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Fig. 5

image

Top panel: TPD traces of CH3NCH (m/z 43 – solid red curve) and cracking pattern m/z 42 (CH3NCH+ – dashed red curve) desorb around 90–115 K; remaining CH3NC+ (m/z 41) (solid blue curve) and cracking pattern m/z 39 and 40 (dash blue curves) desorb around 110–125 K; finally, dimethylamine (CH3NHCH) (m/z 45 – solid green curve) and cracking patterns m/z 44 (dash green curve), m/z 43 (solid red curve), and m/z 42 (dash red curve) desorb around 120–145 K. Bottom panel: TPD traces of CH (red curve) and HCN+ (or HNC+) (blue curve) are formed from other chemical pathways between CH3NC and H atoms.

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