{"id":6439,"date":"2026-06-05T00:39:14","date_gmt":"2026-06-04T22:39:14","guid":{"rendered":"https:\/\/www.swissrocketman.fr\/Wordpress\/?p=6439"},"modified":"2026-06-17T18:03:40","modified_gmt":"2026-06-17T16:03:40","slug":"laser-co2-tea-1-gw-prei-onization-par-rayons-x-1982","status":"publish","type":"post","link":"https:\/\/www.swissrocketman.fr\/Wordpress\/laser-co2-tea-1-gw-prei-onization-par-rayons-x-1982\/","title":{"rendered":"Laser CO2 TEA 1 GW pr\u00e9-ionization par rayons X 1982"},"content":{"rendered":"

Ce laser je l’ai construit dans le cadre d’un projet interne pour l’Institut Battelle.<\/span><\/span><\/h2>\n

La particularit\u00e9 de ce laser est qu’il est capable de sortir 100 J en 100ns soit 1 GW de puissance cr\u00eate.
\nL’alimentation est compos\u00e9 d’un ancien g\u00e9n\u00e9rateur de rayon X (120kV 200mA) qui charge un g\u00e9n\u00e9rateur de Marx de 2 \u00e9tages compos\u00e9s de condensateurs non inductifs Maxwell.
\nUne partie de l’\u00e9nergie se d\u00e9charge sur des pins en tungst\u00e8ne sous 200kV produisant des rayons X mous servant \u00e0 pr\u00e9ioniz\u00e9 le m\u00e9lange gazeux He\/N2\/CO2<\/h4>\n<\/div><\/section><\/div>\n
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Les \u00e9lectrodes de pr\u00e9-ionisation sont compos\u00e9es de 4 tubes capillaires de quartz soud\u00e9es cote \u00e0 cote par paires, \u00e0 l’int\u00e9rieur se trouve un fil de cuivre reli\u00e9 \u00e0 la masse et \u00e0 l’ext\u00e9rieur des tubes sont coll\u00e9s 34 pines en tungst\u00e8ne avec un espacement de 3mm. Durant la d\u00e9charge d’un condensateurs charg\u00e9 \u00e0 50kV il se produit des arcs au total 68 qui produisent des photons de 200 eV d’\u00e9nergie (rayon X mous) qui vont irradi\u00e9 les 1600 cm3\u00a0 et qui vont ionis\u00e9s le m\u00e9lange gazeux avec 2.10<\/span><\/span>14<\/span><\/span>\u00a0<\/span>ions\/cm . Les \u00e9lectrodes de d\u00e9charges principales ont un profil de BRUCE et sont en aluminium massif de 500mm x 150mm x 25mm.<\/span><\/span><\/span><\/h4>\n<\/div><\/section><\/p><\/div>\n
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Pupitre de commande du transformateur haute tension\u00a0 100 kV\u00a0 0.2 A\u00a0 pour la charge du g\u00e9n\u00e9rateur de Marx de 2 \u00e9tages. Une fois les capacit\u00e9s MAXWELL\u00a0 100kV\u00a0 0.66 uF charg\u00e9 ceux ci sont mises en s\u00e9rie de mani\u00e8re \u00e0 avoir une diff\u00e9rence de potentiel de 200 kV pour excit\u00e9 le m\u00e9lange\u00a0 He\/N2\/CO2. Pour obtenir une d\u00e9charge homog\u00e8ne on r\u00e9alise quelques dizaines de nanoseconde avant un pr\u00e9ionization XUV<\/h5>\n<\/div><\/section><\/p><\/div>\n
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