English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recent observations of asteroidal surfaces indicate the presence of materialsthat do not match the bulk lithology of the body. A possible explanation forthe presence of these exogenous materials is that they are products ofinter-asteroid impacts in the Main Belt, and thus interest has increased inunderstanding the fate of the projectile during hypervelocity impacts. In orderto gain insight into the fate of impactor we have carried out a laboratoryprogramme, covering the velocity range of 0.38 - 3.50 km/s, devoted tomeasuring the survivability, fragmentation and final state of the impactor.Forsterite olivine and synthetic basalt projectiles were fired onto lowporosity (<10%) pure water-ice targets using the University of Kent's Light GasGun (LGG). We developed a novel method to identify impactor fragments whichwere found in ejecta and implanted into the target. We applied astronomicalphotometry techniques, using the SOURCE EXTRACTOR software, to automaticallymeasure the dimensions of thousands of fragments. This procedure enabled us toestimate the implanted mass on the target body, which was found to be a fewpercent of the initial mass of the impactor. We calculated an order ofmagnitude difference in the energy density of catastrophic disruption, Q*,between peridot and basalt projectiles. However, we found very similarbehaviour of the size frequency distributions for the hypervelocity shots (>1km/s). After each shot, we examined the largest peridot fragments with Ramanspectroscopy and no melt or alteration in the final state of the projectile wasobserved.

Survival of the impactor during hypervelocity collisions I: An analogue for low porosity targets