简介：Oneofthemostfascinatingignitionschemesfortheinertialfusionenergythatmightbefeasibleisfastignition.Itstargetsareignitedontheoutsidesurfacesothereisnoneedtolowdensityandhightemperaturecenterisrequiredbycentralhotspotignition.Fastignitionconceptisnoteworthyforasimplebutfundamentalreason:Inprincipleitrequireslesstotalenergyinputtoachieveignition.Inthispaper,fuelenergyandfuelenergygainofnearlypuredeuteriumcapsulearecalculated.Thiscapsuleisignitedbyadeuterium-tritiumseed,whichwouldreducethetritiuminventorytoafewpercentages.Thevariationsoffuelenergygainversusfueldensityhavebeenstudiedandsubmitted.Onthebasisofdifferentphysicalparametersthefollowingresultsoftheinvestigationarepresentedanddiscussed.Theenergygaincurvesfordifferenttritiumconcentrationsarefoundandlimitinggaincurvesarederived.Finally,tritium-poorfastignitoriscomparedtoequimolardeuterium-tritiumfastignitor.

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