NEUTRON GENERATOR Russian patent published in 2006 - IPC H05H3/06 G21G4/02 

FIELD: nuclear engineering, in particular, engineering of neutron generators, possible use, for example, in neutron tubes for logging research.

SUBSTANCE: neutron generator additionally includes sprayer of hydrogen-active metal onto target. Metal is applied during breaks in generator operation, being saturated with deuterium and tritium from gas located within the tube. Target with diameter D is positioned in plane of target base. Sprayer has frame made of vacuum dielectric material, wherein grooves are made, where with possible reciprocal movement in plane perpendicular to pipe ignition electrodes are positioned. Mobility of ignition electrodes allows by means of corrugated pipes without disruption of vacuum to alter gap between them and sprayed electrode from outside the pipe, to achieve guaranteed disruption of gap and generation of arc under effect from voltage of sprayer electric power. Sprayed electrode is made in form of a truncated cone provided with aperture. Sprayer also has protective metallic cover in form of hollow truncated cone, top of which is positioned in target hollow. Selection of angle between generatrices of cover in cross-section, passing through its axis, being equal to 2,2 arctg(0,5(D_k-D)/H), where D_k - internal diameter of cover in cross-section coinciding with plane of top of sprayed electrode cone, D - diameter of substrate, and H - distance from this plane to target plane.

EFFECT: increased lifetime of target, possible increasing of neutron output of generator by increasing flow of deuterons bombarding the target.

1 cl, 3 dwg