Abstract
A microwave-afterglow/mass-spectrometer apparatus which employs microwave heating of the electrons is used to determine the recombination coefficients, and , of mass-identified ions with electrons as a function of electron temperature. From electron-density decay data taken under good "ion-tracking" conditions it is found that varies as over the range [starting from a value (1.95 ± 0.2) × /sec at K] and then varies as between 1200 and 5000°K. In the nitrogen studies the "ion tracking" of the electron decay is less perfect, but remains the principal afterglow ion and is found to vary as over the entire range , starting from a value () × /sec at K. These results are compared with other laboratory determinations, results of theoretical calculations, and values inferred from analyses of ionospheric measurements.
- Received 27 January 1969
DOI:https://doi.org/10.1103/PhysRev.181.264
©1969 American Physical Society