简介：AnX-rayradiationsourcewithapproximatelyconstantradiationtemperatureisrealizedbyirradiatinggoldenhohlraumwithashapedlaserpulse.Asimpletheoreticalmodelbasedonpowerbalanceisusedtodesigntheshapeofthedrivelaserpulse.ExperimentsarecarriedoutontheShenguangIIIprototypelaserfacility,andtheexperimentalresultsarepresentedforradiationsourceswiththeflat-toplastingabout2.5nsattwodiferentpeaktemperaturesofabout150eVand170eV,respectively,includingthetimehistoriesofthetemperatures,theshapesofthedrivelaserpulsesandthetimeintegratedradiationspectra.Thevalidityofthemodelandpossibleimprovementsarediscussed.
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