Abstract
The mechanism of thermal electron attachment in O 2N 2 mixtures including air has been investigated using a microwave cavity technique combined with X-ray pulse radiolysis. From the experimental results it has been shown that the simple Bloch—Bradbury mechanism breaks down and the mechanism must include overall four-body electron attachment processes. At 290 K the three-body electron attachment rate constants are (2.4 ± 0.1) × 10 −30 cm 6/s and (8.5 ± 0.3) × 10 −32 cm 6/s for O 2 and N 2 as third bodies, respectively, and the four-body attachment rate constant for O 2 as a fourth body is (1.0 ± 0.5) × 10 −49 cm 9/s.
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