An enclosure for non-organic electronic components is provided which includes an inner cavity for housing non-organic electronic components and a neutron shielding barrier surrounding the inner cavity and the electronic components housed within the cavity. The barrier is formed from a neutron reflecting material in solid or powdered form and a neutron absorbing material in solid or powdered form. An optional structural support is provided in certain aspects of the enclosure design.

Collimators and other components for use in neutron scattering experiments or to provide neutron shielding in nuclear reactors or accelerator based neutron sources are produced by additive manufacturing from neutron absorbing material, such as boron carbide (B.sub.4C) or isotopically enriched boron carbide (.sup.10B).

Collimators and other components for use in neutron scattering experiments or to provide neutron shielding in nuclear reactors or accelerator based neutron sources are produced by additive manufacturing from neutron absorbing material, such as boron carbide (B.sub.4C) or isotopically enriched boron carbide (.sup.10B).

A power generator system includes one or more heat transfer members configured to contact: a heat source in a hazardous waste repository of a directional drillhole that stores nuclear waste in one or more nuclear waste canisters, and a heat sink in the hazardous waste repository; and one or more thermoelectric generators thermally coupled to the one or more heat transfer members and configured to generate electric power based on a temperature difference between the heat source and the heat sink.

A power generator system includes one or more heat transfer members configured to contact: a heat source in a hazardous waste repository of a directional drillhole that stores nuclear waste in one or more nuclear waste canisters, and a heat sink in the hazardous waste repository; and one or more thermoelectric generators thermally coupled to the one or more heat transfer members and configured to generate electric power based on a temperature difference between the heat source and the heat sink.

The invention relates to a combination of containers intended to discharge radioactive substances into the earth's magma by pouring them into lava lakes, and to a method for using these containers. The radioactive substances are preferably placed in ovoid waste containers that are loaded into a transport container and discharged therewith into a lava lake. The transport container decomposes by melting following a first immersion at a given depth and releases the waste containers, which continue to move downwards.

Radiation-shielding composite materials and their methods of manufacture. Such methods may include adding a metal hydride to a hardenable matrix precursor, adding a reinforcing material to the hardenable matrix precursor, and hardening the matrix precursor to form a composite material that incorporates the reinforcing material and the metal hydride in a solid matrix. The resulting radiation-shielding composite materials are configured to attenuate incident radiation, and may be used in the construction of panels, laminate structures, buildings, and aerospace vehicles, among others.

Systems and methods for left radial access, right room operation peripheral interventions are provided that include left radial bases to stabilize a left arm of a cardiac patient across a midsagittal plane, transradiant right radial bases to position a right arm of the patient, and radiodense radiation reduction barriers located between the patient and a doctor.

Systems and methods for left radial access, right room operation peripheral interventions are provided that include left radial bases to stabilize a left arm of a cardiac patient across a midsagittal plane, transradiant right radial bases to position a right arm of the patient, and radiodense radiation reduction barriers located between the patient and a doctor.

A drillhole plug includes a frame or housing of a corrosion-resistant material and sized to fit within a milled portion of a directional drillhole that includes a hazardous waste repository; and a material that fills at least a portion of the frame or housing. The material exhibits creep such that the material fills one or more voids between the frame or housing and a subterranean formation adjacent the milled portion of the directional drillhole.