|
E. N. Moskvitina, Yu. Ya. Kuzyakov
Investigation of the absorption electronic spectrum of the
monobromide hafnium molecule in the region 550–800 nm
Abstract
The
absorption electronic spectra of HfBr in the region550–800 nm have been
obtained and investigated using the intracavity laser method. Molecules of HfBr have
been created in plasma formed by a pulse electric discharge in vapors of a mixture
of hafnium tetra bromide with nitrogen and hydrogen or ammonium. The discharge
tube with the mixture was placed in the cavity of a dye laser. The registration
of spectra has been performed by means of the diffraction spectrograph
(resolution power 240000). Twenty new bands contained partly resolved
rotational structure were found in the HfBr spectrum as a result of the high sensitivity of the
intracavity method. Bands in the spectrum of HfBr were assigned to 2Δ 3/2–X 2Δ 3/2 transition by analogy with the spectrum of HfCl. Analysis of these bands were
performed and the molecular constants unknown before were determined.
Key words: HfBr, intercavity laser
spectroscopy, vibration analysis, molecular constants.
Copyright (C) Chemistry Dept., Moscow State University, 2002
|
|
