Effect of the repulsion between twin granular impactors on crater's aspect ratio: preliminary findings

TL;DR

This study investigates how repulsive interactions between twin impactors affect the shape of craters in granular beds, highlighting the importance of preparation protocols in experimental outcomes.

Contribution

It provides experimental evidence that repulsive granular interactions influence crater aspect ratio and emphasizes the significance of bed preparation procedures.

Findings

Repulsion affects crater aspect ratio

Preparation protocol influences experimental results

Granular interactions are measurable in impact cratering

Abstract

We study the role of repulsive granular interactions between identical intruders as they impact a granular bed. We demonstrate experimentally that repulsion does have a measurable effect in the aspect ratio of binary craters. Furthermore, we show that the protocol followed for the preparation of the granular bed plays a crucial role in the output of table-top experiments on doublet craters.