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, Position initiale des fils, (b) Transition des fils vers un état de plasma WDM au passage du courant, (c) Compression du plasma au point de croisement des fils, qui conduit à l'émission d'une impulsion X "thermique" intense, (d) Séparation du plasma par le pincement magnétique, et formation d'un gap qui conduit à l'émission de rayonnement X "suprathermique

, En revanche il avait été moins systématiquement étudié, c'est pourquoi une première expérience visait à caractériser la source X en termes de taille, de transmission à travers des épaisseurs de matériaux choisis (Ta, Cu, Al), et de durée d'émission X. dispersion linéique (ou LSF pour Line Spread Function), obtenue par dérivation des profils du signal enregistré. Le détecteur est un écran radio-luminescent à mémoire. La transmission à travers des échelons d'épaisseurs calibrées est mesurée en utilisant les mêmes détecteurs, et présente plus d'intérêt pour l'application visée

. Durant-cette-expérience-;-le-x-pinch-:-cu, A. Mo, W. Au, and ). , Nous avons identifié la charge en or comme étant la plus prometteuse pour notre application : c'est à la fois celle pour laquelle nous avons mesuré la taille de source la plus petite (0.65 ± 0.05 mm), et qui présente une bonne capacité à différencier les épaisseurs des échelons testés. De plus son numéro atomique est élevé, ce qui assure une émission intense. Cette charge émet des rayons X sur une gamme spectrale étendue, nous avons effectué des essais avec différentes charges (i.e. nature et diamètre des fils constituant

. Ainsi,

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