2003-(II)-Ultrasonic techniques - The Resonator
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Critical systems and total attenuation spectrum:
In the case of critical liquid systems, the ultrasonic spectra get an additional contribution, resulting from the critical fluctuations. This critical attenuation term has been treated within the framework of the Bhattacharjee-Ferrell theory. Assuming additivity of the critical contributions and the other ones, the total ultrasonic absorption spectrum, can be written as:
However, because of its essential role in these investigations, the first contribution of the eqaution will be treated separately in the Project (2003-(III)-Critical Contribution, Dynamic Scaling and Crossover Theory ).