Abstract:
A power generator is provided. The power generator comprises a housing (102) having two ends of which at least one end (104) is provided with an ion source/pre-accelerator (200, 210) and a main accelerator (401) configured to induce neutron spallation, and a reaction chamber (601, 902, 1102) enclosing a fuel, wherein said reaction chamber (601, 902, 02) is arranged to receive free neutrons from the main accelerator (401).
Abstract:
A fusion reactor includes a columnating panel disposed between the positive electrode and negative electrode for channeling deuterium ions along predetermined paths that are likely to lead to fusion-producing collisions with previous deuterium ions. Deuterium ions are introduced to the reactor adjacent to the positive electrode, and then pass from the columnating panel, through a reduced pressure chamber, and then proceed towards the negative electrode. Once the deuterium ions strike the negative electrode, they remain attached to the negative electrode so that subsequent deuterium ions following the same channels through the columnating panel are more likely to collide with them.
Abstract:
A well logging tool includes a neutron generator to generate and emit energetic neutrons using substantially exclusively a T-T fusion reaction. The well logging tool can include measuring instrumentation for measurement and logging of formation parameters based on elastic scattering in subsurface formations of neutrons emitted by the neutron generator. The neutron generator can have a concentric layout, in which a cylindrical target structure loaded with tritium particles is located co-axially in an elongate cylindrical housing, with mobile tritium ions being accelerated radially inwardly into impact with the target structure. Production of the mobile tritium ions may be by field ionization through operation of a nano-structure field ionization array.
Abstract:
A well logging tool includes a neutron generator having an ion source for ion production by electron impact ionization wherein ionization current trajectory is determined by an electric field and an at least partially misaligned magnetic field. The electric field can be provided by an electrode arrangement having a cathode associated with a field emitter array including a multitude of nanoemitters. The magnetic field can be provided by a permanent magnet incorporated in the neutron generator to act transversely to the electric field in at least part of an ion source chamber in which an ionization current emitted by the field emitter array travels through an ionizable gas. Charged particles traveling through the ionizable gas thus follow respective trajectories that are longer than would be the case in the absence of the magnetic field, thereby increasing ionization probability.
Abstract:
An apparatus for producing thermal or epithermal neutrons in a sample has a plurality of fast neutron sources positioned around a cylindrical or spherical moderator to maximize the neutron flux at a sample placed in a void at the center of the moderator.
Abstract:
A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.