69 results about "Secondary radiation" patented technology

The invention discloses a broadband circularly polarized scattering reconfigurable array antenna based on variable capacitance diode loading, and the broadband circularly polarized scattering reconfigurable array antenna is composed of a plurality of scattering reconfigurable antenna units. The scattering reconfigurable antenna unit comprises a resonance structure used for radiating or receiving signals and a feed and phase shift structure arranged on the lower surface of the resonance structure. The feed and phase shift structure comprises a broadband directional coupler and a reflection type broadband phase shifter. When the scattering reconfigurable antenna unit is in a radiation working state, the broadband directional coupler radiates energy to the resonant structure; when the scattering reconfigurable antenna unit is in a scattering working state, the broadband directional coupler transmits energy to the reflection type broadband phase shifter, and the reflection type broadband phase shifter regulates energy of secondary radiation of the reflection type broadband phase shifter according to bias voltage applied to an internal variable capacitance diode. The array antenna provided by the invention is wide in working frequency band, and the radiation performance can be ensured while the scattering characteristic is reconfigurable.

The invention relates to a waveform and dispersion comprehensive optimization method for a broadband wide-angle array-fed reflector antenna, and solves the optimization problem that the consistency of gain, sidelobe and frequency band is difficult to consider at the same time. The method comprises the following steps: extracting secondary radiation field data of the array-fed reflector antenna; carrying out feed source excitation phase structured modeling; constructing a multi-target fitness function; performing joint optimization on the two excitation parameters; and applying the optimal excitation parameters. According to the invention, an excitation phase is divided into a delay line length and a phase shifter true value, so that layered regulation and control of dispersion and waveform are realized; a multi-frequency-point multi-target fitness function is constructed, and the optimization efficiency and convergence are improved in combination with an improved multi-population genetic-particle swarm optimization algorithm; on the premise that the antenna structure is not changed, comprehensive optimization of the waveform and dispersion of the directional diagram is achieved only through phase optimization, the physical significance of modeling is clear, the control strategy is simple, the calculation efficiency is high, the engineering adaptability is high, and the method is suitable for application scenes such as GEO SAR with strict requirements for the performance of the directional diagram.

The invention discloses a composite shielding collimator suitable for a complex mixed radiation field, belongs to the technical field of radiation shielding and measurement, and mainly solves the problems of low signal-to-noise ratio, high space background and mixed energy spectrum caused by the mixed radiation field of high-energy neutrons, gamma rays and the like in a fusion device and the problem that traditional equipment is heavy and difficult to flexibly adjust. The composite shielding collimator adopts a cylindrical shielding structure formed by aluminum oxide, boron-containing polyethylene, boron carbide and lead from outside to inside, and background interference and secondary radiation are remarkably inhibited by moderating and absorbing neutrons step by step and effectively shielding gamma rays; the neutron and gamma ray detector is integrally integrated on a rotatable supporting mechanism, unification of excellent radiation shielding performance and detection flexibility is achieved, and the neutron and gamma ray detector is mainly used for high-precision neutron and gamma ray diagnosis in complex radiation environments such as a magnetic confinement fusion device.

Measurement system and method are presented for determining spatial distribution of chemical elements in a sample. The system comprises a measurement unit and a control system. The measurement unit is adapted to produce primary radiation having spectral characteristic adapted to excite a number M of chemical elements in the sample to induce secondary radiation responses, and generate spectral measured data indicative of intensity of detected responses. The primary radiation interacting with the sample includes a sequence of two or more encoded radiation patterns of the primary radiation, each having its predetermined spatial intensity pattern. The measured spectral data includes a sequence of data pieces, each being modulated by the respective one of the two or more predetermined spatial intensity patterns of the encoded primary radiation and characterized by sparsity in spectral domain with respect to each spectral component of the secondary radiation response.

The invention belongs to the technical field of hydrophobic electromagnetic shielding materials, and particularly relates to an asymmetric electromagnetic shielding composite film and a preparation method and application thereof. The PNTs are polypyrrole nanotubes, after Na2MoO4. 2H2O and CH4N2S are added and subjected to a high-temperature reaction, a MoS2 flower-shaped shell structure can grow on the PNTs, the layered structure and the high specific surface area of MoS2 contribute to enhancing scattering and absorption of electromagnetic waves, and rich defect sites can induce dielectric polarization to achieve dielectric loss. Introducing the PNTs (at) MoS2 core-shell nanowire as an electromagnetic wave absorbent into a polylactic acid / dichloromethane system, then putting the system into a culture container in which a conductive filler is pre-paved, and standing and volatilizing at room temperature by adopting an ethanol solution as a volatile agent to finally obtain a three-layer asymmetric electromagnetic shielding composite film comprising the conductive filler, the PNTs (at) MoS2 structure and a polylactic acid matrix from bottom to top. And an asymmetric conductive gradient network is constructed, and the EMI shielding performance which mainly focuses on absorption is remarkably improved, so that the secondary radiation problem of electromagnetic waves is reduced.

A missile telemetry antenna array based on feed phase difference and screw coupling, comprising: inverted F antenna, missile cabin, rectifier block, RF cable and transmitter; a plurality of inverted F antennas are evenly distributed around the central axis of the missile cabin, and the inverted F antennas are fixedly installed on the outer wall of the missile cabin; the inverted F antennas are connected with the transmitter through the RF cable; a rectifier block is arranged above the head of each inverted F antenna; the rectifier block is fixedly installed on the outer wall of the missile cabin; and the rectifier block is used for flow guiding, so that no stagnation point of aerodynamic heating appears on the inverted F antenna. The present application optimizes the gain depression of the axis direction of the missile body, realizes the protection of the aerodynamic heating and force of the antenna by installing the rectifier block in front of the antenna, generates electromagnetic resonance and induced current through the installation screw of the rectifier block, realizes the secondary radiation of electromagnetic waves and the reflection guiding effect.

The invention relates to a method and a device for generating secondary radiation, in particular EUV radiation, wherein a surface (42) of a workpiece (40) is irradiated with at least one first and at least one second laser pulse. The at least one first laser pulse causes at least one first material slice (46) to be detached from the surface (42), in particular by means of a negative pressure wave, and the at least one second laser pulse causes a plasma to be generated from parts of the detached material slice (46), with secondary radiation being created. The secondary radiation is coupled out for use in a subsequent process, in particular in a lithography process.

The invention relates to a device (10) for generating a burst in secondary radiation (12), comprising a primary source (14) for generating primary radiation (16) and a secondary source (18) for generating the secondary radiation (12), wherein the device (10) is configured such that the primary radiation (16) strikes the secondary source (18) and thereby generates the secondary radiation (12), wherein the primary source (14) is configured for burst-mode operation in which several pulse-burst sequences (20), each consisting of several individual pulses (22), are generated, wherein the pulse-burst sequences (20) each have a duration in the range between 0.1 ms and 1 s. The invention further relates to a method for generating a burst in secondary radiation (12).

Laser light module (31) for a motor vehicle headlight (10) comprising a laser (18), a converter (22) arranged in the beam path of a laser radiation (30) emanating from the laser, which converter scatters part of the incident laser radiation from the laser and converts part of it into secondary radiation with a wavelength longer than that of the laser radiation, a detector (40) arranged in a beam path of radiation emanating from the converter and which generates a measured value as an actual value dependent on the amount of radiation emanating from the converter and incident on the detector, and a control unit (26) which compares the actual value with a target value and controls the laser depending on the comparison of the actual value with the target value, characterized in that the laser light module has a light deflection unit (20) with which different sub-areas (22.a, 22.1, 22.b) of the converter can be illuminated with laser radiation separately from each other in time and wherein the detector records sub-area-specific actual values ​​for different sub-areas and wherein the control unit is set up, in particular programmed, to determine the target value for a first sub-area as a function of an actual value that has been determined for a different sub-area.

The invention relates to the technical field of medical polymer materials, in particular to a high-crosslinking ultra-high molecular weight polyethylene material and a preparation method thereof.According to the method, two times of radiation and two times of heat treatment at different temperatures are combined, and high crosslinking and low free radical content are achieved through first-time radiation and remelting treatment; and secondary radiation and annealing treatment with the temperature lower than the melting point further improve the crosslinking degree and maintain high crystallinity. The obtained material is superior to a material prepared by a traditional single method in the aspects of residual free radicals, oxidation index, swelling degree, crystallinity, mechanical property, wear rate and the like, and has the advantages of high wear resistance, high oxidation resistance and high strength.

An X-ray source is disclosed, comprising: an electron source configured to provide an electron beam; an aperture configured to limit the angular distribution of the electron beam; a secondary emission limiting aperture configured to limit the angular distribution of the secondary X-ray emission, wherein the electron beam causes secondary X-ray emission to be emitted from a region surrounding the aperture; a first deflector located downstream of the electron beam limiting aperture and configured to deflect the electron beam toward the secondary emission limiting aperture; a target located downstream of the secondary emission limiting aperture and configured to generate primary X-ray emission through interaction with the electron beam; and an exit window located to transmit the primary X-ray emission, wherein the secondary emission is prevented from reaching the exit window by the secondary emission limiting aperture. A corresponding method is also disclosed.

The invention relates to an optical module (1) with a housing (2) and an optical element (3) housed therein. The housing (2) has several axially extending (7) recesses (14) on an inner surface (8) facing the optical element (3), open towards the optical element (3), for guiding a cooling gas to cool the optical element (3). The invention also relates to a laser system (20) with such an optical module (1). Furthermore, the invention relates to methods (33) for operating the laser system (20), for generating a plasma (29) of a target material (29) for generating secondary radiation (30), and for manufacturing microchips (32) or semiconductor intermediates (32).

This invention provides a foldable device and a laptop computer. The radiation enhancement device includes: a hinge, a top cover, a base, an antenna, and a radiating slot area. The top cover and the base are rotatably connected via the hinge. A connection gap exists between the hinge and the base. The antenna is disposed at the connection between the hinge and the top cover. A radiating slot area is provided on the base at the antenna projection position. The radiating slot area includes multiple radiating slots, which are used to collect and re-radiate the energy emitted by the antenna. The radiating slots are connected to the connection gap to form a secondary radiation system, thereby achieving the collection and transfer of radiated energy, effectively reducing mutual interference between the two antennas, and improving isolation. Furthermore, this embodiment also provides a virtual feed point at the edge of the connecting slot within the radiating slot area. The virtual feed point works collaboratively with the radiating slot area to optimize antenna performance and improve radiation efficiency.

a primary detector (16; 16a); irradiating the object with primary radiation (20; 20a) by the primary radiation source; detecting the primary radiation by the primary detector during each of a plurality of primary active periods (76; 76a), the primary radiation having interacted with the object; and irradiating the object with secondary radiation (24; 24b) by the secondary radiation source in secondary pulses (80; 80b) irradiated during a plurality of primary inactive periods (78; 78a), each primary inactive period being interleaved with a primary active period; no secondary pulses are irradiated during the primary active periods; and during each primary inactive period, the primary detector is inactive with respect to capturing incident radiation during the primary inactive period.

A method for carrying out an X-ray imaging process based on X-ray radiation includes: detecting a primary radiation overlaid with secondary radiation in a region of a detector directly irradiated by the X-ray radiation; detecting a secondary radiation in an outer region of the detector outside of the directly irradiated region; automatically determining an irradiation parameter dependent upon the detected primary radiation and the detected secondary radiation; and carrying out the X-ray imaging based on the irradiation parameter.

A radiation containment component for sealing a microcatheter used to deliver a mixed particulate from a delivery device to a delivery line connector of the device may include proximal and distal ends. The proximal end is configured to connect to and cover, at a connector fastening point, a distal portion of the line connector, the distal portion including a distal connector end, the line connector configured to receive the mixed particulate from the device. The distal end is configured to be disposed over and connect, at a catheter fastening point, to a proximal portion of the microcatheter connected to the line connector, the proximal portion including a proximal microcatheter end. The distal connector end is configured to be connected at a connection point to the proximal microcatheter end. The connection point is disposed between the connector fastening point and the catheter fastening point within and sealed by the component.

The invention relates to a method for generating a plasma (12) of a target material (14) for generating secondary radiation (16), in particular for generating EUV light, and / or for mediating a nuclear fusion reaction, wherein the method has a step of generating (S1) an excitation light beam (24) and a step of amplifying (S2) the excitation light beam (24) in order to form an amplified excitation light beam (46). Furthermore, the method has a step of producing (S3) a plurality of units (18) of the target material (14) and a step of exciting (S4) at least one unit (18) of the target material (14) using the amplified excitation light beam (46) and thereby generating the plasma (12) of the target material (14) in particular. According to the invention, the method has a step of modulating the excitation light beam (24) and / or the amplified excitation light beam (46) in such a way that a specified target trajectory (62) is set for the excited unit (18) of the target material (14) and / or at least one other unit. The invention further relates to a laser system (10) and to a method for producing microchips or semiconductor intermediate products.

The equipment for the destruction of viruses by means of complementary radiation consists of a technology focused on weakening the fatty layer covering certain viruses, to cause the indirect destruction of them. This technology utilizes intense, modulated light radiation, the principal emitters thereof being 460-nanometers LEDs which, with the technology of the invention, emit secondary radiation in a band ranging from 400 to 460 nanometers, in order to achieve the weakening and destruction of the fatty layer that covers viruses such as SARS-CoV-2. This light radiation is complemented with ultrasound pulses that complete the destructive effect of the interior of the virus. For this purpose, technology involving emission by means of stratified quantum excitation is employed, which uses monochromatic light-emitting diodes to achieve very-high-intensity polychromatic emissions highly controllable regarding tissue penetration.

The invention provides a surgical navigation registration method based on intraoral scanning registration and marker relay. The method comprises the following steps: acquiring dentition data of a patient before an operation, making a removable personalized biteplate marker with a registration point, exporting a same-coordinate system dentition and marker model, performing 3D printing on the marker, and calibrating to generate a configuration file; preoperative CT data without markers and the model are imported, a three-dimensional skull model is segmented and reconstructed, a dentition and skull model is registered and fused, and a marker model is transferred; selecting a marker model registration point to obtain a CT coordinate, obtaining a camera coordinate by combining a configuration file and a feature point coordinate recognized by the camera, and performing registration and alignment to establish a coordinate system corresponding relation to complete registration. In the operation, coordinate system transfer between two markers can be completed according to the requirements of different operation modes or operation areas, a marker configuration file is automatically updated, and relay registration is completed. According to the invention, secondary ray exposure can be avoided, registration precision and surgical applicability are improved, and navigation reliability is guaranteed.

The invention relates to a method for generating a plasma (12) of a target material (14) for generating secondary radiation (16), in particular for generating EUV light, and / or for mediating a nuclear fusion reaction, wherein the method comprises a step of generating (S1) an excitation light beam (24) and a step of amplifying (S2) the excitation light beam (24) to an amplified excitation light beam (46). Furthermore, the method comprises a step of generating (S3) a plurality of units (18) of the target material (14) and a step of exciting (S4) at least one unit (18) of the target material (14) with the amplified excitation light beam (46), thereby in particular generating the plasma (12) of the target material (14).According to the invention, the method comprises the step of modulating the excitation light beam (24) and / or the amplified excitation light beam (46) such that a predetermined target trajectory (62) is established by the excited and / or at least one further unit (18) of the target material (14). The invention further relates to a laser system (10) and a manufacturing method for producing microchips or semiconductor intermediates.

The invention relates to the technical field of electron optics, provides a secondary radiation excitation device and an analysis and detection instrument, and is used for solving the problem that the reliability of an electron gun and other accessories is influenced by metal steam and cations generated when a high-energy electron beam bombards a metal target material. The secondary radiation excitation device comprises an excitation source and a metal target material, the excitation source is used for emitting electron beams, and the metal target material is arranged on an advancing path of the electron beams, receives bombardment of the electron beams and generates secondary radiation; at least one conductive film layer is arranged on the bombarded working surface of the metal target material and / or at least one conductive film layer is arranged on the traveling path of the electron beam, and the conductive film layer is used for preventing metal atoms and metal cations generated when the metal target material is bombarded from passing through, so that the electron beam and secondary radiation can pass through the conductive film layer under the condition of not influencing the electron beam and secondary radiation to pass through the conductive film layer; and metal cation reverse detonation can be prevented, and metal steam is prevented from polluting devices such as insulating parts.

Radiation-emitting component with - a first radiation-emitting semiconductor chip (1) configured to generate a first primary electromagnetic radiation, and a second radiation-emitting semiconductor chip (2) configured to generate a second primary electromagnetic radiation, - a first conversion element (3) that partially converts the first and / or second primary electromagnetic radiation into a first secondary radiation, and - a second conversion element (10) that partially converts the second primary electromagnetic radiation into second secondary radiation, wherein - the first radiation-emitting semiconductor chip (1) is a first semiconductor laser diode, - the first electromagnetic primary radiation is blue primary radiation, - the first secondary radiation is green (g) secondary radiation, - the second secondary radiation is red (r) secondary radiation, - the second conversion element (10) comprises a first area (14) and a second area (15), - the first area (14) is designed to transmit the first and second primary radiation, - the second region (15) is designed to partially convert the first and second primary radiation into red (r) secondary radiation, and - the first area (14) is located in the center of the second conversion element (10) and is surrounded by the second area (15).

The utility model provides a signal auxiliary device and a charger, the signal auxiliary device comprises a shell and a radiator, the shell is configured to be detachably connected to a charging port of an intelligent terminal for a user to hold, the radiator is arranged in the shell, and the radiator is arranged in the shell. The radiator is configured to absorb electromagnetic waves emitted by the intelligent terminal and generate an electromagnetic field of secondary radiation. When the signal auxiliary device is externally connected to the intelligent terminal, the purpose of signal enhancement is achieved, the internal stacking structure of the intelligent terminal does not need to be changed at all, the improvement difficulty and cost are reduced, and the practicability is higher.

The invention relates to a method for performing X-ray imaging on the basis of an X-ray beam, characterized by the following steps: acquiring (S1) primary radiation superimposed on secondary radiation in a region (13) of a detector (4) directly irradiated by the X-ray beam, acquiring (S2) secondary radiation in an outer region (14) of the detector (4) outside the direct irradiation region (13), irradiation parameters are automatically determined (S3) from the acquired primary radiation and the acquired secondary radiation, and X-ray imaging (S5) is performed based on the irradiation parameters.

The invention relates to a method for generating secondary radiation, in which a target material (106) is provided in a target region (122), a pulse sequence (118b) consisting of laser pulses (112) is applied to the target material (106) in the target region (122), in which interaction of the target material (106) with the pulse sequence (118b) generates secondary radiation (108), in which the pulse sequence (118b) comprises a pre-pulse (112c) and a main pulse (112b) following the pre-pulse (112c), the pulse energy of the pre-pulse (112c) is between 2 [mu] J and 200 [mu] J, the pulse duration (td2) of the pre-pulse (112c) is between 200 fs and 5 ps, the pulse energy of the main pulse (112b) is between 2 mJ and 50 mJ, the pulse duration (td) of the main pulse (112b) is between 15 fs and 300 fs, and the temporal pulse distance (tz2) between the pre-pulse (112c) and the main pulse (112b) is between 1 ps and 1 ns.

The present invention relates to a method and an apparatus for performing a spectral analysis for evaluating a spectrum of a sample (12), comprising using a measurement device (11) to direct primary radiation (15) from a light source (14) onto the sample (12), secondary radiation (17) being emitted from the sample (12) or from at least one layer (13) of the sample as a result of excitation of the sample (12) by the primary radiation (15), a spectrum of the secondary radiation (17) being detected by a detector (18), the at least one detected spectrum being supplied by the detector (18) to a computer-aided evaluation device (21) for evaluation, and the at least one detected spectrum being coupled to at least one first network architecture trained for quantitative analysis of the spectrum. The method relates to a method for evaluating the detected spectra using at least one analytical neural network (22) of a first network architecture (26), wherein the neural network (22) of the first network architecture (26) is trained with a plurality of simulated spectra generated based on a physical model (S=P(ф)) using a simulation method, and wherein at least a second network architecture (41) is trained with a second analytical neural network (46) for qualitative analysis of the detected spectra, and results of at least one element concentration and / or at least one element identification of the sample (12) are output from the spectra analyzed by the neural networks (22), (46).

Dual-array loudspeaker (100) comprising: a primary transducer (104) generating a primary radiation pattern (114) having a primary radiation center axis (112) in a primary plane (110) and a primary operating angle; and a secondary transducer (106) positioned on the primary plane (110) at a distance (d) from the primary transducer (104) and producing a secondary radiation pattern (116) having a secondary operating angle (124) that differs from a secondary radiation center axis (113), wherein the secondary radiation pattern (116) differs from the primary radiation pattern (114) on the primary plane (110), and wherein the radiation center axes (112, 113) of the primary and secondary transducers (104, 106) are generally parallel and spaced apart at a distance on the primary plane (110);wherein the secondary radiation pattern (116) modifies the primary radiation pattern (114) to produce a derived primary radiation pattern (118) which is different from the primary and secondary patterns (114, 116) on the primary plane (110) and has a derived radiation mean axis oriented at a derived operating angle which is different from both the primary and secondary radiation mean axes (112, 113) and from the primary operating angle.

A method for analyzing a fluid sample by radiation. The method includes providing a cuvette having a cuvette body with an interior space for receiving the fluid sample, and an upper opening for filling and removing the fluid sample, and a lower opening for analyzing the fluid sample by the radiation, introducing the fluid sample into the interior space, irradiating the fluid sample with a primary radiation, and analyzing the fluid sample by receiving a secondary radiation originating from the fluid sample by a detection device.

Disclosed is a vibration and earthquake double-control building indoor secondary radiation noise analysis and control technology, which comprises the following steps: constructing a vibration and earthquake double-control building structure system to realize balanced control of rail transit vibration and earthquake vibration; establishing a building indoor secondary radiation noise evaluation system, determining noise evaluation indexes based on a sound-solid coupling finite element method, and constructing a building indoor sound-solid coupling finite element calculation model; carrying out multi-scene simulation analysis of the influence of building parameters on secondary radiation noise, revealing the influence law of key building parameters on indoor secondary radiation noise and determining the noise sensitive threshold of each parameter; introducing a practical sound insulation material for building indoor noise control analysis, quantifying the noise reduction effect of the sound insulation material, constructing a complete technology chain of vibration and earthquake double-control-noise characteristic analysis-sound insulation optimization, and realizing coordinated governance of vibration and earthquake double-control building structure and indoor secondary radiation noise. The present application can provide a complete technical solution for coordinated governance of vibration and earthquake double-control building structure and indoor noise.

The invention relates to a device (10) for generating a burst in secondary radiation (12), comprising a primary source (14) for generating primary radiation (16) and a secondary source (18) for generating the secondary radiation (12), wherein the device (10) is configured such that the primary radiation (16) impinges on the secondary source (18) and the secondary radiation (12) is generated thereby, wherein the primary source (14) is configured for burst-mode operation in which a plurality of pulse-burst trains (20), which each consist of a plurality of individual pulses (22), are generated, wherein the pulse-burst trains (20) each have a duration in a range between 0.1 ms and 1 s. The invention also relates to a method for generating a burst in secondary radiation (12).