Negative Pressures and Spallation in Water Drops Subjected to Nanosecond Shock Waves.

TitleNegative Pressures and Spallation in Water Drops Subjected to Nanosecond Shock Waves.
Publication TypeJournal Article
Year of Publication2016
AuthorsStan, CA, Willmott, PR, Stone, HA, Koglin, JE, Liang, M, Aquila, AL, Robinson, JS, Gumerlock, KL, Blaj, G, Sierra, RG, Boutet, S, Guillet, SAH, Curtis, RH, Vetter, SL, Loos, H, Turner, JL, Decker, F-J
JournalJ Phys Chem Lett
Volume7
Issue11
Pagination2055-62
Date Published2016 Jun 02
ISSN1948-7185
Abstract

Most experimental studies of cavitation in liquid water at negative pressures reported cavitation at tensions significantly smaller than those expected for homogeneous nucleation, suggesting that achievable tensions are limited by heterogeneous cavitation. We generated tension pulses with nanosecond rise times in water by reflecting cylindrical shock waves, produced by X-ray laser pulses, at the internal surface of drops of water. Depending on the X-ray pulse energy, a range of cavitation phenomena occurred, including the rupture and detachment, or spallation, of thin liquid layers at the surface of the drop. When spallation occurred, we evaluated that negative pressures below -100 MPa were reached in the drops. We model the negative pressures from shock reflection experiments using a nucleation-and-growth model that explains how rapid decompression could outrun heterogeneous cavitation in water, and enable the study of stretched water close to homogeneous cavitation pressures.

DOI10.1021/acs.jpclett.6b00687
Alternate JournalJ Phys Chem Lett
PubMed ID27182751