CH3Br, 7.-9.08.09
2D & 1D REMPI spectra for“66037 system” / [3/2]5p;0 system
agust,www...ch3br/PPT-070809aka.pptagust,heima,...CH3Br/CH3Br65960_66120-070809vhwak.pxp
-14
-12
-10
-8
-6
-4
-2
0x1
03
30025020015010050 pnt
H+
C+
CH381Br+
CH379Br+
81Br+
79Br+
CH3+
CH2+
CH+
Wave656 vs pnt
322
320
318
316
314
312
310
308
66.0866.0666.0466.0266.0065.98x103
2hv
pnt
CH381Br+
CH379Br +
2D REMPI spectra:
1200
1000
800
600
400
200
0
-200
66.0866.0666.0466.0266.0065.9865.96x103
CH381Br+
CH379Br +
2hv
1D REMPI spectra:
200
100
0
-100
-200
66.0866.0666.0466.0266.0065.9865.96x103
81Br+
79Br +
300
298
296
294
292
290
288
30025020015010050
81Br+
79Br +
2hv
pnt
1200
1000
800
600
400
200
0
-200
66.0866.0666.0466.0266.0065.9865.96x103
81Br+
CH381Br+
2hv
1500
1000
500
0
-500
66.0866.0666.0466.0266.0065.9865.96x103
81Br+ x 4
CH381Br+
2hv
No significant difference in 1D REMPI spectra for the two isotopomers (for 79Br and 81Br)
No significant difference in 1D REMPI spectra structures for 81Br+ and CH381Br+
spectra
08.08.09:
150
145
140
135
130
66.0866.0666.0466.0266.0065.98x103
CH3+
CH2+
CH+
C+
pnt
2hv
15
10
5
0
x103
66.0866.0666.0466.0266.0065.9865.96x103
CH3+
pnt=141
CH2+
pnt=137
CH+
C+
800
600
400
200
0
66.0866.0666.0466.0266.0065.9865.96x103
CH+ pnt=133
C+ pnt=128
CH3+, CH2
+, CH+ and C+ ion spectra all show Rydberg spectra structure
09.08.09:
56
55
54
53
52
66.0866.0666.0466.0266.0065.98x103
H+
pnt
2hv
300
250
200
150
100
50
0
66.0866.0666.0466.0266.0065.9865.96x103
H+
pnt = 54
2hv
even H+ ion REMPI spectra show Rydberg spectra structure
ERGO:1D REMPI spectra of all ions (H+, C+, CH+, CH2
+ , CH3+ , 79Br+ , 81Br+ , CH3
79Br+ , CH381Br+ )
look the same, i.e ca. bell shaped, such as:
1200
1000
800
600
400
200
0
66.0866.0666.0466.0266.0065.9865.96x103
CH381Br+
2hv
-800
-600
-400
-200
0
x103
30025020015010050
1D REMPI for integrating points 123 – 189:
ions Mw Pnt:H+ 1 54
C+ 12 128.3
CH+ 13 132.8
CH2+ 14 137
CH3+ 15 141
79Br+ 79 29281Br+ 81 295.2
CH379Br+ 94 311.8
CH381Br+ 96 315
300
250
200
150
100
8642
Coefficient values ± one standard deviation a = 25.243 ± 1.13 b = 29.773 ± 0.168
Pnt = 29.773 sqrt(Mw) + 25.243
pnt
Sqrt(Mw)
250
200
150
100
8642
Coefficient values ± one standard deviation a = 24.04 ± 0.135 b = 30.144 ± 0.0243
Pnt = 30.144 sqrt(Mw) + 24.04Mw = ((pnt-24.04)/30.144)**2
-800
-600
-400
-200
0x1
03
100806040200
Mw/ amu
Wave1301 vs Mwb
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