Patent ID: 7483517

Claim:
A device for generating X-rays ( 18 ) comprising: an electron source ( 3 ) for emitting electrons accommodated in a vacuum space ( 2 ); a liquid metal circuit including a liquid metal for emitting X-rays as a result of the incidence of electrons and a pumping means ( 11 ) for causing a flow of the liquid metal through a constriction ( 7 ) where the electrons emitted by the electron source ( 3 ) impinge upon the liquid metal; and a radiation window ( 12 ) bounding said constriction ( 7 ), which is transparent to electrons and X-rays and separates the constriction ( 7 ) from the vacuum space ( 2 ); characterized in that said constriction ( 7 ) is bounded by a compensation window ( 13 ) opposite of said radiation window ( 12 ), which separates the constriction ( 7 ) from a pressure chamber ( 14 ) containing liquid metal provided by said liquid metal circuit via a connection ( 15 ), and which, during operation, has a profile (p′) as a result of a deformation caused by a pressure in the pressure chamber ( 14 ) different from the pressure in the constriction ( 7 ) which substantially matches a profile (p) which the radiation window ( 12 ) has, during operation, as a result of a deformation of the radiation window ( 12 ) caused by a pressure of the liquid metal in the constriction ( 7 ).