A shoulder transfer weight support generally having a hip or waist belt, a back support, and one or more shoulder extensions. The back support has an upper back plate attached to the shoulder extensions and a lower back plate attached to one or more hip belts. The lower back plate features a bracket shaped to receive an end of the attachment bar that joins it to the upper back plate. A spring-loaded plunger can be inserted into the attachment bar to allow for height adjustment of the device. A face shield at least partially made of a radiopaque material and can attach to the back support. One attachment option is a yoke mount with vertical sections at either end of the yoke mount. A second option involves a mount that attaches to the shoulder extension(s). The device can use a full face shield or a face shield with an open front.

A radiation-attenuation garment system having a plurality of radiation-attenuating material panels adapted to conform to the contours of a body. The radiation-attenuation garment system includes a shirt and underwear shorts formed by compression material. A plurality of radiation-attenuating material panels are removably disposed within the shirt and underwear shorts to protect the wearer from radiation exposure in the areas having the radiation attenuation panels.

A method for scanning an object in an X-ray security inspection system, wherein the X-ray security inspection system comprises an ingoing tunnel equipped with radiation-shielding curtains, an X-ray section and an outgoing tunnel equipped with radiation-shielding curtains, the method comprising: passing the object through the ingoing tunnel at a first rate of speed and with a first extent of separation between successive objects; passing the object through the X-ray section at a second rate of speed and with a second extent of separation between successive objects; and passing the object through the outgoing tunnel at a third rate of speed and with a third extent of separation between successive objects; wherein the second rate of speed is less than the first rate of speed and the third rate of speed, and wherein the second extent of separation between successive objects is less than the first extent of separation between successive objects and the third extent of separation between successive objects.

Fabricating structural components for a spent nuclear fuel container using the steps of forming cylindrical or rectangular channels to produce a structural component for a spent nuclear fuel container and applying a coating that includes tantalum-based material to the cylindrical or rectangular channels.

An x-ray shield for improved vacuum conductivity is disclosed herein. An example x-ray shield includes at least one elongate member formed from high atomic weight material shaped into a twist with at least 180 of twist.

The present invention provides a radiation resistant high-entropy alloy and a preparation method thereof. A general formula of the radiation resistant high-entropy alloy is TiZrHfVMoTa.sub.xNb.sub.y, where 0.05x0.25, 0.05y0.5, and x and y are molar ratios. The preparation method of the radiation resistant high-entropy alloy comprises the following steps: mixing Ti, Zr, Hf, V, Mo, Ta, and Nb in order, and conducting vacuum levitation induction melting or vacuum arc melting, to obtain the radiation resistant high-entropy alloy. The high-entropy alloy in the present invention has an excellent irradiation resistance, and does not suffer radiation hardening damage under simulated helium ion irradiation. When helium bubbles are of same sizes as those of conventional alloy, the bubble density of the high-entropy alloy is far lower than that of the conventional alloy, and the lattice constant thereof decreases abnormally after irradiation.

Disclosed is a composite material, comprising a polymer, a plurality of metal nanoparticles, and a surface-modifying agent (e.g., nanocellulose). Also disclosed is a method for shielding a subject from electromagnetic radiation, comprising placing one or more composite materials between the subject and a source of electromagnetic radiation, thereby reducing a dose of electromagnetic radiation received by the subject.

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 radiation-attenuation garment system having a plurality of radiation-attenuating material panels adapted to conform to the contours of a body. The radiation-attenuation garment system includes a shirt and underwear shorts formed by compression material. A plurality of radiation-attenuating material panels are removably disposed within the shirt and underwear shorts to protect the wearer from radiation exposure in the areas having the radiation attenuation panels.

A novel PET calibration phantom structure is disclosed that has reduced overall weight and reduced radiation shielding requirement while still enabling safe handling. Furthermore, when the phantom is not being used, the + radiation source can be turned off or removed from the phantom, thus, lowering the radiation exposure risk to those handling the phantom.