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Fragmentation pattern coefficient table

Fragmentation pattern coefficient table

This  table below shows the low molecular pattern coefficient often observed in thermal desorption experiments.
The pattern coefficient may slightly differ between indivisual devices. 
Please note that all values shown here are average values at the ionization voltage of 70eV.


Mass number H2 He CH4 NH3 H2O HF C2H2 CO N2 C2H4 C2H6 NO CH3OH O2 HCl Ar CO2 C3H8 N2O C2H5OH
1 3.0                                      
2 100.0                                      
4   100.0                                    
12     2.4       2.5 4.5   2.1             6.0      
13     7.7       5.6     3.5                    
14     15.6 2.2         7.2 6.3 3.4 7.5           25.0 12.9  
15     85.8 7.5             4.6 2.4           39.0    
16     100.0 80.0 1.1             1.5   11.4     8.5   5.0  
17     1.2 100.0 23.0                              
18         100.0               1.9             5.5
19           5.0                           2.3
20           100.0                   20.0        
21                                        
22                                 1.2      
23                                        
24             5.6     3.7                    
25             20.1     11.7 4.2                  
26             100.0     62.3 23.0             76.0   8.3
27             2.8     64.8 33.3             37.9   23.9
Mass number H2 He CH4 NH3 H2O HF C2H2 CO N2 C2H4 C2H6 NO CH3OH O2 HCl Ar CO2 C3H8 N2O C2H5OH
28               100.0 100.0 100.0 100.0   6.4       11.4 59.1 10.8 6.9
29               1.1     21.7   64.7         100.0   23.4
30                     26.2 100.0           2.1   6.0
31                         100.0             100.0
32                         66.7 100.0           1.4
33                         1.0              
35                             17.0          
36                             100.0          
37                             5.4     3.1    
38                             32.4     4.9    
39                                   16.2    
40                               100.0   2.8    
41                                   12.4    
42                                   5.1    
43                                   22.3    
44                                 100.0 26.2 100.0  
45                                 1.3     34.4
46                                       16.5
Mass number H2 He CH4 NH3 H2O HF C2H2 CO N2 C2H4 C2H6 NO CH3OH O2 HCl Ar CO2 C3H8 N2O C2H5OH
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