Study of expansion of solid helium-4 into vacuum [Elektronische Ressource] / von Manuel Käsz

M?rzStudyManofinExpansionysikofetheSoliMdIdsteinHelium-4rankfurtinolfgangtonivVrankfurtacuumvDissertationK?szzurf?rErlangungrankfurtdesMain,Doktorgrades(DF1)derGoNaturwissensc-Uhaftenersit?tvForgelegtambaineimonFuelacaushInstitutbKernphereicFhFPhamysikimder2006JohannWter:vDr.omter:FusacD?rnerhBenedekbolfereicGutachDr.PhGutacysikDr.dederrWJohannA?mW1.olfganghGoProf.ethe-UnivReinhardersit?t2.alshDissertationProf.angenommen.GiorgioDekDatuman:Disputation:Prof.μd0Dv−5 210 τ ≈rφ ≈f=resultexpre-injectionerimeninjectiontalvmethonon-equilibriumddtoyin-secvofestigateestheoquansometumdical.crystalaccessbdetailedehavviorabofpsolidtheHephenomenonlsolidium-4.theItyhascollapsebandeendepfoundtempthattempainfascinatingacanciesneworkeectofodelccursancyinimpthetumexpansionofofbsolidstate,Helium-4delinacanciestopatovgeneratedacuumterface.throughtheypinholeorice,oricesWithwiththediametersbbyeteamwaeenand1sucanddep5ecienwductionm.binationItaisacancyobservresultsedconrmsthatmothenebconceneamtheuxbinThere-tensitvygeneratingshovwsthead-likpHerioK.dicforbecauseehakineticvionorexcessfortosourceprcon-AditionsicorrespmoondingacanciestoatheliquidsolidorcedphaseandofulateHelium-4.fromThetoptheeriosubsequendvisrepinouttheprangereproofthesecondstupintodemonstratedminrangeutes.andItesshovwsasaandstrongofdepdiusionendencetoonrangetempinertheaoftuinregivandthesourceationpres-erimensure.yTheal.