Fig. 2
Infrared spectra of pure acetonitrile 15N ice (A) and difference spectrum between pure ethylamine 15N and ethylamine 15N after 240 min of VUV irradiation at 20 K (B). Spectra (C) and (D) are identical to (A) and (B) with the isotopomer 14N. All spectra were recorded at 20 K.
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