, Volume 13, Issue 2, pp 149–157 | Cite as

TheB 2Σ-X 2Σ system of the CaF molecule

  • Ram Samujh Ram
  • S B Rai
  • K N Upadhya


The spectrum of theB 2Σ-X 2Σ system of the CaF molecule has been photographed in the second order of a 10.6 m concave grating spectrograph with 0.33 Å/mm dispersion. The rotational structure of the (0, 0) and (1, 0) bands has been analysed and the precise molecular constants have been obtained. Using the constants so determined the band origins of a large number of bands with 0 <v′,v″ < 10 have been calculated and used to obtain the accurate vibrational constants forB andX states and these are presented.


Concave grating spectrograph molecular constants vibrational constants spin splitting microwave optical double resonance 


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  1. Barrow R F and Beale J R 1967Proc. Phys. Soc. (London)91 483CrossRefGoogle Scholar
  2. Barrow R F, Bastin M W and Longborough B 1967Proc. Phys. Soc. (London)92 518CrossRefGoogle Scholar
  3. Datta S 1921Proc. R. Soc. (London)A99 436CrossRefADSGoogle Scholar
  4. Fabry Ch 1905Astrophys. J. 21 356CrossRefADSGoogle Scholar
  5. Field R W, Harris D O and Tanaka T 1975J. Mol. Spectrosc. 57 107CrossRefADSGoogle Scholar
  6. Hulthen E 1928Z. Phys. 50 319CrossRefADSGoogle Scholar
  7. Harvey A 1931Proc. R. Soc. (London) A133 336CrossRefADSGoogle Scholar
  8. Herzberg G 1950Spectra and structure of diatomic molecules (New York: D Van Nostrand)Google Scholar
  9. Johnson R C 1929Proc. R. Soc. (London) A22 161CrossRefADSGoogle Scholar
  10. Mohanty B S and Upadhya K N 1967Indian J. Pure Appl. Phys. 5 523Google Scholar
  11. Movikov M M and Gurvich E V 1967Opt. Spectrosc. 22 395ADSGoogle Scholar
  12. Nanda D P and Mohanty B S 1970Curr. Sci. 39 300Google Scholar
  13. Nakagawa J, Domaille P J, Steimle T C and Harris D O 1978J. Mol. Spectrosc. 70 374CrossRefADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 1979

Authors and Affiliations

  • Ram Samujh Ram
    • 1
  • S B Rai
    • 1
  • K N Upadhya
    • 1
  1. 1.Laser and Spectroscopy Laboratory, Department of PhysicsBanaras Hindu UniversityVaranasi

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