• Rotational analysis ofA1Π-X1Σ+ bands of As14N and As15N: perturbation studies in theA1Π state

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    • Keywords

       

      Perturbations; configuration; molecular constants; rotational analysis; vibrational assignments

    • Abstract

       

      The ultraviolet bands ofA1Π-X1Σ+ system of As14N and its isotopic species As15N were excited in a quartz tube containing specpure nitrogen and traces of AsCl3 vapour, using a microwave discharge (2450 MHz). Bands of As15N were obtained using15N2 enriched to 95.5%. Rotational structure of several bands of As14N and As15N photographed under high dispersion (0.14 Å/mm) was reanalysed. Detailed studies of the observed perturbations in the levels ofν′ = 0 to 4 led to the identification of two3Σ and aC1Σ states. Molecular parametersTe, ωe, ωexe, Beandαewere determined for all the electronic states studied. Vibrational assignments of the perturbing levels were made using the isotope shift studies.

    • Author Affiliations

       

      P Saraswathy1 G Krishnamurty1

      1. Spectroscopy Division, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085, India
    • Dates

       
  • Pramana – Journal of Physics | News

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