颗粒靶体撞击溅射行为研究进展

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中图分类号：0389 国标学科代码：13035 文献标志码：A

Abstract：Impact ejecting isa critical partof theimpact processand plays apivotal role inengineering applications and scientific analyses in dep space exploration. Its importance extends to space misions such as asteroid surface anchoring for misiontabilityimpactsmpingforsientificanalysisofextraterestrialmaterials，ieticimpactdefletionforplaetay defensestrategies，ndthedetailedanalysisofejecta depositionpatternsonplanetarysurfacestouderstandsurfaceevolution andregolith dynamics. Withsmallasteroids whose surfaces are commonlycovered withregolith，granular targets are employed in laboratorysettings to simulate the impact ejecting proces.This paper presents a reviewof theresearch progressconcerming thebehaviorofimpact ejectingongranular argets.Theformationprocessof impact ejectingand methods fordescribing ejecta curtains areevaluated.An analysis of the dimensional similaritylaws govemning impact ejecta，along withtheirapplicability and limitations，isconducted.Aditionally，theinfluenceoffactors，suchas targetmaterial parameters，impactconditions， targetsurface morphology，and impactorshapeandstructure，onimpact ejectingbehavior issummarized.Finalyexisting researchchallengesareobjectivelyidentified，and potential directionsforfurtherscientificresearchaboutthebehaviorof impact ejecta on granular targets are proposed.

Keywords：impact-induced ejecta; ejectacurtain; scalinglaw;asteroid sampling

自1609年伽利略首次通过望远镜观测到月球表面的撞击坑以来，对天体撞击过程的研究便逐渐深人。（剩余49167字）