Hot vibrating gases under the electron spotlight

Scientists have studied the vibration of four gases using electron microscopy and spectroscopy. Combined with simulations, they measured the increased vibration at 1,000°C compared with room temperature. O2 and CH4 showed significant excitation, although the vibration of hot O2 was overestimated by the simulations. N2 and CO showed no increase in vibration, because of rigid bonds. The method can be used to design efficient gaseous reactions.

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