简介:RadioactiveIonBeamLineinLanzhou¥ZhanWenlong;GuoZhongyan;LiuGuanhua;YinQuanmin;ZhouJianqunandWangYifangAsanewfrontierinnu...
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简介:Recentresearchactivitiesrelevanttohighenergydensityphysics(HEDP)drivenbytheheavyionbeamattheInstituteofModernPhysics,ChineseAcademyofSciencesarepresented.RadiographyofstaticobjectswiththefastextractedhighenergycarbonionbeamfromtheCoolingStorageRingisdiscussed.Investigationofthelowenergyheavyionbeamandplasmainteractionisreported.WithHEDPresearchasoneofthemaingoals,theprojectHIAF(HighIntensityheavy-ionAcceleratorFacility),proposedbytheInstituteofModernPhysicsasthe12thfive-year-planofChina,isintroduced.
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简介:RIBLL(RadioactiveIonBeamLineinLanzhou)isanimportantpartofHIRFL(HeavyIonResearchFacilityinLanzhou).RIBLLpowersupplysystemwasfoundedin1996,Seven“hard”switchingpowersupplieswereemployed.Theywereallhalf-bridgeconverters.Fig.1isthemaincircuitoftheconverter.Andtable1showstheoutputparameters.
简介:DetailedexaminationofhistoricaldataofearthquakesandfieldinvestigationsofloesslandslidecausedbytheearthquakeandtracingofactivefaultsinLanzhouareaindicatethattheYijitanputown,oneofsixtownsofJinchengcity,wasdevastatedbythe1125Lanzhouearthquake.ThecitlyisnowlocatedintheVinylonFactorysouthofHekou(RiverMouth)intheXigudistictofLanzhoucity.WedelerminedthatthesixoldtownsmentionedinhistoricalrecordslieinanareastretchingfromthesouthofXigudistricttoHekouinLanzhou.Thisisconsistentwiththedistibutionofloesslandslidescausedbytheearthquake,theextensionofHoloceneactivefaults,andthedistributionoftracesoftheseismicrupturezone.Acomprehensiveanalysisshowsthattheseismogenicstructureforthe1125LanzhouM7.0earthquakeshouldbetheXianshuigoufaultsegmentatthewesternterminationofthenorth-borderactivefaultzoneoftheMaxianshanMountainswhicharelocatedinsouthofLanzhoucitywiththedistanceofonly4km.
简介:Adetailedinvestigationpermittedustoobtainquantitativedataconcerningfinegeometricstructuresof4faultsoftheactiveMaxianshan-Xinglongshanfaultsystemandthelatestmovementalongthem.OfthemthenorthernMaxianshanborderfaultisalarge-scale,stronglyactiveHolocenereversesinistralstrike-slipfault,theother3faults,thesouthernMaxianshanborderfaultandthesouthernXinglongshanborderandthenorthernXinglongshanborderfaultsaretheaccompanyingactivelate-Pleistocenethrustfaults,whichareincorporatedintothemainstrike-slipfault,thenorthernMaxianshanborderfaultatdepth.Itisthemostimportantearthquake-controllingfaultintheLanzhouarea,thefaultinfluencesandconstrainstheseismicactivityinthearea.
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