The emission spectrum of bismuth bromide (BiBr)—“A” system

  • S. Sankaranarayanan
  • M. M. Patel
  • P. S. Narayanan


The emission spectrum of bismuth monobromide has been investigated and a vibrational analysis of the A→X system has been made. About 286 bands were recorded in the region λλ 4595–6063 and the isotope effect due to Br79 and Br81 was observed in about 87 bands. A value of 2·74 ev. for the dissociation energy of the excited state has been obtained and arguments have been given to show that the dissociation products in the excited state are Bi(4S3/2) and Br(2P3/2) and that those of the ground state are most probably Bi (4S3/2) and Br (2P1/2) atoms.


Dissociation Energy Isotope Effect Discharge Tube Band System Dissociation Limit 
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Copyright information

© Indian Academy of Sciences 1962

Authors and Affiliations

  • S. Sankaranarayanan
    • 1
  • M. M. Patel
    • 1
  • P. S. Narayanan
    • 1
  1. 1.From the Department of PhysicsIndian Institute of ScienceBangalore-12

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