Configurations of Sr xiii, Y xiv, Zr xv, Nb
xvi, and Mo xviia
Ion
Parameter
HF
Fitted
Fitted/HF
Sr xiii
Eav
36 440
34 047 ± 110
F4(3d3d)
214 978
195 749 ± 886
0.911 ± 0.004
F2(3d3d)
136 931
123 012 ± 814
0.898 ± 0.006
α(3d3d)
121 ± 20
ζ3d
6133
6 103 ± 124
0.995 ± 0.020
Δ
292
Y xiv
Eav
39 578
37 084 ± 114
F2(3d3d)
225 641
206 447 ± 928
0.915 ±0.004
F4(3d3d)
143 929
129 622 ± 856
0.901 ± 0.006
α(3d3d)
124 ± 21
ζ3d
7 196
7127 ±129
0.990 ± 0.018
Δ
304
Zr xv
Eav
42 883
40 376 ± 121
F2(3d3d)
236 241
216 969 ± 987
0.918 ± 0.004
F4(3d3d)
150 838
136 286 ± 913
0.904 ± 0.006
α(3d3d)
120 ± 22
ζ3d
8 388
8 284 ± 134
0.988 ± 0.016
Δ
320
Nb xvi
Eav
46 430
43 937 ± 125
F2(3d3d)
246 787
227 526 ± 1027
0.922 ± 0.004
F4(3d3d)
157 711
142 891 ± 957
0.906 ± 0.006
α(3d3d)
118 ±23
ζ3d
9 717
9 596 ± 132
0.988 ± 0.014
Δ
330
Mo xvii
Eav
50 238
47 730 ± 118
F2(3d3d)
257 286
238 000 ± 971
0.925 ± 0.004
F4(3d3d)
164 554
149 128 ±914
0.906 ± 0.006
α(3d3d)
123 ± 22
ζ3d
11 195
11081 ± 116
0.990 ± 0.010
Δ
311
The value for Eav listed in the HF column is
that obtained by diagonalizing the energy matrix with the HF parameters,
3F4 level set at zero.
Table 4
Differences Observed Minus Calculated (in cm−1) between
Observed Level Values and Those Calculated with the Fitted Values of the
Parameters for the
3p63d8
Configurations of Sr xiii, Y xiv, Zr xv, Nb
xvi, and Mo xvii