Divertor filtering element for a tokamak nuclear fusion reactor; divertor employing the filtering element; and tokamak nuclear fusion reactor employing the divertor

11) A filtering element comprising:

• a first flat grille portion defined by a number of straight lamellar elements parallel to one another and substantially equally spaced to define a number of parallel elongated rectangular slits;
• a base portion extending from a first end of the first flat grille portion;
• said base portion contacting a bottom portion of a target element onto which said contaminating particles are directed;
• a C-shaped elbow portion connected to a second end of the first flat grille portion;
• and
• a second flat grille portion defined by a number of straight lamellar elements parallel to one another and substantially equally spaced to define a number of parallel elongated rectangular slits;
• the second flat grille portion having a first end portion connected to the elbow portion, and a second end portion connected to an end element fitted to an intermediate element of said divertor.

12) A divertor for a TOKAMAK nuclear fusion reactor, comprising:

• at least one target element for intercepting the path of contaminating particles from a toroidal channel in which plasma is formed and confined;
• at least one grille structure interposed between a catch region, for catching said contaminating particles, and an input of purifying means;
• said catch region being at least party defined by said target element;
• and
• said grille structure is fitted with a layered structure of threadlike material facing said catch region and through which flows a mixture of deuterium, tritium, helium and impurities.

23) A TOKAMAK nuclear fusion reactor comprising:

• a toroidal channel supplied with fuel elements;
• means for generating, magnetically confining and heating a gaseous plasma inside said toroidal channel, and for initiating a nuclear fusion reaction of the fuel elements;
• a divertor communicating with said toroidal channel and for purifying the plasma supplied to the divertor itself;
• said divertor comprising:
• at least one target element for intercepting the path of contaminating particles from the toroidal channel;
• at least one grille structure interposed between a catch region, for catching said contaminating particles, and an input of purifying means;
• said catch region being at least partly defined by said target element;
• said grille structure is fitted with a layered structure of threadlike material facing said catch region and through which a mixture of deuterium, tritium, helium and impurities flows.