Department of Physics, University of California, Berkeley, Berkeley, California 94720 USA
S. P. Davis is a visiting astronomer, Kitt Peak National Solar Observatory, National Optical Astronomy Observatories, operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.
The 3Π−1Σ+ band systems of InI were observed in both emission and absorption. Twenty new bandheads were observed. Rotational parameters for the 3Π0(0+) state were determined from an analysis of seven bands. Vibrational parameters for the 3Π1(1),3Π0(0+), and 1Π+(0+) states have been improved substantially.
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Units are inverse centimeters.
Key: a, grating spectra; b, Fourier-transform spectra; c, Ref. 2; d, Ref. 3; *, isotopic band; bold, identified by us.
Wehrli4 identified the 23 187.30-cm−1 transition as the R(7–13) head. He did not observe the 23 194.18-cm−1 transition, which fits better in the Deslandres table.
Wehrli and Miescher2 questioned this identification, which we confirmed on the basis of our rotational analysis.
The accuracy of the table does not permit us to decide between the 24 411.11 and the 24 410.52-cm−1 lines as the R(3–6) head.
These two identifications were made because the wave numbers fitted into the Deslandres table. The bands seem too intense for their positions in the table, and neither one fits properly within the overall shape of the Condon parabola.
Wehrli and Miescher2 were uncertain about these identifications. They fit reasonably well and without ambiguity into our tables.
We found no evidence to help us to resolve this ambiguity, given by Wehrli and Miescher.2
The head does not fit into the R(3–4) cell of the table.
We do not observe either of these two heads and do not believe that they can be the R(8–4) and R(7–3) heads of system A. They do not fall within the Condon parabola. Moreover, the difference between their wave numbers is 51 cm−1, whereas the wave-number difference of other pairs of heads located nearby and having the same relative positions is 41 cm−1
Table 2
Band Origins for the Indium Iodide A System
Band
Origin (cm−1)
(0–0)
24 393.3828 ± 0.0010
(1–0)
24 548.6253 ± 0.0007
(0–1)
24 217.117 ±0.0014
(5–7)
23 918.6482 ± 0.0009
(10–12)
23 722.0598 ±0.0026
(10–14)
23 386.2497 ± 0.0048
(12–14)
23 617.1273 ± 0.0032
Table 3
Vibrational Parameters for the Indium Iodide X, A, and B Statesa
State
νe
ωe
ωexe
ωeye
X
176.8251 ± 0.0036
.2752 ±.0010
−.002719 ±.000045
A
24 403.1395 ± 0.0023
157.7898 ± 0.0019
1.2148 ±.0011
−036232 ±.000064
B
25 051.02 ± 0.46
145.24 ± 0.54
1.58 ±.18
−.077 ±.017
Units are inverse centimeters.
Table 4
Wave Numbers of Rotational Lines in the (0–0) Band of the A–X Transition
J
P(J) (cm−1)
R(J) (cm−1)
25
—
24 396.0713
27
—
24 396.3546
33
—
24 397.2009
34
24 392.1405
—
38
—
24 397.9937
39
—
24 398.1458
40
—
24 398.3090
41
—
24 398.4655
42
—
24 398.6330
43
—
24 398.8024
44
—
24 398.9717
45
—
24 399.1693
46
—
24 399.3499
47
—
24 399.5234
48
—
24 399.6876
49
—
24 399.8870
50
—
24 400.0721
51
—
24 400.2601
52
—
24 400.4615
53
—
24 400.6409
54
—
24 400.8589
55
—
24 401.0459
56
—
24 401.2350
57
—
24 401.4342
58
24 392.7640
24 401.6310
59
24 392.8171
24 401.8316
60
—
24 402.0362
61
24 392.9422
24 402.2515
62
—
24 402.4718
63
—
24 402.6792
64
24 393.1215
24 402.8969
65
24 323.2005
24 403.1159
66
24 393.2635
24 403.3335
67
24 393.3442
24 403.5555
68
24 393.4096
24 403.7732
69
24 393.4822
24 404.0204
70
24 393.5583
24 404.2425
71
24 393.6383
24 404.4671
72
24 393.7146
24 404.6872
73
24 393.7994
24 404.9178
74
24 393.8908
24 405.1657
75
24 393.9727
24 405.3953
76
24 394.0621
24 405.6413
77
24 394.1552
24 405.8838
78
24 394.2508
24 406.1263
79
24 394.3456
24 406.3745
80
24 394.4463
24 406.6246
81
24 394.5469
24 406.8722
82
24 394.6426
24 407.1303
83
24 394.7525
24 407.3768
84
24 394.8606
24 407.6285
85
24 394.9700
24 407.8909
86
24 395.0794
24 408.1554
87
24 395.1935
24 408.4110
88
24 395.3004
24 408.6815
89
—
24 408.9428
90
24 395.5439
24 409.2078
91
24 395.6574
24 409.4810
92
24 395.7765
24 409.7573
93
24 395.9085
24 410.0300
94
24 396.0273
24 410.2939
95
24 396.1552
24 410.5741
96
24 396.2865
24 410.8616
97
24 396.4179
24 411.1386
98
24 396.5508
24 411.4188
99
24 396.6792
24 411.7084
100
24 396 8133
94 411.9958
101
24 396.9571
24 412.2892
102
—
24 412.5737
103
24 397.2471
24 412.8642
104
—
24 413.1627
105
24 397.5312
24 413.4655
106
24 397.6806
24 413.7582
107
24 397.8372
24 414.0634
108
—
24 414.3630
109
—
24 414.6724
110
—
24 414.9701
111
—
24 415.2784
112
—
24 415.5893
113
—
24 415.8978
114
—
24 416.2167
115
24 399.1190
24 416.5214
116
24 399.2842
24 416.8463
117
24 399.4579
24 417.1589
118
24 399.6307
24 417.4850
119
24 399.8006
24 417.8007
120
24 399.9716
24 418.1268
121
24 400.1536
24 418.4521
122
24 400.3143
24 418.7931
123
24 400.5072
24 419.1085
124
24 400.6913
24 419.4298
125
—
24 419.7677
126
—
24 420.1031
127
—
24 420.4428
128
—
24 420.7731
129
—
24 421.1138
130
—
24 421.4458
131
—
24 421.7924
132
24 402.1881
24 422.1394
133
24 402.4092
24 422.4779
134
24 402.5998
24 422.8347
135
24 402.8001
24 423.1772
136
24 402.9969
24 423.5247
137
24 403.2058
24 423.8803
138
24 403.4135
24 424.2326
139
24 403.6212
24 424.5877
140
24 403.8281
24 424.9318
141
—
24 425.2985
142
—
24 425.6602
143
—
24 426.0287
144
—
24 426.3771
145
—
24 426.7433
146
—
24 426.1115
147
24 405.3288
24 427.4737
148
24 405.5583
24 427.8436
149
24 405.7779
24 428.2090
150
24 406.0082
24 428.5956
151
24 406.2189
24 428.9640
152
24 406.4631
24 428.3343
153
24 406.6926
24 429.7054
154
—
24 430.0877
155
—
24 430.4604
156
—
24 430.8420
157
—
24 431.2200
158
24 407.8379
24 431.6115
159
24 408.0806
24 431.9802
160
24 408.3183
24 432.3663
161
24 408.5649
24 432.7464
162
24 408.7950
24 433.1382
163
24 409.0358
24 433.5310
164
24 409.2957
24 433.9190
165
24 409.5366
24 434.3124
166
—
24 434.6923
167
—
24 435.0965
168
—
24 435.4932
169
24 410.5103
24 435.8849
170
24 410.7796
24 436.2789
171
—
24 436.6862
172
24 411.2734
24 437.0734
173
24 411.5464
24 437.4817
174
—
24 437.8733
175
—
24 437.2722
176
—
24 438.6791
177
—
24 438.0867
178
—
24 439.4961
179
—
24 439.8933
180
—
24 440.3013
181
—
24 440.7081
182
—
24 441.1308
183
—
24 441.5164
184
—
24 441.9458
185
—
24 442.3612
186
—
24 442.7637
187
—
24 443.1726
188
—
24 443.5924
189
—
24 444.0239
190
—
24 444.4212
191
—
24 444.8509
192
—
24 445.2819
193
—
24 445.6841
194
—
24 446.1051
195
—
24 446.5286
196
—
24 446.9505
197
—
24 447.3747
198
—
24 447.7843
199
—
24 448.2238
200
—
24 448.6427
201
—
24 449.0685
202
—
24 449.4964
203
—
24 449.9230
204
—
24 450.3411
205
—
24 450.7738
206
—
24 451.2039
207
—
24 451.6334
208
—
24 452.0615
209
—
24 452.4920
210
—
24 452.9238
211
—
24 453.3512
212
—
24 453.7843
213
—
24 454.2146
214
—
24 454.6499
215
—
24 455.0808
216
—
24 455.5134
217
—
24 455.9490
218
—
24 456.3803
219
—
24 456.8149
220
—
24 457.2488
221
—
24 457.6825
222
—
24 458.1155
223
—
24 458.5486
224
—
24 458.9814
225
—
24 459.4158
226
—
24 459.8529
227
—
24 460.2922
228
—
24 460.7276
229
—
24 461.1611
230
—
24 461.5947
231
—
24 462.0366
232
—
24 462.4617
233
—
24 462.9024
234
—
24 463.3403
235
—
24 463.7625
242
—
24 466.8098
243
—
24 467.2493
244
—
24 467.6904
245
—
24 468.1150
246
—
24 468.5469
247
—
24 468.9780
248
—
24 469.4173
249
—
24 469.8396
250
—
24 470.2597
251
—
24 470.6886
252
—
24 471.1298
253
—
24 471.5922
254
—
24 471.9865
Table 5
Rotational Parameters for the Indium Iodide X and A Statesa
Units are inverse centimeters.
Key: a, grating spectra; b, Fourier-transform spectra; c, Ref. 2; d, Ref. 3; *, isotopic band; bold, identified by us.
Wehrli4 identified the 23 187.30-cm−1 transition as the R(7–13) head. He did not observe the 23 194.18-cm−1 transition, which fits better in the Deslandres table.
Wehrli and Miescher2 questioned this identification, which we confirmed on the basis of our rotational analysis.
The accuracy of the table does not permit us to decide between the 24 411.11 and the 24 410.52-cm−1 lines as the R(3–6) head.
These two identifications were made because the wave numbers fitted into the Deslandres table. The bands seem too intense for their positions in the table, and neither one fits properly within the overall shape of the Condon parabola.
Wehrli and Miescher2 were uncertain about these identifications. They fit reasonably well and without ambiguity into our tables.
We found no evidence to help us to resolve this ambiguity, given by Wehrli and Miescher.2
The head does not fit into the R(3–4) cell of the table.
We do not observe either of these two heads and do not believe that they can be the R(8–4) and R(7–3) heads of system A. They do not fall within the Condon parabola. Moreover, the difference between their wave numbers is 51 cm−1, whereas the wave-number difference of other pairs of heads located nearby and having the same relative positions is 41 cm−1
Table 2
Band Origins for the Indium Iodide A System
Band
Origin (cm−1)
(0–0)
24 393.3828 ± 0.0010
(1–0)
24 548.6253 ± 0.0007
(0–1)
24 217.117 ±0.0014
(5–7)
23 918.6482 ± 0.0009
(10–12)
23 722.0598 ±0.0026
(10–14)
23 386.2497 ± 0.0048
(12–14)
23 617.1273 ± 0.0032
Table 3
Vibrational Parameters for the Indium Iodide X, A, and B Statesa
State
νe
ωe
ωexe
ωeye
X
176.8251 ± 0.0036
.2752 ±.0010
−.002719 ±.000045
A
24 403.1395 ± 0.0023
157.7898 ± 0.0019
1.2148 ±.0011
−036232 ±.000064
B
25 051.02 ± 0.46
145.24 ± 0.54
1.58 ±.18
−.077 ±.017
Units are inverse centimeters.
Table 4
Wave Numbers of Rotational Lines in the (0–0) Band of the A–X Transition
J
P(J) (cm−1)
R(J) (cm−1)
25
—
24 396.0713
27
—
24 396.3546
33
—
24 397.2009
34
24 392.1405
—
38
—
24 397.9937
39
—
24 398.1458
40
—
24 398.3090
41
—
24 398.4655
42
—
24 398.6330
43
—
24 398.8024
44
—
24 398.9717
45
—
24 399.1693
46
—
24 399.3499
47
—
24 399.5234
48
—
24 399.6876
49
—
24 399.8870
50
—
24 400.0721
51
—
24 400.2601
52
—
24 400.4615
53
—
24 400.6409
54
—
24 400.8589
55
—
24 401.0459
56
—
24 401.2350
57
—
24 401.4342
58
24 392.7640
24 401.6310
59
24 392.8171
24 401.8316
60
—
24 402.0362
61
24 392.9422
24 402.2515
62
—
24 402.4718
63
—
24 402.6792
64
24 393.1215
24 402.8969
65
24 323.2005
24 403.1159
66
24 393.2635
24 403.3335
67
24 393.3442
24 403.5555
68
24 393.4096
24 403.7732
69
24 393.4822
24 404.0204
70
24 393.5583
24 404.2425
71
24 393.6383
24 404.4671
72
24 393.7146
24 404.6872
73
24 393.7994
24 404.9178
74
24 393.8908
24 405.1657
75
24 393.9727
24 405.3953
76
24 394.0621
24 405.6413
77
24 394.1552
24 405.8838
78
24 394.2508
24 406.1263
79
24 394.3456
24 406.3745
80
24 394.4463
24 406.6246
81
24 394.5469
24 406.8722
82
24 394.6426
24 407.1303
83
24 394.7525
24 407.3768
84
24 394.8606
24 407.6285
85
24 394.9700
24 407.8909
86
24 395.0794
24 408.1554
87
24 395.1935
24 408.4110
88
24 395.3004
24 408.6815
89
—
24 408.9428
90
24 395.5439
24 409.2078
91
24 395.6574
24 409.4810
92
24 395.7765
24 409.7573
93
24 395.9085
24 410.0300
94
24 396.0273
24 410.2939
95
24 396.1552
24 410.5741
96
24 396.2865
24 410.8616
97
24 396.4179
24 411.1386
98
24 396.5508
24 411.4188
99
24 396.6792
24 411.7084
100
24 396 8133
94 411.9958
101
24 396.9571
24 412.2892
102
—
24 412.5737
103
24 397.2471
24 412.8642
104
—
24 413.1627
105
24 397.5312
24 413.4655
106
24 397.6806
24 413.7582
107
24 397.8372
24 414.0634
108
—
24 414.3630
109
—
24 414.6724
110
—
24 414.9701
111
—
24 415.2784
112
—
24 415.5893
113
—
24 415.8978
114
—
24 416.2167
115
24 399.1190
24 416.5214
116
24 399.2842
24 416.8463
117
24 399.4579
24 417.1589
118
24 399.6307
24 417.4850
119
24 399.8006
24 417.8007
120
24 399.9716
24 418.1268
121
24 400.1536
24 418.4521
122
24 400.3143
24 418.7931
123
24 400.5072
24 419.1085
124
24 400.6913
24 419.4298
125
—
24 419.7677
126
—
24 420.1031
127
—
24 420.4428
128
—
24 420.7731
129
—
24 421.1138
130
—
24 421.4458
131
—
24 421.7924
132
24 402.1881
24 422.1394
133
24 402.4092
24 422.4779
134
24 402.5998
24 422.8347
135
24 402.8001
24 423.1772
136
24 402.9969
24 423.5247
137
24 403.2058
24 423.8803
138
24 403.4135
24 424.2326
139
24 403.6212
24 424.5877
140
24 403.8281
24 424.9318
141
—
24 425.2985
142
—
24 425.6602
143
—
24 426.0287
144
—
24 426.3771
145
—
24 426.7433
146
—
24 426.1115
147
24 405.3288
24 427.4737
148
24 405.5583
24 427.8436
149
24 405.7779
24 428.2090
150
24 406.0082
24 428.5956
151
24 406.2189
24 428.9640
152
24 406.4631
24 428.3343
153
24 406.6926
24 429.7054
154
—
24 430.0877
155
—
24 430.4604
156
—
24 430.8420
157
—
24 431.2200
158
24 407.8379
24 431.6115
159
24 408.0806
24 431.9802
160
24 408.3183
24 432.3663
161
24 408.5649
24 432.7464
162
24 408.7950
24 433.1382
163
24 409.0358
24 433.5310
164
24 409.2957
24 433.9190
165
24 409.5366
24 434.3124
166
—
24 434.6923
167
—
24 435.0965
168
—
24 435.4932
169
24 410.5103
24 435.8849
170
24 410.7796
24 436.2789
171
—
24 436.6862
172
24 411.2734
24 437.0734
173
24 411.5464
24 437.4817
174
—
24 437.8733
175
—
24 437.2722
176
—
24 438.6791
177
—
24 438.0867
178
—
24 439.4961
179
—
24 439.8933
180
—
24 440.3013
181
—
24 440.7081
182
—
24 441.1308
183
—
24 441.5164
184
—
24 441.9458
185
—
24 442.3612
186
—
24 442.7637
187
—
24 443.1726
188
—
24 443.5924
189
—
24 444.0239
190
—
24 444.4212
191
—
24 444.8509
192
—
24 445.2819
193
—
24 445.6841
194
—
24 446.1051
195
—
24 446.5286
196
—
24 446.9505
197
—
24 447.3747
198
—
24 447.7843
199
—
24 448.2238
200
—
24 448.6427
201
—
24 449.0685
202
—
24 449.4964
203
—
24 449.9230
204
—
24 450.3411
205
—
24 450.7738
206
—
24 451.2039
207
—
24 451.6334
208
—
24 452.0615
209
—
24 452.4920
210
—
24 452.9238
211
—
24 453.3512
212
—
24 453.7843
213
—
24 454.2146
214
—
24 454.6499
215
—
24 455.0808
216
—
24 455.5134
217
—
24 455.9490
218
—
24 456.3803
219
—
24 456.8149
220
—
24 457.2488
221
—
24 457.6825
222
—
24 458.1155
223
—
24 458.5486
224
—
24 458.9814
225
—
24 459.4158
226
—
24 459.8529
227
—
24 460.2922
228
—
24 460.7276
229
—
24 461.1611
230
—
24 461.5947
231
—
24 462.0366
232
—
24 462.4617
233
—
24 462.9024
234
—
24 463.3403
235
—
24 463.7625
242
—
24 466.8098
243
—
24 467.2493
244
—
24 467.6904
245
—
24 468.1150
246
—
24 468.5469
247
—
24 468.9780
248
—
24 469.4173
249
—
24 469.8396
250
—
24 470.2597
251
—
24 470.6886
252
—
24 471.1298
253
—
24 471.5922
254
—
24 471.9865
Table 5
Rotational Parameters for the Indium Iodide X and A Statesa