Active Nitrogen by A. Nelson Wright

By A. Nelson Wright

Actual Chemistry, a chain of Monographs: energetic Nitrogen provides the tools wherein energetic nitrogen should be produced. This ebook consists of 5 chapters that assessment the strength content material, molecular spectrum, and the emission of lively nitrogen. a few of the issues coated within the e-book are the precis of light-emitting platforms of lively nitrogen; research of Long-Lived Lewis-Rayleigh Afterglow concept and Ionic concept of Mitra; reactions via caused gentle emission; and features of homogeneous recombination. different chapters care for the research of metastable molecule theories and the mechanisms for reactions of energetic nitrogen related to direct N(4S) assault. The dialogue then shifts to the speed constants for reactions precipitated via direct N(4S) assault. The overview of the Short-Lived vigorous Afterglow thought is gifted. the ultimate bankruptcy is dedicated to the exam of emission from molecular species with digital power degrees less than 9.76 eV. The booklet grants worthwhile info to physicists, scholars, and researchers.

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Similar techniques for measurement of rotational and vibrational temperatures have been employed by Marrone (444) and by Schmeltekopf et al. (131). Bombardment of nitrogen or air at pressures in the neighborhood of a few hundred torr, with 50 keV electrons, has also been reported to produce intense first negative emission (366, 366a, 445). Similar emission has been observed from electron-irradiated (N 2 + 0 2 ) mixtures in the pressure range 1-10 torr for N 2 concentrations in excess of 66% (446).

5 keV the dominant feature is charge exchange (450). It has been calculated that, with protons of 5-130 keV energy, about 15% of the N2+ molecules are formed in the excited B 2Ση+ state (451). Absolute cross sections for the production of first negative emission have been measured as a function of the energy of the incident H+, D+, He+, Ne+, and H2+ {368a, 369, 451-453).

Schultz has derived a value of 4 x lO -16 cm2 for the excitation of second positive bands from metastable Ar* species formed during α-particle irradiation of (Ar + N2) mixtures (371). Argon or neon species, excited with soft X-rays, also appear to be capable of inducing second positive emission from trace amounts of nitrogen (87a). Finally, the thermal excitation of the C 3i7w state, corresponding to excitation by molecular collisions, has been achieved in a shock wave through nitrogenargon mixtures (375) or through air (100).

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