Abstract
The near-infrared emission spectrum of N2 diluted in rare-gas matrices exhibits a variety of new emission lines featuring different linewidths and decay times. One vibrational v″ progression of lines characterized by widths of 25 cm−1 and by decay times of 70 μs in Ar and of 60 μs in Kr is assigned to the forbidden electronic transition W 3Δu (v′)–A 3∑+u (v″=0–4). Selectively unrelaxed initial states v′=4 in 14N2 and v′=3 in 15N2 are observed, and the resistance of these particular levels against radiationless relaxation is attributed to bottlenecks in the cascade of internal conversion processes among the vibrational levels of the A, B, B′, and W electronic states. The assignments are based on isotope shift measurements and on quantitative estimates of allowed and induced vibrational and electronic radiative transition probabilities. The relative efficiency of multiphonon relaxation in different rare-gas matrices is discussed in the light of these and of other comparable measurements.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
