| Literature DB >> 6683015 |
Abstract
A closed form solution of the equation describing the spectrum of a Gaussian pulse propagating in a medium with nonlinear frequency dependence of attenuation is presented. This solution suggests that in general the spectrum remains Gaussian, subject only to center frequency downshift and bandwidth reduction. The possibility of experimentally determining the two nonlinear material parameters from the measurement of the center frequency downshift and the reduced bandwidth is proposed.Mesh：
Year: 1983 PMID： 6683015 DOI： 10.1177/016173468300500102
Source DB: PubMed Journal: Ultrason Imaging ISSN： 0161-7346 Impact factor: 1.578