Specular reflection contributions to dynamic radiation forces on highly reflecting spheres (L)

Specular reflection contributions to dynamic radiation forces were recently mentioned for highly reflecting spheres to facilitate comparison with forces on cylinders [Marston, Daniel, Fortuner, Kirsteins, and Abawi, J. Acoust. Soc. Am. 149, 3042-3051 (2021)]. Both shapes of reflectors were taken to be illuminated by short-wavelength plane wave double-sideband suppressed-carrier ultrasound. Here, the geometric method of evaluating dynamic forces on spheres is illustrated along with an analysis of the phase of the modulated radiation force. Comparison with partial wave series solutions supports the relevance of the specular reflection analysis for insight into forces on highly reflecting objects in water.