Study on the storage, processing and preparation of lunar samples returned by the Chang?E-5mission

The Chang'E-5 missionrealized China's first automatic lunar surfacesamplingreturn.The GroundResearchandApplicationSystemis responsiblefor storing,preparing,and processingthe returnedlunar samples.The constructedLunar SampleLaboratoryhas storage,processing,and preparationfunctionsfor the originallunar samplesand is capableof long-termsamplestorageand processingin an environmentof high-puritynitrogenon Earth. The Chang'E-5missionreturnedtwo types of samples:scoopedand drilledsamples.This study developeddetailedstorage,preparation,andprocessingprotocolsfor different types of samples.Three workingstages will be carriedout after the sampleis returnedto the Lunar SampleLaboratory, includingsampleprocessing,storage,and preparation.The detailedprocedureinvolvesunsealingthe sealedpackagingdevice,separatingthe scoopedand drilledsamples,storingthe drilledand scoopedsamples,and preparingthe samples.The primarysealed containersfor scoopedand drilledsampleswere successfullyextractedvia a designedunsealingprocess.Samplesfor permanentstorage,backupstorage,engineeringdisplay, andscientificresearchwere obtainedusing the divisionmethodfor scoopedand drilledsamples.The samplesare stored indifferent equipmentsat differentlocationsaccordingto the designedstoragemethodin this study. Scientificsamplesandsome displaysampleswere polishedinto sectionsaccordingto the designedpreparationmethodto ensurethat the basicsampleinformationcan be obtainedwithoutdestroyingthe originalcharacteristicsof the samples.The preparedsampleswill be used to analyzetheir physicaland chemicalpropertiesand describetheir basic characteristics,which can provideimportantinformationand technical support for subsequent scientific research

Automated summary

The Chang'E-5 mission achieved China's first automatic lunar surface sampling return. The Ground Research and Application System is responsible for storing, preparing, and processing the returned lunar samples. The Lunar Sample Laboratory has storage, processing, and preparation functions for the original lunar samples, allowing long-term storage and processing in a high-purity nitrogen environment on Earth. The mission returned scooped and drilled samples, and this study developed detailed protocols for their storage, preparation, and processing. After being returned to the Lunar Sample Laboratory, the samples undergo three stages of processing, storage, and preparation. The prepared samples will be used to analyze their physical and chemical properties and describe their basic characteristics, providing important information and technical support for subsequent scientific research.