73 results about "Radar-absorbent material" patented technology

A system, method and apparatus for providing additional radiation shielding to a container holding radioactive materials. The invention utilizes a sleeve-like structure that is slid over a container holding high level radioactive materials to add radiation shielding protection. Because the sleeve-like structure and container are non-unitary and slidably separable from one another, crane lifting capacity is not affected. In one aspect, the invention is an apparatus comprising: a tubular shell constructed of a gamma radiation absorbing material and having an inner surface that forms a cavity having an axis, the cavity having an open top end and an open bottom end; a plurality of spacers extending from the inner surface of the shell toward the axis of the cavity, the spacers extending a first height from the inner surface of the tubular shell; and one or more flange members located at or near the open top end of the cavity extending from the tubular shell toward the axis of the cavity, the flange member extending a second height from the inner surface of the shell, the second height being greater than the first height.

The present invention discloses a carbon nano tube film micromachinery infrared detector with simple structure, high resolution, broad spectrum respose range, high sensitivity and low cost, and is characterized by that it includes micromachinery with a certain backing material, pick-up circuit and micromachinery resonator on which a layer of carbon nano tube film as light emission absorbing material is grown. The absorption coefficent ela of carbon nano tube film to infrared radiation can be up to 0.98, so that it possesses high sensitivity and small noise, and the detection power of said detector also can be raised. The microresonator can be made up by using MEMS process, can be produced in alarge scale.

A radiation concentrator suitable for use in concentrating solar radiation for efficient and low cost solar photovoltaic use, especially for example in window-mounted devices, has a radiation-transmissive element for receiving incident radiation and includes a radiation-absorbing material for absorbing incident radiation and emitting emissive radiation, a radiation output for transmitting concentrated emissive radiation, the transmissive element acting as a wave-guide for guiding the emissive radiation to the radiation output. The concentrator is characterized by the radiation-absorbing material comprising one or more photoluminescent dyes capable of phosphorescence which exhibit a high quantum yield of phosphorescent emission that is spectrally shifted from the material's absorption.

Cylindrical inertial confinement fusion reaction chambers are disclosed according to some embodiments of the invention. These chambers can include neutron moderating/absorbing material, radiation absorbing material, and debris collection material. These chambers can also include various injection ports, nozzles, beam ports, sacrificial layers, absorbers, coolant systems, etc. These chambers can be used with directional and/or omni-directional targets.

A method and apparatus for improving the safety of a surgical procedure involving delivery of laser energy to a tissue, involves enhancing or increasing the detectability of radiation emitted by the tissue or any portion of a surgical instrument or device by providing a sacrificial material that absorbs radiation emitted during the surgical procedure, increasing the temperature of a surface on which the material is disposed and/or causing damage radiation to be emitted in a way that can be detected by monitoring the temperature of the surface and/or radiation, including infrared and/or visible light, emitted by the surface. In a preferred embodiment of the invention, the radiation absorbing material is a sheath arranged to surround the fiber.

The present invention relates to a radiation-absorbing heat exchange sheet material on the absolute bolometer for measuring the solar radiation, especially to a diamond composite film used on the absolute bolometer and the preparing method thereof. The diamond composite film used on the absolute bolometer in the invention is prepared by compounding the pure diamond piece layer which is taken as the heat sink material and the black boron-doping diamond film that is taken as the light radiation absorbing material. The preparing method is firstly preparing the heat sink diamond piece with a one-time chemical vapor deposition, and then depositing the carbon nano-tube film layer on the diamond piece with a floating catalytic method. The diamond composite film of the invention has the advantages of strong heat and impact resistance, higher absorbing rate to the radiation and the rate is up to 99%, and stability for a long period; and the surface adhesions of the heat sink material and radiation-absorbing material are excellent. Thereby the measuring precision and sensitiveness of the bolometer can be increased and the measuring period can be shortened, and the adaptability of the absolute bolometer in the working condition of satellite is increased.

A reflective mask (e.g., an EUV reflective mask) and a method of making such a mask are disclosed. The mask includes an absorbent substrate and a reflective coating overlying the substrate. The reflective coating is patterned to include a circuit design that is to be transferred onto one or more wafers, and more particularly onto one or more die on the wafers, during semiconductor fabrication processing. The mask includes no other radiation absorbent material, and the occurrence and severity of dead zones, which commonly occur in conventional reflective masks and which degrade the fidelity of pattern transfers, are thereby mitigated. A methodology for inspecting the mask via the transmission of visible, UV or deep-UV radiation through the mask is also disclosed.

Radiation-absorbing, plastics-based material consisting of a polymer matrix with an absorber material or mixture of absorber materials contained therein, wherein the absorber material or mixture of absorber materials is selected from phosphates, condensed phosphates, phosphonates, phosphites and mixed hydroxide-phosphate-oxoanions of copper (Cu), tin (Sn), calcium (Ca) and/or iron (Fe) and is present finely distributed, dispersed or dissolved in the polymer matrix.

The present invention relates to a method for preparing a miniature radiation detecting chip, and the method comprises the following steps: preparing a substrate; growing radiation absorbing material on the surface of the substrate; bonding the thermistor on the substrate surface; depositing the heating wire material on the substrate surface; and growing protecting film of the heating wire on the substrate which is provided with a heating wire material film. The structure of the radiation detecting chip prepared by the method of the invention is simple, the dimension and quality are all well controlled; as the substrate adopts the material which has the advantages of high heat conductivity, high insulating property and low heat capacity, and the heating wire and radiation-absorbing material are firmly integrated on the substrate with a MEMS method, the techniques of pasting and the like are not used therefore the heat transmission can be faster. The radiation detecting chip prepared by the method of the invention can be used as the novel embedded scaling reference source on the spacecraft and can also be applied to other thermal radiation detecting fields.

A radiation absorbing material includes a carrier, and a heterogeneous element doped in the carrier. A content of the heterogeneous element in the carrier is higher than 15 atomic percent (at %).

An adhesive patch for attaching at least one EM probe to a subject's body, the adhesive patch comprising a planar member having at least one layer of radiation absorbing material and having at least one opening formed within the radiation absorbing material to allow the propagation of EM radiation via the opening from one side of the planar member to the other. The adhesive patch further comprises at least one layer of an adhesive attached over at least part of a bottom surface of the planar member, which adhesive layer may be applied so as to form a pattern on the bottom surface, the pattern comprising at least one adhesive-covered portion and at least one adhesive-free portion.

The present invention relates to a heat exchange film which is used in the absolute bolometer and the preparing method thereof, especially to a radiation-absorbing boron-doping diamond composite film and the preparing method. The radiation-absorbing boron-doping diamond composite film of the invention is prepared by compounding the pure diamond piece layer which is taken as the heat sink material and the black boron-doping diamond film that is taken as the light radiation absorbing material. The preparing method is firstly preparing the heat sink diamond piece with a one-time chemical vapor deposition, and then preparing the black boron-doping diamond film on the diamond piece with a secondary chemical vapor deposition. The radiation-absorbing boron-doping diamond composite film of the invention has the advantages of strong heat and impact resistance, higher absorbing rate to the radiation and the rate is up to 99%, and stability for a long period; and the surface adhesions of the heat sink material and radiation-absorbing material are excellent. Thereby the measuring precision and sensitiveness of the bolometer can be increased and the measuring period can be shortened, and the adaptability of the absolute bolometer in the working condition of satellite is increased.

The invention relates to a curable radiation absorbing composition applicable in paste-like form for providing protection against x-ray and/or gamma radiation wherein said composition comprises the following ingredients: a) a radiation absorbing material comprising metal grains having an average grain size between 0.5 mm to 5 mm, b) a polymeric resin as a binder material, c) a particulate material, wherein the average particle size of the particulate material is smaller than the average grain size of the metal grains. The composition can be applied e.g. by spreading to various surfaces, preferably floors, to provide protection against x-ray or gamma radiation in a thin layer.

The invention relates to a radiation absorption composite diamond heat exchange membrane and a preparing method for radiation measuring equipment. The composite diamond heat exchange membrane is combined by a black diamond membrane layer containing graphite phase and a pure diamond chip layer, wherein the pure diamond chip layer serves as heat sink material, and the black diamond membrane layer containing the graphite phase serves as optical radiation absorption material. The preparing method is as follows: preparing the heat sink diamond chip through a primary chemical vapor deposition, and then preparing the black diamond membrane layer containing the graphite phase on the diamond chip through a secondary chemical vapor deposition. The composite diamond heat exchange membrane has the advantages of high thermal-shock resistance, and stable and invariable absorption capacity of the radiation absorption material layer. The composite diamond heat exchange membrane improves the measuring accuracy and sensitivity of a radiometer with a higher radiation absorption capacity of 99- 99.2 percent.

A method is provided for supplying a 3D X-ray image data record for a moving object. The said object contains highly X-ray radiation-absorbent material. A correction is made in respect of the highly absorbent material in 2D forward projections obtained from a 3D-X-ray image data record. The forward projections are calculated using 3D motion fields, which are derived from original 2D X-ray image data records.

The present invention relates to a radiation detector basing on the flat-plate substrate; the detector comprises a substrate, a radiation-absorbing material, a thermistor and a heating wire; the substrate adopts the material which has the advantages of high heat conductivity, high insulating property and low heat capacity; the heating wire and theremistor respectively contact and are fixed on the surface of the substrate, the radiation-absorbing material is arranged at the upper side of the heating wire, and an insulating layer is used for insulating between the heating wire and the radiation-absorbing material. The invention has the advantages of small volume, small heat capacity; the electric impedance of the heating wire is large and the effect of electric impedance of the wire lead can be ignored; the sensitivity of the thermistor is high and the dynamic area can be detected is large, the radiation detector can be taken as the novel embedded scaling reference source on the spacecraft and can also be applied to other thermal radiation detecting field.