INTERPRETATION OF THE COMPENSATION EFFECT AS A CONSEQUENCE OF VIBRATIONAL ENERGY TRANSFER IN HOMOGENEOUS AND ISOTROPIC HEAT FIELD
Pages 101-104
Nicolina Pop, Gabriela Vlase, T.Vlase, N. Doca
Abstract
By kinetics of decomposition of solids in both isothermal and non-isothermal conditions, the compensation effect (CE) is rather a rule. The topic of this work is to suggest an activation mechanism who lead to dependences similar with CE. Considering an activation process due to a vibrational energy transfer from an homogeneous and isotropic field of thermic oscillators to the solid state oscillator, the thermodynamic functions are in the relationship dH= T·dS. This is in fact equivalent with one of the mathematical expression of CE. Taking into account the definitions of H and S by means of the partition function, the isokinetic temperature is assimilated with the characteristic temperature T= ћ ω/kB. An important consequence, a correlation between the isokinetic temperature and the spectroscopic wave number of the activated bond, is illustrated by a number of decomposition reactions under non-isothermal conditions