1. CH3Br,
(2+n)REMPI spectra assignments for region – cm-1
agust, heima,...Sept09/CH3Br-Overall km ak.pxp
agust,www,...Sept09/PPT ak.ppt

2. Causley and Russel,
JCP, 62(3), p:848, (1975):
See next slide

3. Causley and Russel,
JCP, 62(3), p:848, (1975):
cm-1

4. 67273
66502
66020
68661 nm
agust, heima,...Sept09/CH3Br-Overall km ak.pxp

5. nm

7. [3/2]5p;0, ni <-<- Ground state; i = 3,2,1 – transitions,
Causley & Russel / cm-1
Ours / cm-1
Ours-Causley´s / cm-1
transition
Vibr. Wave-
numbers [3/2]5p;0
numbers ground state
66004
66020 16
Y(origin)
66482
66502 20
Y + n3´
n3´= 482
n3´´= 611
67246
67273 27
Y + n2´
n2´= 1253
n2´´= 1306
68846
31.6
Y + n1´
n1´=
n1´´= 2935
68659
68661 2
Y’ (origin)
i.e. The bands 66502,67273 and cm-1 are
[3/2]5p;0, ni <-<- Ground state; i = 3,2,1 – transitions,
i.e. Correspond to transition to vibrationally excited states

8. 1/2 :
3/2 :
(1,0,0,...)
68661
(0,0,0,...)
(1/2)5p;0
67273
(0,1,0,...)
CH3Br*
66502
(0,0,1,...)
66020
(0,0,0,...)
(3/2)5p;0 Y´
(v1´,v2´,v3´,...) Y
(v1´´,v2´´,v3´´,...)=
(0,0,0,...)
CH3Br

9. Prediktions for Y´+ ni´; i = 1,2,3 spectra:
Causley & Russel / cm-1
Ours / cm-1
Ours-Causley´s / cm-1
transition
Vibr. Wave-
numbers [3/2]5p;0
numbers [1/2]5p;0
66004
66020 16
Y(origin)
66482
66502 20
Y + n3´
n3´= 482
Y’ + n3´´= 69143
67246
67273 27
Y + n2´
n2´= 1253
Y’ + n2´´= 69914
68846
31.6
Y + n1´
n1´=
Y’ + n1´´=
68659
68661 2
Y’ (origin)