TY - JOUR
T1 - Geometrical description of impact cratering under microgravity conditions
AU - Villalobos, Cristian
AU - Housset, Mauricio
AU - Varas, Germán
N1 - Funding Information:
The authors thanks Menka Stojanova for the initial help with the image detection program. We also thank Val?rie Vidal and Nicol?s Mujica for discussion and a proofreading of the article. G.Varas acknowledge financial support from PUCV DI Regular Project No. 039.438/2017.
Funding Information:
The authors thanks Menka Stojanova for the initial help with the image detection program. We also thank Valérie Vidal and Nicolás Mujica for discussion and a proofreading of the article. G.Varas acknowledge financial support from PUCV DI Regular Project No. 039.438/2017.
Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2022/5
Y1 - 2022/5
N2 - Abstract: Crater formation has been widely studied through different strategies. One of them simplifies the problem to the impact of a spherical projectile on a granular layer. Due to technical limitations, experimental studies have focused independently on either the corolla formation or the deformation inside the granular bed. Hence, so far, it has not been possible to link these two processes. Here, we present an original experiment that allows us to simultaneously observe the granular dynamics above and below the granular layer in microgravity conditions. The crater morphology is studied considering the dependency on the impact energy, grain size, and shape of the projectile. The results show that this type of experimental configuration makes it possible to quantify the effects of projectile geometry in the crater cavity, something that cannot be captured in traditional tridimensional (3D) deep layer experiments or without the help of advanced imaging techniques such as high-speed X-ray radiography. Finally, this setup opens a new way to study the possible effects of collisions between micrometer-sized dust grains under microgravity conditions, a fundamental process in the early formation of planets in protoplanetary disks. Graphic abstract: [Figure not available: see fulltext.]
AB - Abstract: Crater formation has been widely studied through different strategies. One of them simplifies the problem to the impact of a spherical projectile on a granular layer. Due to technical limitations, experimental studies have focused independently on either the corolla formation or the deformation inside the granular bed. Hence, so far, it has not been possible to link these two processes. Here, we present an original experiment that allows us to simultaneously observe the granular dynamics above and below the granular layer in microgravity conditions. The crater morphology is studied considering the dependency on the impact energy, grain size, and shape of the projectile. The results show that this type of experimental configuration makes it possible to quantify the effects of projectile geometry in the crater cavity, something that cannot be captured in traditional tridimensional (3D) deep layer experiments or without the help of advanced imaging techniques such as high-speed X-ray radiography. Finally, this setup opens a new way to study the possible effects of collisions between micrometer-sized dust grains under microgravity conditions, a fundamental process in the early formation of planets in protoplanetary disks. Graphic abstract: [Figure not available: see fulltext.]
KW - Crater formation
KW - Free-fall
KW - Impacts
KW - Microgravity
UR - http://www.scopus.com/inward/record.url?scp=85128721361&partnerID=8YFLogxK
U2 - 10.1007/s10035-022-01221-x
DO - 10.1007/s10035-022-01221-x
M3 - Article
AN - SCOPUS:85128721361
VL - 24
JO - Granular Matter
JF - Granular Matter
SN - 1434-5021
IS - 2
M1 - 64
ER -