Bubble proliferation in the cavitation field of a shock wave lithotripter

Yuri A. Pishchalnikov, James C. Williams, James A. McAteer

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Lithotripter shock waves (SWs) generated in non-degassed water at 0.5 and 2 Hz pulse repetition frequency (PRF) were characterized using a fiber-optic hydrophone. High-speed imaging captured the inertial growth-collapse-rebound cycle of cavitation bubbles, and continuous recording with a 60 fps camcorder was used to track bubble proliferation over successive SWs. Microbubbles that seeded the generation of bubble clouds formed by the breakup of cavitation jets and by bubble collapse following rebound. Microbubbles that persisted long enough served as cavitation nuclei for subsequent SWs, as such bubble clouds were enhanced at fast PRF. Visual tracking suggests that bubble clouds can originate from single bubbles.

Original languageEnglish (US)
Pages (from-to)EL87-EL93
JournalJournal of the Acoustical Society of America
Volume130
Issue number2
DOIs
StatePublished - Aug 1 2011

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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