title: A numerical study of the effect of drive level on the intensity loss from an ultrasonic beam.
abstract: Knowledge of the spatial distribution of intensity loss from an ultrasonic beam is vital to bioeffect predictions such as heating and streaming. A method for calculating the distribution of intensity loss over a finite-amplitude ultrasonic beam is described. The technique demonstrates that the location of peak intensity loss varies considerably with drive level for a plane circular source, as does the overall distribution of intensity loss across the beam. The effects are shown to be less pronounced but still significant for a focused source.
authors.affiliation: School of Physics, University of Bath, UK.
authors.forename: A C
authors.initials: AC
authors.lastname: Baker
mesh_terms: D000162:Acoustics; D055592:Biophysical Phenomena; D001703:Biophysics; D008433:Mathematics; D008954:Models, Biological; D008962:Models, Theoretical; D014463:Ultrasonography / Q000379:methods*; D014867:Water
chemical_list: D014867:Water