The observation of fluorescence from excited states of NF2 and NF following the photodissociation of NF3 in the 11-30 eV range

A study of the vacuum-ultraviolet (VUV) fluorescence spectroscopy of NF3 in the 11-30 eV range is presented. Synchrotron radiation (SR) from BESSY1, B erlin provides the VUV excitation source. Emission due to NF b(1)Sigma (+) - X (3)Sigma (-) at 528.8 nm is observed between 11.5 and 21.0 eV. Other em issions, which are believed to be due to transitions between highly excited states of NF2, are observed at higher energies, 14.8-24.5 eV. Lifetimes as sociated with two of these bands at 325 and 410 nm are determined to be 12. 9 and 13.0 ns, respectively. The similarity of the measured values implies that the two transitions originate from a common upper state. (C) 2001 Publ ished by Elsevier Science B.V.