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The infrared (IR) and ultraviolet (UV) absorption spectra of pure solid N2 and CH4 diluted in solid N2 (1/100) irradiated with energetic electrons at 10K were obtained. The IR absorption measurements of the electron-bombarded pure N2 solid reveal the formation of N3 and N3 + , which was confirmed by the observed electronic transitions A²Σu + ←X ² ⨅g of N3 and A 3⨅u ←X 3Σg - of N3 + . In the case of N2 ice containing a small proportion of CH4, we have identified the products of irradiated CH4/N2 ice, including N3, CnN (n = 1-3), CN2, (CN)2, CH3N, HCN2, HC2N, C(NH)2, HNC, HCN, CH3, C2H, C2H2, CN-, NH3 + , and HC3N+ . UV absorption measurement of the ice sample was carried out and the possible carriers associated with the observed absorption bands were assigned and discussed. [ABSTRACT FROM AUTHOR]

Chemical reactions of C2H4 dispersed in solid nitrogen at 10 K that occur upon irradiation with Lyα light at a wavelength of 121.6 nm and 500 eV electrons were investigated by measuring the infrared absorption spectra. Photolysis of the matrix samples with 121.6 nm light yielded products, including C2H2, CN, and isomers of C2N2, as well as a pair of HCN and HNC. In contrast, electron bombardment of similar matrix samples mainly resulted in the generation of N3, C2H2, C2H3, C3H2, and C3N−. Mechanisms of the reactions that occur during the photolysis and electron-radiation of the matrix samples are discussed. The results of the study provide insights into the formation of HNC and HCN, as well as nitriles, in N2-rich ice samples containing a small proportion of C2H4. [ABSTRACT FROM AUTHOR]