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Table 2

Fragmentation patterns of CO and 13CH3OH upon 70 eV electron impact ionisation.

Mass CO 13CH3OH CH4
(amu)
12 0.04268 0.01686
13 0.00081 0.0474
14 0.00245 0.09062
15 0.00690 0.39404
16 0.01580 0.05059 0.44375
28 0.92936
29 0.01115 0.01874
30 0.18205
31 0.02650
32 0.40824
33 0.30372

Notes. Fragmentation pattern and intensities based on NIST data. The most commonly used channels are highlighted in red.

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