title: Direct observation and theoretical study of cavitation bubbles in liquid mercury.
abstract: The direct observation of cavitation bubbles emerging in liquid mercury under the action of mechanical impacts and theoretical investigations on the experimental results have been made. Through a glass wall, the image of cavitation bubbles appearing near or in contact with the wall was captured by high-speed cameras. Discrepancies found between the bubbles' growth rates determined experimentally and given by a single-bubble theory have been discussed using a theoretical model of Rayleigh-Plesset type that takes into account bubble-bubble and bubble-wall interactions. A theoretical equation for the asymptotic growth rate in a multibubble case has been given and time dependence of the growth rate under a constant negative pressure has been clarified.
authors.affiliation: Center for Computational Science and E-systems, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan. ida.masato@jaea.go.jp
authors.forename: Masato
authors.initials: M
authors.lastname: Ida
authors.forename: Takashi
authors.initials: T
authors.lastname: Naoe
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Futakawa