Millimetric granular craters from pulsed laser ablation

J. O. Marston, F. Pacheco-Vázquez

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

This Rapid Communication reports on an experimental study of granular craters formed by a mechanism, namely, optical energy, via a pulsed laser focused onto the surface of a granular bed. This represents an insight into granular cratering for two reasons; first, there is no physical contact between the initiation mechanism and the granular media (as typical for impact or explosion craters). Second, the resulting craters are millimetric in scale, which facilitates a test of energy scalings down to a previously unobserved lengthscale. Indeed, we observe a range of energy scalings conforming to Dc∼Eβ with β≈0.31-0.43 depending on the characteristics of the granular media.

Original languageEnglish
Article number030901
JournalPhysical Review E
Volume99
Issue number3
DOIs
StatePublished - Mar 22 2019

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