DETERMINATION OF THE B-1-PI-CHI-1-SIGMA AND C-1-SIGMA-CHI-1-SIGMA ELECTRONIC-TRANSITIONS STRENGTHS OF CAOстатья
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Аннотация:The strengths Se of the B1Π-X1∑ and C1∑-X1∑ electronic transitions of the CaO molecule have been determined by absorption measurements in a shock tube. Powdered calcium oxide and a gaseous mixture of oxygen and argon in the ratio of 1:5 or 1:9 were introduced into the shock channel. The CaO gas-phase concentration was determined by using the equilibrium constant for CaO⇄Ca+O; atomic oxygen concentration was calculated and that of calcium was measured spectroscopically. The values of Se (in atomic units) are for B1Π-X1∑, 2.32±0.49; for C1∑-X1∑, 2.88±0.67.