Thin-film spectra of solid NH3 at a resolution of 1 cm−1 were used to determine its absorption coefficient over the range 50–7000 cm−1. The thin films were formed inside a liquid N2 cooled dewar using a variety of substrates and dewar windows. The spectra were recorded with two Fourier spectrometers, one covering the range from 1 to 4 μm and the other from 2.6 to 200 μm. The thickness of the films was measured with a laser interference technique. The absorption coefficients were determined by application of Lambert’s law and by a fitting procedure to the observed spectra using thin-film theory. Good agreement was found with the absorption coefficients recently determined by other investigators over a more restricted wavelength range. A metastable phase was observed near a temperature of 90°K and its absorption coefficient is reported. No other major spectral changes with temperature were noted for the range 88–120°K.
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Calculated from the liquid value of Robertson and Williams15 and converted to solid using the Lorentz correction.
Calculated using the 2.08 μm value and the Kramers-Kronig dispersion relation.
TABLE III
Absorption coefficient of NH3 solid. T = 88K
α (cm −1)
Uncertainty
k
50
10
±10
0.016
60
14
±10
0.018
70
30
±15
0.034
(79)
350
±100
0.35
80
280
±100
0.28
90
10
±10
0.008 8
100
10
±10
0.008 0
110
16
±10
0.012
120
45
±20
0.030
130
120
±40
0.073
(139)
750
±100
0.43
140
690
±100
0.39
150
80
±30
0.042
160
80
±30
0.040
170
90
±30
0.042
180
190
±60
0.084
190
90
±30
0.038
200
100
±30
0.040
210
110
±30
0.042
220
120
±40
0.043
230
140
±40
0.048
240
180
±40
0.060
250
240
±50
0.76
(257)
340
±50
0.11
260
280
±50
0.086
270
170
±40
0.050
280
160
±40
0.045
290
200
±50
0.055
300
300
±50
0.080
310
450
±60
0.12
320
850
±100
0.21
330
1 700
±300
0.41
340
3 300
±400
0.77
350
7 000
±500
1.6
360
13 000
±800
2.9
(363)
14 000
±800
3.1
370
12 000
±800
2.6
380
8 600
±500
1.8
390
5 900
±400
1.2
400
4 300
±300
0.86
410
3 100
±300
0.60
420
2 300
±200
0.44
430
1 800
±200
0.33
440
1 200
±200
0.22
450
940
±150
0.17
460
770
±150
0.13
470
700
±140
0.12
480
620
±130
0.10
490
560
±130
0.091
500
520
±120
0.083
510
530
±120
0.083
520
850
±150
0.13
530
1500
±200
0.23
(532)
1600
±200
0.24
540
1300
±200
0.19
550
940
±150
0.14
560
720
±100
0.10
570
580
±100
0.081
580
500
±120
0.069
590
420
±110
0.057
600
350
±100
0.046
610
270
±80
0.035
620
200
±70
0.026
630
160
±50
0.020
640
140
±40
0.017
650
130
±40
0.016
660
130
±40
0.016
670
150
±40
0.018
680
150
±40
0.018
690
140
±40
0.016
700
130
±40
0.015
710
120
±30
0.013
720
110
±30
0.012
730
100
±30
0.011
740
80
±20
0.008 6
750
75
±20
0.008 0
760
70
±20
0.007 3
770
75
±20
0.007 8
780
90
±30
0.009 2
790
100
±30
0.010
800
110
±30
0.011
810
90
±30
0.008 8
820
85
±20
0.008 2
830
80
±20
0.007 7
840
80
±20
0.007 6
850
80
±20
0.007 5
860
75
±20
0.006 9
870
75
±20
0.006 9
880
75
±20
0.006 8
890
70
±20
0.006 3
900
70
±30
0.006 2
910
70
±30
0.006 1
920
70
±30
0.006 1
930
70
±30
0.006 0
940
75
±30
0.006 3
950
85
±30
0.007 1
960
95
±30
0.007 9
970
110
±40
0.009 0
980
140
±40
0.011
990
190
±50
0.015
1000
200
±30
0.016
1010
300
±40
0.024
1020
480
±50
0.037
1030
800
±100
0.062
1040
2 000
±300
0.15
1050
9 000
±1000
0.68
(1057)
40 000
±5000
3.0
1060
20 000
±4000
1.5
1070
10 000
±1000
0.74
1080
3 500
±500
0.26
1090
1 000
±100
0.073
(1094)
950
±100
0.069
1100
1 000
±100
0.072
1110
770
±80
0.055
1120
350
±40
0.025
1130
260
±10
0.018
1140
280
±10
0.020
1150
200
±10
0.014
1160
220
±10
0.015
1170
200
±10
0.014
1180
190
±10
0.013
1190
190
±10
0.013
1200
180
±10
0.012
1210
190
±10
0.012
1220
170
±10
0.011
1230
140
±10
0.009 1
1240
120
±10
0.007 7
1250
130
±10
0.008 3
1260
70
±10
0.004 4
1270
55
±10
0.003 4
1280
80
±10
0.005 0
1290
90
±10
0.005 6
1300
100
±10
0.006 1
1310
100
±10
0.006 1
1320
130
±10
0.007 8
1330
140
±10
0.008 4
1340
130
±10
0.007 7
1350
170
±10
0.010
1360
200
±10
0.012
1370
230
±10
0.013
1380
270
±20
0.016
1390
330
±20
0.019
1400
450
±20
0.026
1410
480
±20
0.027
1420
370
±20
0.021
1430
380
±20
0.021
1440
330
±20
0.018
1450
260
±20
0.014
1460
230
±20
0.013
1470
260
±20
0.014
1480
340
±20
0.018
1490
390
±30
0.021
1500
400
±30
0.021
1510
360
±30
0.019
1520
360
±30
0.019
1530
350
±30
0.018
1540
350
±30
0.018
1550
330
±30
0.017
1560
380
±30
0.019
1570
470
±30
0.024
1580
680
±40
0.034
1590
850
±40
0.043
1600
840
±40
0.042
1610
850
±40
0.042
1620
860
±40
0.042
1630
870
±40
0.042
1640
1000
±40
0.049
1650
1300
±50
0.063
1660
480
±50
0.023
1670
90
±20
0.004 3
1680
60
±20
0.002 8
1690
60
±10
0.002 8
1700
65
±10
0.003 0
1710
60
±10
0.002 8
1720
55
±10
0.002 5
1730
55
±10
0.002 5
1740
60
±10
0.002 7
1750
60
±10
0.002 7
1760
60
±10
0.002 7
1770
60
±10
0.002 7
1780
65
±10
0.002 9
1790
65
±10
0.002 9
1800
65
±10
0.002 9
1810
75
±10
0.003 3
1820
80
±10
0.003 5
1830
100
±10
0.004 3
1840
120
±10
0.005 2
1850
150
±20
0.006 5
1860
190
±20
0.008 1
1870
250
±20
0.011
1880
320
±20
0.014
1890
330
±20
0.014
1900
300
±20
0.013
1910
250
±20
0.010
1920
220
±20
0.0091
1930
180
±20
0.0074
1940
150
±20
0.0062
1950
120
±10
0.0049
1960
100
±10
0.0041
1970
95
±10
0.0038
1980
90
±10
0.0036
1990
85
±10
0.0034
2000
80
±10
0.0032
2010
75
±10
0.0030
2020
75
±10
0.0030
2030
65
±10
0.0025
2040
55
±10
0.0021
2050
45
±10
0.0017
2060
45
±10
0.0017
2070
45
±10
0.0017
2080
45
±10
0.0017
2090
45
±10
0.0017
2100
45
±10
0.0017
2110
45
±10
0.0017
2120
40
±10
0.0015
2130
40
±10
0.0015
2140
40
±10
0.0015
2150
40
±10
0.0015
2160
35
±10
0.0013
2170
35
±10
0.0013
2180
35
±10
0.0013
2190
35
±10
0.0013
2200
35
±10
0.0013
2210
35
±10
0.0013
2220
30
±20
0.0011
2230
30
±20
0.0011
2240
30
±20
0.0011
2250
30
±20
0.0011
2260
30
±20
0.0011
2270
25
±20
0.00088
2280
25
±20
0.00087
2290
25
±20
0.00087
2300
20
±20
0.00069
2350
20
±20
0.00068
2400
20
±20
0.00066,
2450
20
±20
0.00065
2500
20
±20
0.00064
2550
20
±20
0.00062
2600
20
±20
0.00061
2650
20
±20
0.00060
2700
20
±20
0.00059
2750
20
±20
0.00058
2800
20
±20
0.00057
2850
20
±20
0.00056
2900
20
±20
0.00055
2940
25
±20
0.00068
2950
25
±20
0.00067
2960
25
±20
0.00067
2970
30
±20
0.00080
2980
30
±20
0.00080
2990
35
±20
0.00093
3000
35
±20
0.00093
3010
40
±20
0.0011
3020
40
±20
0.0011
3030
45
±20
0.0012
3040
45
±20
0.0012
3050
50
±20
0.001 3
3060
60
±20
0.001 6
3070
65
±20
0.001 7
3080
70
±20
0.001 8
3090
80
±20
0.002 1
3100
90
±20
0.002 3
3110
100
±20
0.002 6
3120
110
±20
0.002 8
3130
120
±20
0.003 1
3140
130
±20
0.003 3
3150
150
±30
0.003 8
3160
170
±30
0.004 3
3170
200
±30
0.005 0
3180
230
±30
0.005 8
3190
420
±50
0.010
3200
650
±80
0.016
3210
940
±120
0.023
3220
860
±100
0.021
(3225)
800
±100
0.020
3230
850
±100
0.021
3240
960
±100
0.024
3250
1 200
±100
0.029
3260
1 500
±100
0.037
3270
2 000
±200
0.049
3280
2 300
±200
0.056
3290
2 500
±300
0.060
3300
2 400
±300
0.058
3310
2 200
±200
0.053
3320
2 100
±200
0.050
3330
2 100
±200
0.050
3340
2 200
±200
0.052
3350
2 800
±300
0.067
3360
10 000
±1000
0.24
(3367)
27 000
±3000
0.64
(3368)
22 000
±3000
0.52
3370
28 000
±3000
0.66
(3374)
45 000
±5000
1.1
3380
16 000
±2000
0.38
3390
2 000
±300
0.047
3400
410
±50
0.009 6
3410
250
±30
0.005 8
3420
200
±20
0.004 7
3430
190
±20
0.004 4
3440
300
±30
0.006 9
3450
280
±30
0.006 5
3460
260
±30
0.006 0
3470
260
±30
0.006 0
3480
250
±30
0.005 7
3490
230
±30
0.005 2
3500
200
±30
0.004 5
3510
210
±30
0.004 8
3520
220
±30
0.005 0
3530
210
±30
0.004 7
3540
240
±30
0.005 4
3550
190
±30
0.004 3
3560
90
±20
0.002 0
3570
80
±20
0.000 89
3580
70
±20
0.001 6
3590
60
±20
0.001 3
3600
50
±20
0.001 1
3620
50
±20
0.001 1
3640
50
±20
0.001 1
3660
55
±20
0.001 2
3680
60
±20
0.0013
3700
65
±20
0.001 4
3720
70
±20
0.001 5
3740
70
±20
0.001 5
3760
65
±20
0.001 4
3780
60
±20
0.001 3
3800
50
±20
0.001 0
3820
60
±15
0.001 2
3840
55
±15
0.001 1
3860
50
±15
0.001 0
3880
47
±15
0.000 96
3900
40
±15
0.000 81
3920
31
±10
0.000 63
3940
26
±10
0.000 53
3960
26
±10
0.000 52
3980
25
±10
0.000 50
4000
25
±10
0.000 50
4020
25
±10
0.000 49
4040
25
±10
0.000 49
4060
26
±10
0.000 51
4080
26
±10
0.000 51
4100
26
±10
0.000 50
4120
26
±10
0.000 50
4140
26
±10
0.000 50
4160
27
±10
0.000 52
4180
27
±10
0.000 51
4200
28
±10
0.000 53
4220
32
±10
0.000 60
4240
36
±10
0.000 68
4260
40
±10
0.000 75
4280
65
±15
0.001 2
4300
83
±15
0.001 5
4320
91
±15
0.001 7
4340
100
±20
0.001 8
4360
96
±20
0.001 8
4380
95
±20
0.001 7
4400
120
±30
0.002 2
4420
250
±50
0.004 5
4440
400
±60
0.007 2
(4450)
390
±60
0.007 0
4460
730
±100
0.013
(4470)
910
±100
0.016
4480
230
±50
0.004 1
4500
100
±30
0.001 8
4520
50
±15
0.000 88
4540
35
±15
0.000 61
4560
25
±10
0.000 44
4580
22
±10
0.000 38
4600
19
±10
0.000 33
4620
18
±10
0.000 31
4640
18
±10
0.000 31
4660
18
±10
0.000 31
4680
19
±10
0.000 32
4700
20
±10
0.000 34
4720
20
±10
0.000 34
4740
21
±10
0.000 35
4760
22
±10
0.000 37
4780
23
±10
0.000 38
4800
24
±10
0.000 40
4820
25
±10
0.000 41
4840
27
±10
0.000 44
4860
30
±10
0.000 49
4880
42
±10
0.000 68
4900
70
±20
0.001 1
4920
100
±25
0.001 6
4940
160
±30
0.002 6
4960
290
±40
0.004 7
4980
420
±40
0.006 7
(4988)
450
±40
0.007 2
5000
390
±40
0.006 2
5020
210
±30
0.003 3
5040
160
±20
0.002 5
5060
55
±15
0.000 86
5080
37
±15
0.000 58
5100
27
±10
0.000 42
5120
21
±10
0.000 33
5140
20
±10
0.000 31
5160
20
±10
0.000 31
5180
23
±10
0.000 35
5200
29
±10
0.000 44
5220
30
±10
0.000 46
5240
30
±10
0.000 46
5260
26
±10
0.000 39
5280
20
±10
0.000 30
5300
16
±10
0.000 24
5320
13
±10
0.000 19
5340
12
±10
0.000 18
5360
11
±8
0.000 16
5380
10
±7
0.000 15
5400
10
±7
0.000 15
5420
9
±5
0.000 13
5440
9
±5
0.000 13
5460
9
±5
0.000 13
5480
8
±5
0.000 12
5500
8
±5
0.000 12
5520
7
±5
0.000 10
5540
7
±5
0.000 10
5560
6
±5
0.000 09
5580
6
±5
0.000 09
5600
5
±5
0.000 07
5650
5
±5
0.000 07
5700
5
±5
0.000 07
5750
5
±5
0.000 07
5800
5
±5
0.000 07
5850
5
±5
0.000 07
5900
7
±5
0.000 09
5920
8
±5
0.000 11
5940
9
±5
0.000 12
5960
10
±6
0.000 13
5980
12
±7
0.000 16
6000
14
±7
0.000 19
6020
15
±9
0.000 20
6040
17
±10
0.000 22
6060
19
±10
0.000 25
6080
19
±10
0.000 25
6100
17
±10
0.000 22
6120
15
±9
0.000 20
6140
12
±8
0.000 16
6160
10
±7
0.000 13
6180
10
±7
0.000 13
6200
9
±6
0.000 12
6220
9
±6
0.000 12
6240
8
±5
0.000 10
6260
7
±5
0.000 09
6280
6
±5
0.000 08
6300
5
±5
0.000 06
6320
5
±5
0.000 06
6340
6
±5
0.000 08
6360
7
±5
0.000 09
6380
8
±5
0.000 10
6400
11
±7
0.000 14
6420
14
±8
0.000 17
6440
18
±8
0.000 20
6460
23
±10
0.000 28
6480
22
±10
0.000 27
6500
22
±10
0.000 27
6520
22
±10
0.000 27
6540
22
±10
0.000 27
6560
25
±10
0.000 30
6580
26
±10
0.000 31
6600
22
±9
0.000 27
6620
20
±9
0.000 24
6640
19
±9
0.000 23
6660
17
±9
0.000 20
6680
15
±8
0.000 18
6700
11
±8
0.000 13
6720
13
±8
0.000 15
6740
18
±8
0.000 21
6760
9
±7
0.000 11
6780
8
±6
0.000 09
6800
7
±5
0.000 08
6820
6
±5
0.000 07
6840
5
±5
0.000 06
TABLE IV
Absorption coefficient of metastable NH3 phase for the region around 1057 and 3374 cm−1.
ν (cm −1)
α (cm −1)
ν (cm−1)
α (cm −1)
1020
530
3280
2 700
1030
520
3290
4 500
1040
900
3300
5 400
1050
1 800
3310
5 200
1055
7 400
3320
5 100
1060
19 500
3330
4 700
1065
29 450
3340
6 000
(1067)
27 700
3350
8 700
(1068)
29 900
3360
13 500
1070
24 300
3365
13 700
1075
16 000
3370
15 500
1080
9 700
3375
30 800
1085
5 800
3380
17 700
1090
3 500
3385
6 600
1095
7 400
3390
3 600
1100
10 000
3400
1 600
1105
6 350
1110
4 850
1120
2 400
1130
1 200
TABLE V
Deviation from simple Lambert law as a function of αd for an intermediate and large absorption coefficient.
Calculated from the liquid value of Robertson and Williams15 and converted to solid using the Lorentz correction.
Calculated using the 2.08 μm value and the Kramers-Kronig dispersion relation.
TABLE III
Absorption coefficient of NH3 solid. T = 88K
α (cm −1)
Uncertainty
k
50
10
±10
0.016
60
14
±10
0.018
70
30
±15
0.034
(79)
350
±100
0.35
80
280
±100
0.28
90
10
±10
0.008 8
100
10
±10
0.008 0
110
16
±10
0.012
120
45
±20
0.030
130
120
±40
0.073
(139)
750
±100
0.43
140
690
±100
0.39
150
80
±30
0.042
160
80
±30
0.040
170
90
±30
0.042
180
190
±60
0.084
190
90
±30
0.038
200
100
±30
0.040
210
110
±30
0.042
220
120
±40
0.043
230
140
±40
0.048
240
180
±40
0.060
250
240
±50
0.76
(257)
340
±50
0.11
260
280
±50
0.086
270
170
±40
0.050
280
160
±40
0.045
290
200
±50
0.055
300
300
±50
0.080
310
450
±60
0.12
320
850
±100
0.21
330
1 700
±300
0.41
340
3 300
±400
0.77
350
7 000
±500
1.6
360
13 000
±800
2.9
(363)
14 000
±800
3.1
370
12 000
±800
2.6
380
8 600
±500
1.8
390
5 900
±400
1.2
400
4 300
±300
0.86
410
3 100
±300
0.60
420
2 300
±200
0.44
430
1 800
±200
0.33
440
1 200
±200
0.22
450
940
±150
0.17
460
770
±150
0.13
470
700
±140
0.12
480
620
±130
0.10
490
560
±130
0.091
500
520
±120
0.083
510
530
±120
0.083
520
850
±150
0.13
530
1500
±200
0.23
(532)
1600
±200
0.24
540
1300
±200
0.19
550
940
±150
0.14
560
720
±100
0.10
570
580
±100
0.081
580
500
±120
0.069
590
420
±110
0.057
600
350
±100
0.046
610
270
±80
0.035
620
200
±70
0.026
630
160
±50
0.020
640
140
±40
0.017
650
130
±40
0.016
660
130
±40
0.016
670
150
±40
0.018
680
150
±40
0.018
690
140
±40
0.016
700
130
±40
0.015
710
120
±30
0.013
720
110
±30
0.012
730
100
±30
0.011
740
80
±20
0.008 6
750
75
±20
0.008 0
760
70
±20
0.007 3
770
75
±20
0.007 8
780
90
±30
0.009 2
790
100
±30
0.010
800
110
±30
0.011
810
90
±30
0.008 8
820
85
±20
0.008 2
830
80
±20
0.007 7
840
80
±20
0.007 6
850
80
±20
0.007 5
860
75
±20
0.006 9
870
75
±20
0.006 9
880
75
±20
0.006 8
890
70
±20
0.006 3
900
70
±30
0.006 2
910
70
±30
0.006 1
920
70
±30
0.006 1
930
70
±30
0.006 0
940
75
±30
0.006 3
950
85
±30
0.007 1
960
95
±30
0.007 9
970
110
±40
0.009 0
980
140
±40
0.011
990
190
±50
0.015
1000
200
±30
0.016
1010
300
±40
0.024
1020
480
±50
0.037
1030
800
±100
0.062
1040
2 000
±300
0.15
1050
9 000
±1000
0.68
(1057)
40 000
±5000
3.0
1060
20 000
±4000
1.5
1070
10 000
±1000
0.74
1080
3 500
±500
0.26
1090
1 000
±100
0.073
(1094)
950
±100
0.069
1100
1 000
±100
0.072
1110
770
±80
0.055
1120
350
±40
0.025
1130
260
±10
0.018
1140
280
±10
0.020
1150
200
±10
0.014
1160
220
±10
0.015
1170
200
±10
0.014
1180
190
±10
0.013
1190
190
±10
0.013
1200
180
±10
0.012
1210
190
±10
0.012
1220
170
±10
0.011
1230
140
±10
0.009 1
1240
120
±10
0.007 7
1250
130
±10
0.008 3
1260
70
±10
0.004 4
1270
55
±10
0.003 4
1280
80
±10
0.005 0
1290
90
±10
0.005 6
1300
100
±10
0.006 1
1310
100
±10
0.006 1
1320
130
±10
0.007 8
1330
140
±10
0.008 4
1340
130
±10
0.007 7
1350
170
±10
0.010
1360
200
±10
0.012
1370
230
±10
0.013
1380
270
±20
0.016
1390
330
±20
0.019
1400
450
±20
0.026
1410
480
±20
0.027
1420
370
±20
0.021
1430
380
±20
0.021
1440
330
±20
0.018
1450
260
±20
0.014
1460
230
±20
0.013
1470
260
±20
0.014
1480
340
±20
0.018
1490
390
±30
0.021
1500
400
±30
0.021
1510
360
±30
0.019
1520
360
±30
0.019
1530
350
±30
0.018
1540
350
±30
0.018
1550
330
±30
0.017
1560
380
±30
0.019
1570
470
±30
0.024
1580
680
±40
0.034
1590
850
±40
0.043
1600
840
±40
0.042
1610
850
±40
0.042
1620
860
±40
0.042
1630
870
±40
0.042
1640
1000
±40
0.049
1650
1300
±50
0.063
1660
480
±50
0.023
1670
90
±20
0.004 3
1680
60
±20
0.002 8
1690
60
±10
0.002 8
1700
65
±10
0.003 0
1710
60
±10
0.002 8
1720
55
±10
0.002 5
1730
55
±10
0.002 5
1740
60
±10
0.002 7
1750
60
±10
0.002 7
1760
60
±10
0.002 7
1770
60
±10
0.002 7
1780
65
±10
0.002 9
1790
65
±10
0.002 9
1800
65
±10
0.002 9
1810
75
±10
0.003 3
1820
80
±10
0.003 5
1830
100
±10
0.004 3
1840
120
±10
0.005 2
1850
150
±20
0.006 5
1860
190
±20
0.008 1
1870
250
±20
0.011
1880
320
±20
0.014
1890
330
±20
0.014
1900
300
±20
0.013
1910
250
±20
0.010
1920
220
±20
0.0091
1930
180
±20
0.0074
1940
150
±20
0.0062
1950
120
±10
0.0049
1960
100
±10
0.0041
1970
95
±10
0.0038
1980
90
±10
0.0036
1990
85
±10
0.0034
2000
80
±10
0.0032
2010
75
±10
0.0030
2020
75
±10
0.0030
2030
65
±10
0.0025
2040
55
±10
0.0021
2050
45
±10
0.0017
2060
45
±10
0.0017
2070
45
±10
0.0017
2080
45
±10
0.0017
2090
45
±10
0.0017
2100
45
±10
0.0017
2110
45
±10
0.0017
2120
40
±10
0.0015
2130
40
±10
0.0015
2140
40
±10
0.0015
2150
40
±10
0.0015
2160
35
±10
0.0013
2170
35
±10
0.0013
2180
35
±10
0.0013
2190
35
±10
0.0013
2200
35
±10
0.0013
2210
35
±10
0.0013
2220
30
±20
0.0011
2230
30
±20
0.0011
2240
30
±20
0.0011
2250
30
±20
0.0011
2260
30
±20
0.0011
2270
25
±20
0.00088
2280
25
±20
0.00087
2290
25
±20
0.00087
2300
20
±20
0.00069
2350
20
±20
0.00068
2400
20
±20
0.00066,
2450
20
±20
0.00065
2500
20
±20
0.00064
2550
20
±20
0.00062
2600
20
±20
0.00061
2650
20
±20
0.00060
2700
20
±20
0.00059
2750
20
±20
0.00058
2800
20
±20
0.00057
2850
20
±20
0.00056
2900
20
±20
0.00055
2940
25
±20
0.00068
2950
25
±20
0.00067
2960
25
±20
0.00067
2970
30
±20
0.00080
2980
30
±20
0.00080
2990
35
±20
0.00093
3000
35
±20
0.00093
3010
40
±20
0.0011
3020
40
±20
0.0011
3030
45
±20
0.0012
3040
45
±20
0.0012
3050
50
±20
0.001 3
3060
60
±20
0.001 6
3070
65
±20
0.001 7
3080
70
±20
0.001 8
3090
80
±20
0.002 1
3100
90
±20
0.002 3
3110
100
±20
0.002 6
3120
110
±20
0.002 8
3130
120
±20
0.003 1
3140
130
±20
0.003 3
3150
150
±30
0.003 8
3160
170
±30
0.004 3
3170
200
±30
0.005 0
3180
230
±30
0.005 8
3190
420
±50
0.010
3200
650
±80
0.016
3210
940
±120
0.023
3220
860
±100
0.021
(3225)
800
±100
0.020
3230
850
±100
0.021
3240
960
±100
0.024
3250
1 200
±100
0.029
3260
1 500
±100
0.037
3270
2 000
±200
0.049
3280
2 300
±200
0.056
3290
2 500
±300
0.060
3300
2 400
±300
0.058
3310
2 200
±200
0.053
3320
2 100
±200
0.050
3330
2 100
±200
0.050
3340
2 200
±200
0.052
3350
2 800
±300
0.067
3360
10 000
±1000
0.24
(3367)
27 000
±3000
0.64
(3368)
22 000
±3000
0.52
3370
28 000
±3000
0.66
(3374)
45 000
±5000
1.1
3380
16 000
±2000
0.38
3390
2 000
±300
0.047
3400
410
±50
0.009 6
3410
250
±30
0.005 8
3420
200
±20
0.004 7
3430
190
±20
0.004 4
3440
300
±30
0.006 9
3450
280
±30
0.006 5
3460
260
±30
0.006 0
3470
260
±30
0.006 0
3480
250
±30
0.005 7
3490
230
±30
0.005 2
3500
200
±30
0.004 5
3510
210
±30
0.004 8
3520
220
±30
0.005 0
3530
210
±30
0.004 7
3540
240
±30
0.005 4
3550
190
±30
0.004 3
3560
90
±20
0.002 0
3570
80
±20
0.000 89
3580
70
±20
0.001 6
3590
60
±20
0.001 3
3600
50
±20
0.001 1
3620
50
±20
0.001 1
3640
50
±20
0.001 1
3660
55
±20
0.001 2
3680
60
±20
0.0013
3700
65
±20
0.001 4
3720
70
±20
0.001 5
3740
70
±20
0.001 5
3760
65
±20
0.001 4
3780
60
±20
0.001 3
3800
50
±20
0.001 0
3820
60
±15
0.001 2
3840
55
±15
0.001 1
3860
50
±15
0.001 0
3880
47
±15
0.000 96
3900
40
±15
0.000 81
3920
31
±10
0.000 63
3940
26
±10
0.000 53
3960
26
±10
0.000 52
3980
25
±10
0.000 50
4000
25
±10
0.000 50
4020
25
±10
0.000 49
4040
25
±10
0.000 49
4060
26
±10
0.000 51
4080
26
±10
0.000 51
4100
26
±10
0.000 50
4120
26
±10
0.000 50
4140
26
±10
0.000 50
4160
27
±10
0.000 52
4180
27
±10
0.000 51
4200
28
±10
0.000 53
4220
32
±10
0.000 60
4240
36
±10
0.000 68
4260
40
±10
0.000 75
4280
65
±15
0.001 2
4300
83
±15
0.001 5
4320
91
±15
0.001 7
4340
100
±20
0.001 8
4360
96
±20
0.001 8
4380
95
±20
0.001 7
4400
120
±30
0.002 2
4420
250
±50
0.004 5
4440
400
±60
0.007 2
(4450)
390
±60
0.007 0
4460
730
±100
0.013
(4470)
910
±100
0.016
4480
230
±50
0.004 1
4500
100
±30
0.001 8
4520
50
±15
0.000 88
4540
35
±15
0.000 61
4560
25
±10
0.000 44
4580
22
±10
0.000 38
4600
19
±10
0.000 33
4620
18
±10
0.000 31
4640
18
±10
0.000 31
4660
18
±10
0.000 31
4680
19
±10
0.000 32
4700
20
±10
0.000 34
4720
20
±10
0.000 34
4740
21
±10
0.000 35
4760
22
±10
0.000 37
4780
23
±10
0.000 38
4800
24
±10
0.000 40
4820
25
±10
0.000 41
4840
27
±10
0.000 44
4860
30
±10
0.000 49
4880
42
±10
0.000 68
4900
70
±20
0.001 1
4920
100
±25
0.001 6
4940
160
±30
0.002 6
4960
290
±40
0.004 7
4980
420
±40
0.006 7
(4988)
450
±40
0.007 2
5000
390
±40
0.006 2
5020
210
±30
0.003 3
5040
160
±20
0.002 5
5060
55
±15
0.000 86
5080
37
±15
0.000 58
5100
27
±10
0.000 42
5120
21
±10
0.000 33
5140
20
±10
0.000 31
5160
20
±10
0.000 31
5180
23
±10
0.000 35
5200
29
±10
0.000 44
5220
30
±10
0.000 46
5240
30
±10
0.000 46
5260
26
±10
0.000 39
5280
20
±10
0.000 30
5300
16
±10
0.000 24
5320
13
±10
0.000 19
5340
12
±10
0.000 18
5360
11
±8
0.000 16
5380
10
±7
0.000 15
5400
10
±7
0.000 15
5420
9
±5
0.000 13
5440
9
±5
0.000 13
5460
9
±5
0.000 13
5480
8
±5
0.000 12
5500
8
±5
0.000 12
5520
7
±5
0.000 10
5540
7
±5
0.000 10
5560
6
±5
0.000 09
5580
6
±5
0.000 09
5600
5
±5
0.000 07
5650
5
±5
0.000 07
5700
5
±5
0.000 07
5750
5
±5
0.000 07
5800
5
±5
0.000 07
5850
5
±5
0.000 07
5900
7
±5
0.000 09
5920
8
±5
0.000 11
5940
9
±5
0.000 12
5960
10
±6
0.000 13
5980
12
±7
0.000 16
6000
14
±7
0.000 19
6020
15
±9
0.000 20
6040
17
±10
0.000 22
6060
19
±10
0.000 25
6080
19
±10
0.000 25
6100
17
±10
0.000 22
6120
15
±9
0.000 20
6140
12
±8
0.000 16
6160
10
±7
0.000 13
6180
10
±7
0.000 13
6200
9
±6
0.000 12
6220
9
±6
0.000 12
6240
8
±5
0.000 10
6260
7
±5
0.000 09
6280
6
±5
0.000 08
6300
5
±5
0.000 06
6320
5
±5
0.000 06
6340
6
±5
0.000 08
6360
7
±5
0.000 09
6380
8
±5
0.000 10
6400
11
±7
0.000 14
6420
14
±8
0.000 17
6440
18
±8
0.000 20
6460
23
±10
0.000 28
6480
22
±10
0.000 27
6500
22
±10
0.000 27
6520
22
±10
0.000 27
6540
22
±10
0.000 27
6560
25
±10
0.000 30
6580
26
±10
0.000 31
6600
22
±9
0.000 27
6620
20
±9
0.000 24
6640
19
±9
0.000 23
6660
17
±9
0.000 20
6680
15
±8
0.000 18
6700
11
±8
0.000 13
6720
13
±8
0.000 15
6740
18
±8
0.000 21
6760
9
±7
0.000 11
6780
8
±6
0.000 09
6800
7
±5
0.000 08
6820
6
±5
0.000 07
6840
5
±5
0.000 06
TABLE IV
Absorption coefficient of metastable NH3 phase for the region around 1057 and 3374 cm−1.
ν (cm −1)
α (cm −1)
ν (cm−1)
α (cm −1)
1020
530
3280
2 700
1030
520
3290
4 500
1040
900
3300
5 400
1050
1 800
3310
5 200
1055
7 400
3320
5 100
1060
19 500
3330
4 700
1065
29 450
3340
6 000
(1067)
27 700
3350
8 700
(1068)
29 900
3360
13 500
1070
24 300
3365
13 700
1075
16 000
3370
15 500
1080
9 700
3375
30 800
1085
5 800
3380
17 700
1090
3 500
3385
6 600
1095
7 400
3390
3 600
1100
10 000
3400
1 600
1105
6 350
1110
4 850
1120
2 400
1130
1 200
TABLE V
Deviation from simple Lambert law as a function of αd for an intermediate and large absorption coefficient.