Results 41 to 50 of about 17,020 (222)

An investigation of shear thickening fluids using ejecta analysis techniques

, 2016
In the present study, ejecta dynamics techniques are used to investigate the ballistic response of shear thickening particle suspensions as a means of assessing the particle hardness and the role of interparticle friction during penetration.
Hogan, James D., Petel, Oren E.
core   +1 more source

A Microkrystite from the Australasian Tektite/Microtektite Strewn Field

Meteoritics &Planetary Science, EarlyView.
Abstract Microkrystites are glassy impact spherules. They contain primary crystallites carrying information on the physical and chemical conditions prevailing during vaporization, melting, and ejection in large impact cratering events. We report on the geochemistry and mineralogy down to nanometer scale of the first microkrystite (ODP1144A,14) from the
Matteo Del Rio, Luigi Folco, Matteo Masotta, Ana Černok, Enrico Mugnaioli   +4 more
wiley   +1 more source

Pre-encounter Predictions of DART Impact Ejecta Behavior and Observability [PDF]

, 2022
We overview various efforts within the DART Investigation Team's Ejecta Working Group to predict the characteristics, quantity, dynamical behavior, and observability of DART impact ejecta.
Fahnestock, Eugene, G, Dotto, Elisabetta, Tancredi, Gonzalo, Abell, Paul A., Li, Jian Yang, Ferrari, Fabio, Kramer, Emily, Soldini, Stefania, Ivanovski, Stavro, Kolokolova, Ludmilla, Raducan, Sabina D, Cheng, Andrew F, Schwartz, Stephen R, Fahnestock, Eugene G., Fahnestock, Eugene G, Bagatin, Adriano Campo, Michel, Patrick, Raducan, Sabina D., Schwartz, Stephen R., Chesley, Steven, Cheng, Andy F., Tancredi Machado, Gonzalo José, Abell, Paul, A, Raducan, Sabina, D, Abell, Paul A, Li, Jian-Yang, Cheng, Andrew, F, Abell, Paul, Zhang, Yun, Bagatin, Adriano, Campo, IVANOVSKI, Stavro Lambrov, Rossi, Alessandro, Cheng, Andrew F., Jian-Yang Li, Campo Bagatin, Adriano, Schwartz, Stephen, R, Yun Zhang   +36 more
core   +2 more sources

High-energy X-ray radiography investigation on the ejecta physics of laser shock-loaded tin

AIP Advances, 2019
This study is devoted to the high-energy X-ray radiography investigation on the ejecta physics of laser shock-loaded tin. The ejecta were generated via laser shock loaded tin under sequential shock-breakout pressures by high-power nanosecond lasers.
Weihua He, Tao Xi, Min Shui, Minghai Yu, Yongqiang Zhao, Yuchi Wu, Yuqiu Gu, Genbai Chu, Jianting Xin   +8 more
doaj   +1 more source

Modelling the composition of a young star cluster ejecta [PDF]

, 2012
We have computed with a fine time grid the evolution of the elemental abundances of He, C, N and O ejected by young (t < 20 Myr) and massive (M = 10⁶Mꙩ) coeval stellar cluster with a Salpeter initial mass function (IMF) over a wide range of initial ...
ROBERTO GIOVANNI TERLEVICH AFONSO
core  

Disentangling Impact Ejecta Dynamics Using Micro–X‐Ray Fluorescence (μ‐XRF): A Case Study From the Terrestrial Cretaceous‐Paleogene (K‐Pg) Boundary

Geochemistry, Geophysics, Geosystems
This study presents a non‐destructive geochemical and petrographic workflow to generate high‐resolution chemostratigraphic records across key stratigraphic intervals, exemplified by a terrestrial Cretaceous‐Paleogene (K‐Pg) boundary sequence preserved at
Pim Kaskes, Roald Tagle, Mariia Rey, Steven Goderis, Sophie Decrée, Jan Smit, Philippe Claeys   +6 more
doaj   +1 more source

Ground‐Based Validation of Hera's Spacecraft Monitoring Camera

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract Hera is an ESA contribution to the international planetary defense effort. It is a deep‐space mission to the binary asteroid system Didymos and Dimorphos, designed to investigate the effects of NASA's Double Asteroid Redirection Test (DART), demonstrate autonomous navigation, and support close‐proximity investigation by two CubeSats.
D. T. Lakey, A. Schiavo, C. Guerbuez
wiley   +1 more source

ALMA Observations of the DART Impact: Characterizing the Ejecta at Submillimeter Wavelengths

The Planetary Science Journal, 2023
We report observations of the Didymos–Dimorphos binary asteroid system using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Atacama Compact Array (ACA) in support of the Double Asteroid Redirection Test mission.
Nathan X. Roth, Stefanie N. Milam, Anthony J. Remijan, Martin A. Cordiner, Michael W. Busch, Cristina A. Thomas, Andrew S. Rivkin, Arielle Moullet, Ted L. Roush, Mark A. Siebert, Jian-Yang Li, Eugene G. Fahnestock, Josep M. Trigo-Rodríguez, Cyrielle Opitom, Masatoshi Hirabayashi   +14 more
doaj   +1 more source

Meter‐Scale Roughness of the Lunar Surface

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Small‐scale surface roughness is a key indicator of local geological processes, yet it has not previously been mapped globally on the Moon. We present global meter‐scale surface roughness maps generated from the Lunar Orbiter Laser Altimeter pulses, which record information about surface undulations within the instrument's ∼5 m individual ...
Hephzibah Christopher, Indujaa Ganesh
wiley   +1 more source

Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement

Rare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan, Xuedao Shu, Hu Zong, Su Zhao, Khamis Essa, Di Tie, Changyong Chen   +6 more
wiley   +1 more source