Rasagar/Library/PackageCache/com.unity.render-pipelines.high-definition/Documentation~/snippets/shader-properties/emission-inputs/use-emission-intensity.md

Use Emission Intensity Indicates whether to use a separate low dynamic range (LDR) color and intensity value to set the final emission color. If you enable this property, Emissive Color becomes LDR and Emission Intensity appears and sets the intensity of emission. If you disable this property, Emissive Color becomes high dynamic range (HDR) and you set the intensity of the emission inside the Emissive Color HDR color picker.