Extended Data Fig. 2: Exemplary kinetic profile of the reaction of pyridine+ with acetylene in a continuous high-pressure regime at 150 K. | Nature Astronomy

Extended Data Fig. 2: Exemplary kinetic profile of the reaction of pyridine+ with acetylene in a continuous high-pressure regime at 150 K.

From: Low-temperature nitrogen-bearing polycyclic aromatic hydrocarbon formation routes validated by infrared spectroscopy

Extended Data Fig. 2

An ion pulse length of 5 ms and acetylene number densities of 1.8 x 109 to 3.1 x 109 have been used. Measurements are shown as points with 1σ error bars from multiple iterations on each datapoint. The solid lines display the results of the fitted reaction equation model. The grey area is not included in the fit, as the ions are still being thermalized after entering the trap. The value for k2 that describes the bimolecular reaction to m/z 104 is fixed to 4.9 x 10−10 cm3 molecule−1 s−1 as determined from low pressure regime scans.

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