https://doi.org/10.1051/epjap/2017160407
Regular Article
Frequency changes of electromagnetic waves in simple polar-molecule reactions
1
College of Communication, Chengdu Technological University, 611730 Chengdu, P.R. China
2
College of Electronics and Information Engineering, Sichuan University, 610065 Chengdu, P.R. China
a e-mail: kmhuang@scu.edu.cn
Received:
30
October
2016
Revised:
18
January
2017
Accepted:
20
January
2017
Published online: 3 March 2017
Characteristics of electromagnetic wave (EMW) propagation in microwave-assisted chemical reactions are critical to solve the problems of inhomogeneous heating and thermal runaway. By transforming the propagation equation of EMWs in simple polar-molecule reactions, the dispersive and time-varying characteristics of simple polar-molecule reactions are unfolded. Subsequently, we simulate the propagation of EMWs in simple polar-molecule reactions to disclose the effects of component concentration variation on frequency changes. Frequency changes can be neglected during the process of component concentration variation on the condition that the time scale of the variation is much greater than the wave period. If the time scale of the variation is comparable with or smaller than the wave period, frequency broadening or shift can be observed. Frequency changes are used to discuss the relationship between the time domain and frequency domain representation of the polarization in the reactions.
© EDP Sciences, 2017
