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Anharmonicity; molecular orbital; isotopic shift; multiplicity; internuclear distance; vibrational frequency

Emission spectrum of DyO molecule has been photographed under high resolution in the wavelength region 5000 to 6300 A. The observed bands have been arranged into three different band systems. The rotational structure in the (0, 0) band of system I is partially resolved and analysed. Isotopic shifts have been calculated for various isotopic molecules and compared with observations. Electronic states involved in the transitions have been discussed.

B R Yadav¹ S B Rai¹ D K Rai¹

1. Department of Physics, Banaras Hindu University, Varanasi - 221 005, India

Published

May 1980

Manuscript received

3 December 1979

Manuscript revised

12 March 1980