1. CH3Br; old data
agust,www,...ch3br/PPT aak.ppt
agust,heima,...CH3Br/CH3Br19500_19690vhwak.pxp

2. Br+ Mw
19500
hn(Laser)
19550

3. Br +

4. Br + Mw
19648
hv(Laser)
19670

5. Br +

6. Br + Mw
19670
hv(Laser)
19690

7. Br +

8. Br+ signal is observed at 19519.92 cm-1 (hn(Laser)) =>
Br I   253 Levels Found
Data on Lande factors and level compositions are not available for this ion
 Configuration 
 Term 
 J 
 Level   (cm-1) 
4s24p5 
 2P° 
 3/2 
  0      
 1/2 
  3 685.24   
4s24p4(3P2)5s 
 4P 
 5/2 
  63 436.45   
  64 907.19   
4s24p4(3P1)5s 
  66 883.87   
 2P 
  67 183.58   
4s24p4(3P0)5s 
  68 970.21   
4s24p4(3P2)5p 
 4P° 
  74 672.32   
  75 009.13   
  75 814.00   
 4D° 
 7/2 
  75 521.50   
  75 697.05   
  76 743.08   
4s24p4(1D)5s 
 2D 
  75 890.33   
  75 908.53   
4s24p4(3P1)5p 
 2S° 
  78 076.00   
 2D° 
  78 511.60   
  78 676.65   
Br+ signal is observed at
cm-1 (hn(Laser))
=>
cm-1 = 2hn
4s24p5(2Po) ->-> 4s24p4(3P1)5p(2So)
J´´ = 3/2 ->-> J´ = 1/2
i.e.
Dl=0 (p ->->p)
DL = -1; DS =0, DJ = -1

9. Br + signal is observed at 19670 cm-1 (hn(Laser) =>
 Configuration 
 Term 
 J 
 Level   (cm-1) 
4s24p5 
 2P° 
 3/2 
  0      
 1/2 
  3 685.24   
4s24p4(3P2)5s 
 4P 
 5/2 
  63 436.45   
  64 907.19   
4s24p4(3P1)5s 
  66 883.87   
 2P 
  67 183.58   
4s24p4(3P0)5s 
  68 970.21   
4s24p4(3P2)5p 
 4P° 
  74 672.32   
  75 009.13   
  75 814.00   
 4D° 
 7/2 
  75 521.50   
  75 697.05   
  76 743.08   
4s24p4(1D)5s 
 2D 
  75 890.33   
  75 908.53   
4s24p4(3P1)5p 
 2S° 
  78 076.00   
 2D° 
  78 511.60   
  78 676.65   
Br + signal is observed at
19670 cm-1 (hn(Laser)
=>
78680 cm-1 = 2hn
4s24p5(2Po) ->-> 4s24p4(3P1)5p(2Do)
J´´ = 3/2 ->-> J´= 3/2
i.e.
Dl = 0 (p ->->p)
DL = +1; DS = 0, DJ = 0

10. x103 cm-1 CH3 + Br+ + e- 120137.8 120 102663.8 100 CH3 + Br*(2S1/2) 80o
CH3 + Br*(2S1/2) 80
CH3Br*
78076
Abs. due to transition
to the repulsive state 60
39038 40 o
CH3 + Br (2P3/2)
78076/2 = 20
CH3Br