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The time-dependent behavior of the intensity of the 10 830 {} line emitted from a pulsed helium afterglow at 3 Torr has been investigated with an improved spectrometric system of sufficient sensitivity-bandwidth ratio to resolve the behavior of this line over a 50-msec time interval. A high degree of correlation was observed between the 10 830 {} line intensity and the 4650 {} molecular-band intensity for afterglow times in excess of 2 msec. A recombination of the He₂⁺ ion leading to dissociation and having a rate coefficient of 2 ×{} 10^-11{cm}³$ / sec at ${10}¹²$ electrons/${cm}³$ is consistent with data.
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Collins et al. (1969) studied this question.
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