Abstract
The excitation of ground-state nitrogen atoms by metastable argon atoms has been studied by vacuum ultraviolet spectroscopy in a discharge-flow reactor. Rate constants for excitation of the 2s22p2 3s2P, 2s22p2 3s4P and 2s 2p44P states were determined to be (9.0 ± 2.7) × 10−11, (1.6 ± 0.7) × 10−11 and (6.8 ± 2.9) × 10−11 cm3 molecule−1 s−1, respectively. These energy-transfer reactions involve energy defects of 0.6–1.2 eV. The results are discussed in terms of several types of curve crossings.
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