Anomalous behavior of cavitation bubbles observed in pulsed laser ablation of Ni in liquid CO2 near the critical point

Shohei Himeno, Toru Kato, Keiichiro Urabe, Sven Stauss, Satoshi Kato, Hitoshi Muneoka, Motoyoshi Baba, Tohru Suemoto, Kazuo Terashima

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Pulsed laser ablation of Ni targets in liquid CO2 near the critical point (C.P.) (P crit= 7.38 MPa, Tcrit (=304.1 K) was performed and the time evolution of the plasma and the ensuing cavitation bubble analyzed by shadowgraph imaging. Formation of double-layered anomalous cavitation bubbles was observed inside the liquid phase close to the C.P. The size and propagation speed of the cavitation bubbles were measured and it was found that in the experimental range investigated (P = 7.20-7.40 MPa, T =301-303 K), the size of the cavitation bubble increased by a factor of up to three for increasing pressure and temperature, whereas the propagation speed decreased.

Original languageEnglish
Article number6855369
Pages (from-to)2630-2631
Number of pages2
JournalIEEE Transactions on Plasma Science
Volume42
Issue number10
DOIs
Publication statusPublished - 2014 Oct 1
Externally publishedYes

Keywords

  • Cavitation bubble
  • critical point
  • laser ablation.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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