In a beam-beam scattering experAnent the excitation fUnctions of the reactions of alkallne earth metals with some polyatoAnc halldes (M+RX- MX+R) have been studied with Laser Induced Fluorescence (LIF) teclmique. At the variation range of the collision energies, the excitation functions can be taken asaR(ET) De In(1 + QMAX/ET)"where ET and QMAX are the coilision energy and the reaction exoergic energy, respectively,and n is a parameter which is correlative to the Illnner of the active vibrational modes in radical R during the reaction processes. Tab1e 2 gives the paramters of the excitation fUllctions for these reactions.
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