83results about "Chemical to radiation conversion" patented technology

The invention relates to a device for producing a fluid containing a radioactive constituent, the device comprising: a shielded chamber (5) within which is located an isotope container (6) housing a radioactive isotope (7), the shielded chamber including first and second fluid connections (12,13) to opposing ends of the isotope container and a fluid conduit (14,15) extending from each of the first and second fluid connections to a fluid inlet (16) and a fluid outlet (17) respectively characterised in that the fluid inlet comprises a single spike (22) having a substantially circular cross-section, the spike being adapted to penetrate the rubber seal of a vial and the spike having two bores, the first bore extending from a first aperture adjacent the tip of the spike to a fluid connection with the fluid conduit and the second bore extending from a second, separate aperture in the spike to a filtering air inlet.

Systems and methods for using antiprotons for terminating unwanted or undesirable cells which can be used in the treatment of conditions caused by the existence and/or proliferation of such undesirable cells. Such conditions include cardiovascular ailments, Parkinson's disease, wet macular degeneration, endocrine disorders, dermatological ailments, and cancer. Because of the unique nature of antiprotons and their annihilation characteristics, the preferred antiproton delivery device (1010, 1015, 1030) embodiments further incorporate detector arrays (1050a), capable of detecting characteristic emissions in the course of treatment.

A method to extract out of water, concentrate and reformulate [18F] fluorides includes passing a dilute aqueous [18F] fluoride solution entering by an inlet (1) in a cavity (6) embodying an electrochemical cell with at least two electrodes (3, 4, 5), flowing in the cavity (6) and coming out of the cavity (6) by an outlet (2), an external voltage being applied to the electrodes. One electrode (4) is used as an extraction electrode, another one (3) is used for polarizing the solution, and configured so that at least the extraction electrode (4), either used as a cathode or as an anode, is in contact with and polarizes a large specific surface area conducting material (7), contained in the cavity (6). The extracted ions are released from the surface of the large specific surface area conducting material (7) by turning off the applied external voltage. During its passage in the cavity (6), the dilute aqueous [18F] fluoride solution entirely crosses and internally soaks the large specific surface area conducting material (7).

A device is provided that can capture and store electrically neutral excited species of antimatter or exotic matter (a mixture of antimatter and ordinary matter), in particular, excited positronium (Ps*). The antimatter trap comprises a three-dimensional or two-dimensional photonic bandgap (PBG) structure containing at least one cavity therein. The species are stored in the cavity or in an array of cavities. The PBG structure blocks premature annihilation of the excited species by preventing decays to the ground state and by blocking the pickoff process. A Bose-Einstein Condensate form of Ps* can be used to increase the storage density. The long lifetime and high storage density achievable in this device offer utility in several fields, including medicine, materials testing, rocket motors, high power/high energy density storage, gamma-ray lasers, and as an ignition device for initiating nuclear fusion reactions in power plant reactors or hybrid rocket propulsion systems.

A container inspection system with CT tomographic scanning function, which is related to a large container inspection system for Customs, is disclosed, comprising: a radiation source; an annular rotatable rack with the radiation source provided at the outside thereof and rotated with it; an annular rack body for supporting the annular rotatable rack in a vertical plane; a driving device for rotating the annular rotatable rack; a detector array provided in the inner side of said annular rotatable rack and opposed to a side where the radiation source is provided; a transmission device passing through the annular rotatable rack and annular rack body, and transmitting a container truck to be detected in linear movement; a remote control device for controlling the operations of the radiation source, the driving device and the transmission device, and receiving/displaying the image signal obtained by the detector array. Not only can general inspection of the objects to be detected be undertaken, but also does repeated tomographic inspection of suspicious locations within the inspected objects, thus achieves effective accuracy improvement of the contrabands detection.

A chamber for manipulating a work product is formed in layers as a series of nested shells. The shells have an outer structural casing and an electromagnetic shield that surrounds a superconducting shell. The superconducting shell is immersed in a cryogenic coolant contained in a reservoir. The work product is further manipulated using kinetic energy and electromagnetic energy.

Deterministic generation of nonclassical photons by producing a dilute gas of exciton-polaritons in a solid-state microcavity that includes a periodic array of potential well traps. A photon-exciton frequency detuning is modulated in the microcavity to produce a polaritonic quantum phase transition from a superfluid state to a Mott-insulator state. The nonclassical photons are then generated simultaneously by radiative decay of exciton-polaritons in the microcavity. The nonclassical photons may be indistinguishable single photons, in which case the dilute gas of exciton-polaritons is produced such that on to average there is one polariton per potential well trap. Alternatively, the generated nonclassical photons may be polarization-entangled photon pairs, in which case the dilute gas of exciton-polaritons is produced such that on average there are two polaritons per potential well trap.

A linear accelerator system for producing PET radioisotopes, and taking the form of a beam-generation-to-target structure which includes form-fitting, self-contained, omnidirectional radiation shielding structure.

The present invention relates generally to an apparatus of assembling a capsule for neutron-irradiation experiments. The capsule may contain test specimens to develop nuclear fuel, and may comprise a capsule main body and protection tube that may be assembled and disassembled using separate joining means. The present invention provides a capsule assembling apparatus that may enable safe and easy assembly/disassembly of the capsule placed at a given depth in a working pool through remote working. The capsule assembling apparatus may comprise a base structure loading the capsule main body, a guiding pipe of a given length extending from the base structure to provide a pathway through which the capsule main body is loaded on the base structure, a damper fixing the capsule main body to the guiding pipe, and a coupler coupling the capsule main body with the protection tube.

An apparatus and method for detecting, locating, and analyzing chemical compounds located within a test subject using subatomic particle activation. In a first embodiment, an excitation source excites a target to simultaneously produce beams each consisting of certain subatomic species, for example fast neutrons and alpha particles. The test subject (and chemical compounds contained therein) is irradiated by the fast neutrons, thereby stimulating the emission of prompt gamma rays. Gamma and alpha detectors are positioned relative to the test subject and target(s) so as to detect the emitted prompt gamma rays and alpha particles in substantial coincidence, and the known physical relationship between the beams is used to spatially locate the activated chemical compound. Energy spectra derived from the gamma detectors are filtered to eliminate all non-relevant spectral artifacts, thereby 1) permitting the creation of a plurality of parallel coincidence channels; 2) reducing the subsequent signal processing required; and 3) increasing the overall accuracy and efficiency of the chemical compound identification and analysis processes. In a second embodiment, thermal neutron-induced gamma emissions are detected and analyzed in conjunction with the fast neutron-induced gammas to provide a warning signal of the possible presence of certain types of contraband. A multi-beam/multi-target embodiment is also disclosed for more accurate spatial location. A method for calibrating and evaluating the efficacy of the system under varying test parameters is further disclosed.

The invention discloses a production method of radioactive tracer and includes the following steps: a high power laser is adopted to match with a primary target to generate particle beam; the particle beam completes nuclear reaction with the matter on a radioactive tracer target after focusing and accelerating so as to generate target radioactive tracer; finally, the target radioactive tracer is transmitted to a radioactive tracer synthesis system to synthesize radioactive tracer which is used in human body visualization. The method overcomes the disadvantages of the prior radioactive tracer production method through adopting cyclotron such as low efficiency, incapability of on-line production, big equipment volume, complex design, incapability of repeated starting up for use in a short time, poor flexibility in use and high maintenance cost; meanwhile, the invention has the advantages of instant on-line production of radioactive tracer, realization of desktop radioactive tracer production system, low shielding requirements of equipment, overall performance improvement of radioactive tracer production system and reduction in production and operating costs.

The present invention is a controlled high-purity apparatus and method for transporting a well defined gas volume from a larger gas volume with high pressure into a smaller volume by cryogenic cooling. Particularly, a refilling apparatus includes a first fluid container, a second fluid container, and an interface for coupling the first and second fluid containers to a supply of gas. The first fluid container has a volume corresponding to a certain amount of liquid condensed from the gas, which upon phase transformation provides a desired gas pressure within the total volume of the first and second fluid containers. The first fluid container is preferably a coil of tubing for submersion into a bath of liquid nitrogen to cryogenically cool the first fluid container, thereby condensing the gas into liquid form. The invention is particularly well-suited for providing [¹⁸O]oxygen gas to a [¹⁸O]O₂/F₂ target system producing [¹⁸F]fluorine gas. The desired pressure is ideally 40 to 50 bar in order to supply the [¹⁸O]O₂/F₂ target system with an appropriate amount of [¹⁸O]oxygen gas for a commercially significant number of production runs between refills of the refilling apparatus.

A generator that allows for a non-fission based method of producing and recovering ^99mTc from neutron-irradiated molybdenum. This generator system is based on the isolation of ^99mTc, as the decay product from a source of ⁹⁹Mo labelled molybdenum carbonyl Mo(CO)₆ through a distillation process. The ^99mTc obtained from this distillation is produced with high efficiency and purity in a solvent-free form, which can then be dissolved in water or other solvents to produce a solution at the required specific activity and concentration, as reasonably determined by the operator.

Disclosed herein is a high current solid target for radioisotope production at a cyclotron using a metal foam, and more specifically, a high current solid target for isotope production, which attaches a metal foam to the rear surface of the solid target plate. A high current solid target for isotope production including a metal foam according to the present invention may exhibit excellent cooling performances to increase the amount of proton beam current irradiated on the solid target compared to conventional planar-type solid targets. Because the irradiation of the increased proton beam current may increase the amount of an isotope produced per unit time and even an irradiation of proton beam in a short time may allow for production of a desired amount of an isotope, the solid target may be usefully used for production of medical cyclotron nuclides.

The electrochemically active elements of the transition series include both the third, fourth and fifth d block elements, the lanthanides and the actinides. These transition elements have distinct electrochemistry for driving many chemical reactions, in particular the absorption of large volumes of hydrogen and the formation of various hydrides. In particular, Pd, Th, Ti, Ag, Au and La hydrides exhibit anomalous effects. The chemical reactions for forming, decomposing and rearranging the bonds of metal hydrides involve large energies. Furthermore these metal hydrides and mixtures are here demonstrated to exhibit greater strange cold nuclear reactions both cold fission and cold fusion. This invention provides magnetic, x-ray, laser irradiation, pressure, neutron beam, beta ray, alpha ray, gamma ray and catalytic technology for accommodating the special conditions for more controlled and accelerated cold nuclear reactions within the dense plasma (pycno) provided by the lattice of these metal hydrides. Under these conditions, the cold nuclear reactions are controllably enhanced to rates for practical energy sources but the very nonsynergistic nature of these pycnonuclear phenomena diminishes the possibility of runaway or explosive systems.

The present invention claims a method for forming [¹⁸F] fluoride complexes suitable for performing radio-labelling reactions to generate [¹⁸F] fluorinated species. The present invention also provides for an apparatus for forming [¹⁸F] fluoride complexes suitable for performing radio-labelling reactions to generate [¹⁸F] fluorinated species. Kit claims for formation of [¹⁸F] fluoride complexes suitable for performing radio-labelling reactions to generate [¹⁸F] fluorinated species are also provided.

A chamber or series of chambers for manipulating a work product is formed in layers as a series of nested shells. The shells have an outer structural casing and an electromagnetic shield that surrounds a superconducting shell. The superconducting shell is either room temperature or immersed in a cryogenic coolant contained in a reservoir. The work product is further manipulated using kinetic energy to move it through electromagnetic field amplifiers to facilitate energy release for power generation or motive propulsion.

Hafnium is recovered from irradiated tantalum by: (a) contacting the irradiated tantalum with at least one acid to obtain a solution of dissolved tantalum; (b) combining an aqueous solution of a calcium compound with the solution of dissolved tantalum to obtain a third combined solution; (c) precipitating hafnium, lanthanide, and insoluble calcium complexes from the third combined solution to obtain a first precipitate; (d) contacting the first precipitate of hafnium, lanthanide and calcium complexes with at least one fluoride ion complexing agent to form a fourth solution; (e) selectively adsorbing lanthanides and calcium from the fourth solution by cationic exchange; (f) separating fluoride ion complexing agent product from hafnium in the fourth solution by adding an aqueous solution of ferric chloride to obtain a second precipitate containing the hafnium and iron; (g) dissolving the second precipitate containing the hafnium and iron in acid to obtain an acid solution of hafnium and iron; (h) selectively adsorbing the iron from the acid solution of hafnium and iron by anionic exchange; (i) drying the ion exchanged hafnium solution to obtain hafnium isotopes. Additionally, if needed to remove residue remaining after the product is dried, dissolution in acid followed by cation exchange, then anion exchange, is performed.