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Abstract: We manufactured pulsed illuminators emitting in the far infrared for thePlanck-HFI bolometric instrument ground calibrations. Specific measurementshave been conducted on these light sources, based on Carbon fibers, tounderstand and predict their properties. We present a modelisation of thetemperature dependence of the thermal conductivity and the calorificcapacitance of the fibers. A comparison between simulations and bolometer datais given, that shows the coherence of our model. Their small time constants,their stability and their emission spectrum pointing in the submm range makethese illuminators a very usefull tool for calibrating FIR instruments.



Autor: S. Henrot-Versille, R. Cizeron, F. Couchot

Fuente: https://arxiv.org/







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