EPR Spectrum of Solid Nitrogen Afterglow at 4.2°K

Abstract

Because the Rayleigh afterglow induced in nitrogen is of undoubted importance to physics, chemistry, and astrophysics, as well as in studies of the earth's atmosphere, it seemed of primary interest to determine whether thermally condensed activated nitrogen would yield an electron paramagnetic resonance (EPR) spectrum. We have recently observed intense EPR spectra in the afterglow solidified at 4.2°K, and they plainly indicate the presence of atomic nitrogen.

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