Electrode of metallic material, and gyrolaser comprising at least one such electrode

Abstract

An electrode ( 2 ) of metallic material comprising an axis of revolution ( 6 ) and a bottom face ( 2 a ) of outer diameter greater than the outer diameter of a top face ( 2 b ), characterized in that it comprises a fin ( 10 ) of revolution about said axis of revolution ( 6 ), on the bottom part of the lateral face ( 2 c ), said fin ( 10 ) having a radial length L and a thickness h such that the ratio L/h is below a threshold, L and h observing the following relationship: ? ?  indicates text missing or illegible when filed  in which: E represents the Young's modulus of the metallic material; X represents the minimum deflection tolerated by the fin; and σ represents the thermal stress acting on the fin.

1 . An electrode ( 2 ) of metallic material comprising an axis of revolution ( 6 ) and a bottom face ( 2   a ) of outer diameter greater than the outer diameter of a top face ( 2   b ), characterized in that it comprises a fin ( 10 ) of revolution about said axis of revolution ( 6 ), on the bottom part of the lateral face ( 2   c ), said fin ( 10 ) having a radial length L and a thickness h such that the ratio L/h is below a threshold, L and h observing the following relationship: 
       
         
           
             
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                   indicates text missing or illegible when filed 
                 
               
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       in which:
 E represents the Young's modulus of the metallic material; 
 X represents the minimum deflection tolerated by the fin ( 10 ); and 
 σ represents the thermal stress acting on the fin ( 10 ). 
 
     
     
         2 . The electrode ( 2 ) as claimed in  claim 1 , being a cathode. 
     
     
         3 . The electrode ( 2 ) as claimed in  claim 1 , in which the fin ( 10 ) is straight. 
     
     
         4 . The electrode ( 2 ) as claimed in  claim 3 , being a cathode. 
     
     
         5 . The electrode ( 2 ) as claimed in  claim 1 , in which the fin ( 10 ) is crenellated. 
     
     
         6 . The electrode ( 2 ) as claimed in  claim 5 , being a cathode. 
     
     
         7 . The electrode ( 2 ) as claimed in  claim 1 , in which said threshold depends on the metallic material of the electrode ( 2 ). 
     
     
         8 . The electrode ( 2 ) as claimed in  claim 7 , in which the fin ( 10 ) is straight. 
     
     
         9 . The electrode ( 2 ) as claimed in  claim 8 , being a cathode. 
     
     
         10 . The electrode ( 2 ) as claimed in  claim 7 , in which the fin ( 10 ) is crenellated. 
     
     
         11 . The electrode ( 2 ) as claimed in  claim 10 , being a cathode. 
     
     
         12 . A gyrolaser ( 1 ) comprising at least one electrode ( 2 ) as claimed in  claim 1 , further comprising a glass or vitroceramic element ( 3 ), a malleable metallic link material ( 4 ) arranged between the bottom face ( 2   a ) of the electrode ( 2 ) and the glass or vitroceramic element ( 3 ), and a coating material ( 5 ) insulating the link material ( 4 ) to safeguard against corrosion phenomena, in which said fin ( 10 ) is arranged inside said insulating coating material ( 5 ). 
     
     
         13 . The gyrolaser as claimed in one of  claim 12 , in which the glass or vitroceramic element ( 3 ) is of ZERODUR®. 
     
     
         14 . The gyrolaser as claimed  claim 12 , in which said insulating coating material ( 5 ) comprises glue. 
     
     
         15 . The gyrolaser as claimed in  claim 12 , in which said malleable metallic link material ( 4 ) comprises indium. 
     
     
         16 . The gyrolaser as claimed  claim 15 , in which said insulating coating material ( 5 ) comprises glue. 
     
     
         17 . The gyrolaser as claimed in  claim 12 , in which the metallic material of the electrode ( 2 ) comprises aluminum. 
     
     
         18 . The gyrolaser as claimed in  claim 17 , in which said insulating coating material ( 5 ) comprises glue. 
     
     
         19 . The gyrolaser as claimed in  claim 17 , in which said malleable metallic link material ( 4 ) comprises indium. 
     
     
         20 . The gyrolaser as claimed in  claim 19 , in which said insulating coating material ( 5 ) comprises glue.