EPR Spectrum of Solid Nitrogen Afterglow at 4.2°K

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