The invention provides a miniature high-current
neutron generator. A three-
electrode or four-
electrode leading-out acceleration structure is employed. When the three-
electrode leading-out accelerationstructure is employed, the
neutron generator comprises an
ion source, a
plasma electrode, a vacuum cavity, a suppression electrode, a target electrode, a high-
voltage feeding mechanism and a
collimator, wherein the vacuum cavity is coaxially connected with the
ion source and the
plasma body, the suppression electrode and the target electrode are contained in the vacuum cavity, the high-
voltage feeding mechanism is connected with the vacuum cavity, the
collimator is embedded to a rear end cover of the vacuum cavity, the
ion source, the
plasma electrode and the vacuum cavity are connected withground, the suppression electrode and the target electrode are connected with negative
high pressure, and the suppression electrode is arranged at
negative bias relative to the target electrode. Whenthe four-electrode leading-out acceleration structure is employed, the
neutron generator also comprises a leading-out electrode, the leading-out electrode is contained in the vacuum cavity, the
voltage of the leading-out electrode is arranged between ground potential and negative
high pressure of the target electrode, the target electrode is of a V-shaped structure, and a hot
pipe or a fine passage mode is used for cooling. By the
neutron generator, high-
throughput and high-quality neutron beam conforming to demand can be provided for a mobile neutron camera device, a neutron treatment deviceand the like.