Abstract
A number of bands of MgO have been observed in the region 2500-2800 AA in emission from a d.c. arc between magnesium electrodes in an atmosphere of oxygen at low pressure. A detailed fine structure analysis of one of the bands at 37683.5 cm-1 (band origin) shows that the band arises due to an electronic transition from a new excited state designated as E 1 Sigma to the well known state X 1 Sigma of MgO. The band is very likely the 0-0 band. The rotational constants of the new state E1 Sigma are B0=0.5249 cm-1 D0=1.14*10-6 cm-1. A number of perturbations have been observed in the rotational structure of the band.

This publication has 7 references indexed in Scilit: