Gas cell adapted for carbon dioxide

Details Gas cell adapted for carbon dioxide Gas cell adapted for carbon dioxide

G - Physics

01

N

G01N 21/17 (2006.01) G01N 21/03 (2006.01) G01N 21/05 (2006.01) G01N 21/35 (2006.01)

Patent

CA 2403531

The invention relates to a gas cell (1) adapted for carbon dioxide and including a cavity (10) which is adapted for a chosen gas volume, a light source (11) and a light-bundle receiving unit (12). The light source (11) is placed in a focal point (F) associated with a partially elliptical mirror surface (13) forming a reflector for the light source (11) and a first defining surface of the cavity (10). Two other cavity-defining surfaces are comprised of gas-conducting surfaces (14a, 14b) orientated from the end-parts (13a', 13b') of the mirror surfaces (13a, 13b). The light-bundle receiving unit (12) is placed in a second focal point (F') associated with the partially elliptical mirror surfaces (13a, 13b).

L'invention concerne une cellule à gaz (1) conçue pour le dioxyde de carbone et comprenant une cavité (10) prévue pour un volume choisi de gaz, une source lumineuse (11) et une unité de réception de faisceaux lumineux (12). La source lumineuse (11) est placée dans un foyer (F) associé à une surface de miroir partiellement elliptique (13) qui forme un réflecteur pour la source lumineuse (11) et une première surface de définition de la cavité (10). Deux autres surfaces de définition de la cavité sont constituées de surfaces conductrices de gaz (14a, 14b) orientées depuis les parties d'extrémité (13a', 13b') des surfaces miroir (13a, 13b). L'unité de réception de faisceaux lumineux (12) est placée dans un deuxième foyer (F') associé à des surfaces miroir (13a, 13b) partiellement elliptiques.

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