31 results about "Photon beams" patented technology

This invention describes a system for generating multiple simultaneous tunable electron and photon beams and monochromatic x-rays for all field simultaneous radiation therapy (AFSRT), tumor specific AFSRT and screening for concealed elements worn on to the body or contained in a container. Inverse Compton scattering renders variable energy spent electron and tunable monochromatic x-rays. It's spent electron beam is reused for radiation with electron beam or to generate photon beam. Tumor specific radiation with Auger transformation radiation is facilitated by exposing high affinity tumor bound heavy elements with external monochromatic x-rays. Heavy elements like directly iodinated steroid molecule that has high affinity binding to estrogen receptor in breast cancer and to iodinated testosterone in prostate cancer or with directly implanted nanoparticles into the tumor are exposed with tuned external monochromatic x-rays for tumor specific radiation therapy. Likewise, screening element's atom's k, l, m, n shell specific Auger transformation radiation generated by its exposure to external monochromatic x-rays is used to screen for concealed objects. Multiple beam segments from a beam storage ring or from octagonal beam lines are simultaneously switched on for simultaneous radiation with multiple beams. The beam on time to expose a tumor or an object is only a few seconds. It also facilitates breathing synchronized radiation therapy. The intensity modulated radiation therapy (IMRT) and intensity modulated screening for concealed objects (IMSFCO) is rendered by varying beam intensities of multiple simultaneous beams. The isocentric additive high dose rate from simultaneously converging multiple beams, the concomitant hyperthermia and chemotherapy and tumor specific radiation therapy and the AFSRT's very low radiation to the normal tissue all are used to treat a tumor with lower radiation dose and to treat a radioresistant and multiple times recurrent tumors that heave no other alternative treatments.

In various exemplary embodiments, the present invention provides a system for the light-induced directed self-assembly (LIDSA) of periodic sub-wavelength nanostructures, including: a light source for delivering a beam of photons; a reaction chamber disposed adjacent to the light source; a gas including one or more precursor materials disposed within the reaction chamber; and a substrate disposed within the reaction chamber, wherein the substrate is positioned and configured to receive the beam of photons; wherein the beam of photons causes a periodic sub-wavelength nanostructure of one or more constituents of the one or more precursor materials to form on a surface of the substrate. In various exemplary embodiments, the present invention also provides an associated method.

A method of real-time radiotherapy beam visualization is provided that includes disposing a free-form flexible scintillating sheet on a subject of interest, irradiating the subject of interest with a source of ionizing radiation, where the free-forming flexible scintillating sheet emits light when irradiated by the therapeutic photon beam, collecting the emitted light and collecting ambient light reflected from the subject of interest and surrounding objects using a camera, where the collected light is converted to image data by the camera, where the image data is communicated to an appropriately programmed computer, and processing the image data to determine beam characteristics and the characteristics of the subject of interest, using the appropriately programmed computer, where the beam characteristics and the characteristics of the subject of interest are displayed in real-time to a machine operator enabling real-time verification of treatment delivery.

The invention provides an extrahigh energy electron beam or photon beam radiotherapy robot system which comprises a laser driving system, a laser plasma accelerator, an electron beam focusing system, a photon beam aiming system, a robot body and a laser beam stabilization system. The laser driving system generates and spreads intense laser pulses to the laser plasma accelerator installed at the tail end of the robot body, and therefore electron beams are generated; the electron beam focusing system guides the electron beams to diseased parts of a patient; the photon beam aiming system enables the electron beams to generate high energy photon beams so that extrahigh energy electron beam radiotherapy or photon beam radiotherapy can be performed; the robot body spreads the electron beams or the photon beams to the diseased parts of the patient in multiple directions; the laser beam stabilization system monitors the positions of laser beams and corrects errors. The extrahigh energy electron beam or photon beam radiotherapy robot system is more compact, more efficient, cheaper and easier to operate and has higher performance than an external irradiation radiation therapy system in the prior art.

The present invention comprises a method and apparatus to increase the efficiency of photovoltaic conversion of light into electrical power and to achieve operation at higher optical power and therefore higher electrical power. Preferred embodiments increase the efficiency of photovoltaic power conversion of any source of a beam of photons by spatially dividing the beams into a plurality of individual beamlets, each beamlet focusing on an active photovoltaic region. The preferred architecture of the apparatus of the invention comprises spatially separated photovoltaic cells to substantially match the pattern of the spatially separated plurality of beamlets. Preferred embodiments result in a significant reduction in ohmic losses and current shunting, thereby increasing photovoltaic conversion efficiencies.

The invention provides a nanometer plasma array laser device and a manufacturing method of the laser device and belongs to the technical field of optics. According to the method, photons excited by an electrical pump semiconductor nanowire p-n junction array are utilized for interacting with surface metal-dielectric films to generate surface plasmon polaritons (SPP), and then photon beams generated in a nanowire resonant cavity are restrained and regulated. According to the method, the double advantages of semiconductor nanometer structure geometric limitation and limitation and constraint of a surface plasma mode field to beams are combined, a semiconductor nanowire is utilized for integrating a working substance and the resonant cavity and achieving mode field constraint on surface plasmas, and finally the nanometer plasma laser device is formed.

A method for testing the sensitivity of electronic components and circuits against particle and photon beams using plasma acceleration, in which the flexibility of the multifaceted interaction can produce several types of radiation such as electron, proton, ion, neutron and photon radiation, and combinations of these types of radiation, in a wide range of parameters that are relevant to the use of electronic components in space, such as satellites, at high altitudes or in facilities that work with radioactive substances such as nuclear power plants. Relevant radiation parameter ranges are accessible by this method, which are hardly accessible with conventional accelerator technology. Because of the compactness of the procedure and its versatility, radiation testing can be performed in smaller laboratories at relatively low cost.

A quantum information processing system comprises a light source, a detector, at least one spatial light modulator and at least one optical lens. The light source is configured to provide a beam of entangled photons. The at least one optical lens is configured to project the resultant beam onto the spatial light modulator, either by direct imaging or by performing a full or partial optical Fourier transform. Said spatial light modulator includes a plurality of discrete pixels and is configured to select one or more of the plurality of discrete pixels to generate a resultant beam from said beam of entangled photons. The resultant beam from said spatial light modulator is projected onto the detector. For optical computation, such as search algorithms, the configuration and projections are repeated to find the optimal solution.

A glass system of a solar photovoltaic panel contains: an energy guiding assembly in which two energy collecting layers, two energy converting layers, and an energy storage system are fixed, the energy guiding assembly conducting a light energy in a single direction by ways of nano particles, the two energy collecting layers being provided to collect photon beams of the energy guiding assembly, each energy converting layer transmitting an electrical energy in each energy collecting layer toward the energy storage system. The energy guiding assembly also includes two glass layers on a top surface and a bottom surface of the energy guiding assembly respectively to retain a collecting panel, a reflecting panel, and a plurality of high vision light emit bonding films. The two energy collecting layers and the two energy converting layers cover two outer sides of the energy guiding assembly respectively.

A dispenser is provided for producing a nuclear hyperpolarised contrast agent. The dispenser comprises a chamber to receive a compound. A photonic hyperpolarisation system generates an OAM-photonic beam endowed with orbital angular momentum and is arranged to direct the OAM-photonic beam into the chamber so as to generate nuclear hyperpolarisation in the compound. The chamber has an output over which the hyperpolarised compound can be issued. Since the hyperpolarisation is generated ex-vivo, the penetration depth of the OAM-photonic beam in biological tissue is irrelevant for the present invention.

The invention discloses a method for introducing dislocation on a silicon chip. The surface of the silicon chip is radiated by energy beams enough to damage silicon lattices; density-controlled dislocation is introduced into the radiated area; the density of the dislocation is controlled by the intensity of the energy beams, and the density of the introduced dislocation is higher when the energy is stronger; the dislocation can be positioned on the surface of the silicon chip or in the silicon chip; and the energy beams can be electron beams, ion beams, electromagnetic wave beams, alpha X-ray beams, neutron beams or photon beams. The method introduces the controllable dislocation on the silicon chip, is simple and convenient to operate, is well compatible with the conventional integrated circuit process, has the advantages of no damage or contamination to the silicon chip, strong controllability and high repeatability, and is favorable for large-scale industrial production.

A generating device includes at least one pulsed laser source that delivers primary photons having at least one wavelength in a single spatial mode and in pulses having a high pump energy, forming means that act on the primary photons to deliver an input beam, and at least one optical fiber having at least ten modes between which the pump energy is initially distributed, and able to relocate the latter via a non-linear effect into a fundamental mode, before generating secondary photons of various wavelengths by wavelength conversions from the wavelength of the primary photons in the fundamental spatial mode.

A high-luminance quantum correlation photon beam generator a photon beam of a quantum correlated pair characterized by includes: a laser light source (1) operable to emit a laser pumped light; a parametric crystal (2) operable to generate a pair of two photons of a signal photon and an idler photon on receiving the pumped light from the laser light source (1) to emit two photon beams along two non-concentric cones; a beam splitting means (5) operable to split a signal photon beam (6) from an idler photon beam (7); a mode inverter (10) operable to rotate one of the annular signal photon beam (6) and the idler photon beam (7) 180° around its geometric center; a phase adjusting means (8) operable to adjust phases of the signal photon beam (6) and the idler photon beam (7) based on an optical time delay; and a beam coupling means (14) operable to overlay the signal photon beam (6) with the idler photon beam (7) in a common-line polarized annular shape by the mode inverter (10) to bring them into a quantum correlated state.

The invention relates to a generation device (DG) which comprises: at least one pulsed laser source (SL) outputting primary photons having at least one wavelength in a single spatial mode and in pulses having high pump energy; shaping means (MM) acting on the primary photons in order to output an input beam (FE); and at least one optical fibre (FO) having at least ten modes between which the pumpenergy is initially distributed and suitable for relocating the latter by non-linear effect in a fundamental mode, before generating secondary photons with different wavelengths by converting wavelengths from the wavelength of the primary photons in the fundamental spatial mode.

An in-line test method and system for fast analyzing the grade of big ore block in metal mine or ore dressing plant is composed of intelligent controller, radioactive source, detector, scaled belt and industrial control computer. The said radioactive source and detector, which are isolated by lean uranium, are arranged on a frame. the included angle between photon beams emitted by radioactive source and received by detector must be less than 60 deg.C. The said detector has heater and temp controller for constant temp (40-60 deg.C). Its advantages include high analysis speed and efficiency and low error less than 0.4%.

A method, apparatus, and system for improving the angular resolution of an image. A plurality of photon beams originating from a scene are received at a sensor system. Each of the plurality of photon beams is interfered with a corresponding source photon beam in a plurality of source photon beams to form a plurality of interference beams. Each of the plurality of source photon beams has a non-classical state. Fluctuations in a photon-number of the each of the plurality of source photon beams are reduced to within selected tolerances. An output signal is formed based on the plurality of interference beams. The output signal is configured for use in generating an image of the scene.

The method comprises:detecting the positions (uo, vo) and (u1, v1) of said photonic beam (L) according to the coordinate axes X, Y on a first and second plane XY, which cut an optical axis X at a first and second point, respectively;comparing the results of said positional detections (uo, vo) and (u1, v1), and:if there are discrepancies which lie outside the margin of error (p), adjusting the angle of the photonic beam (L) according to the angle α and / or the angle β in order to overcome said discrepancies; orif there are no discrepancies which lie outside said margin of error (p), considering the angle of said photonic beam (L) as being properly adjusted.The system is adapted to implement the method set out by the invention.

The invention relates to the technical field of radiation dose measurement, provides a construction method of a medical linear accelerator photon source model function, and is used for calculating the dose of rays in a radiation treatment scheme. A source model of a treatment photon beam of the accelerator comprises two parts, namely a source model of original ray photons and a source model of scattered ray photons. Physical parameters in source model functions of the two parts are emission point position coordinates of particles, projection values of unit momentum vectors in the three-dimensional orthogonal direction and energy of the particles. The photon fluence information, the energy spectrum information and the photon unit momentum direction information on any phase space plane can be accurately calculated by utilizing the model function, the source model construction method and thought are suitable for construction of photon beam source models of various nominal energies of accelerators used in radiotherapy, and the method has the advantages of being few in modeling parameters, the physical significance of each parameter in the function is clear, the use is convenient, and the radiation field photon distribution information can be reproduced truthfully by using a mathematical analysis method.