The present invention relates to rigid structures and composite materials thereof for providing radiation attenuation/shielding. Some embodiments pertain to a radiation shielding apparatus including: a plurality of positionable radiation-shielding stacks of tiles. The stacks are subsequently and adjacently arranged in a contiguous configuration. A tile positioning mechanism allows movement of tiles within a stack between a stacked (retracted) position and an extended position. In the extended position, the tiles of each of the plurality of radiation shielding stacks at least partially overlap tiles of subsequent and adjacent tile stack at corresponding opposing side-margins thereof.

A self-supporting inorganic and radiation-hard neutron shielding panel for use in absorbing thermal neutrons. The panel is constructed substantially of concrete and includes a high level of boron by weight to enhance the absorption of thermal neutrons. A layer of radiation-resistant fiber reinforcement within the panel enables production of a thin, strong panel that is self-supporting and easily transportable. Mounting means are included on the panel to facilitate easy mounting on a wall or similar surface. The panels are constructed entirely of inorganic materials and include at least 58% boron by weight to maximize their effectiveness in shielding against thermal neutrons. Further disclosed are methods for forming the neutron-shielding panels.

A self-supporting inorganic and radiation-hard neutron shielding panel for use in absorbing thermal neutrons. The panel is constructed substantially of concrete and includes a high level of boron by weight to enhance the absorption of thermal neutrons. A layer of radiation-resistant fiber reinforcement within the panel enables production of a thin, strong panel that is self-supporting and easily transportable. Mounting means are included on the panel to facilitate easy mounting on a wall or similar surface. The panels are constructed entirely of inorganic materials and include at least 58% boron by weight to maximize their effectiveness in shielding against thermal neutrons. Further disclosed are methods for forming the neutron-shielding panels.

The present disclosure relates to an isotope production apparatus. In one implementation, the apparatus may include a cyclotron for producing a particle beam, a shielding surrounding the cyclotron, and a target system within the shielding. The shielding may include a first layer having a hydrogen content of at least 100 kg/m.sup.3 and a second layer having at least 4900 kg/m.sup.3 of material having an atomic number equal to or higher than 26, and at least 29 kg/m.sup.3 of hydrogen.

A storage apparatus is provided for dry storage of radioactive nuclear waste. The storage apparatus comprises a sealed canister containing the radioactive nuclear waste and an outer ventilated metal storage overpack (VMSO). The VMSO has a plurality of vents to enable ambient air flow through the VMSO and around the canister to thereby dissipate heat from the canister. The VMSO has a side wall having an inner metal layer and one or more sets of alternating layers. Each set includes a neutron absorbing layer adjacent to another metal layer so that neutron absorbing and metal layers alternate throughout the side wall. The neutron absorbing layer or layers are designed to absorb neutron particles radiated from the radioactive nuclear waste and the metal layers are designed to absorb gamma particles radiated from the radioactive nuclear waste as well as radiated from the neutron absorbing layer or layers that result from reactions associated with absorption of neutron particles.

A scatter radiation protection device is provided. The scatter radiation protection device includes a barrier that is movable in an x-direction, a y-direction, and a z direction; a skirt that is movable in an x-direction; and a sliding track having an upper surface and a lower surface. The barrier and the skirt are configured for connection to the sliding track, and the barrier and the skirt provide for at least 0.5 millimeters of lead (mmPb) equivalence.

A system of shields designed to provide substantially greater protection, head to toe, against radiation exposure to health care workers in a hospital room during procedures which require real-time imaging. The shields are placed around the patient and the x-ray table and provide protection even when the x-ray tube is moved to various angles around the patient.

A system of shields designed to provide substantially greater protection, head to toe, against radiation exposure to health care workers in a hospital room during procedures which require real-time imaging. The shields are placed around the patient and the x-ray table and provide protection even when the x-ray tube is moved to various angles around the patient.

The invention relates to anti-multipactor coating deposited onto a substrate that can be exposed to the air and its procedure of obtainment by simple chemical methods. Furthermore, the present invention relates to its use for the fabrication of high power devices working at high frequencies.

According to one aspect of the present invention, a silver nanowire mesh (Ag NW-mesh) electrode and a fabricating method thereof. The Ag NW-mesh electrode includes a flexible substrate; and a mesh pattern layer which is disposed on the flexible substrate and in which a plurality of first meal lines and a plurality of second metal lines are composed of Ag NWs and intersect each other in an orthogonal or diagonal direction to form a grid pattern, wherein the first metal lines and the second metal lines of the mesh pattern layer form an angle of 35 degrees to 55 degrees with respect to a bending direction.