Ultraviolet part of transient absorption spectrum induced in liquid ammonia by nanosecond pulse radiolysis

The absorption spectra induced in neat liquid ammonia and ammoniacal solution of N2O by nanosecond pulse radiolysis have been measured for wavelength range 250 to 325 nm. The results indicate that the absorption spectrum induced in liquid ammonia is a composite of absorption spectra of e/sub am/- and NH2. The absorptions due to e/sub am/- decrease with decreasing wavelength, and are attributed to the tail of the absorption spectrum (maximum absorption in near infrared) of e/sub am/-. The absorption spectrum for NH2 has a shoulder at approximately 255 nm. In liquid ammonia at 230C, the extinction coefficient for NH2 at 250 nm is 1.1 x 103 M-1 cm-1