Abstract:
An electron beam sterilizing device comprises; an electron-generating filament (110), a grid (114a-b) connected to a voltage source, a beam shaper (128), and an output window (118). A high voltage source generates a high voltage potential between the electron-generating filament and the output window, for acceleration of electrons. The usability of the device is enhanced in that the electron-generating filament and/or the grid electrode comprises at least two operational portions for variation of the current and form of an output electron beam.
Abstract:
A detector (104) is disclosed for sensing an intensity of an electron beam (106) generated along a path. An exemplary detector includes an exposed conductor (105) attached to a support (112) which is configured to locate the exposed conductor (105) within a path of an electron beam (106); a grounded conductor (107) isolated from the exposed conductor (105), the grounded conductor (107) partly surrounding the exposed conductor (105) to form a plasma shield having a window positioned at least in a direction of the electron beam path.
Abstract:
The invention provides an electron beam irradiator capable of performing electron beam irradiation in a wide area at a high current density with a field emitter tip. The electron beam irradiator comprises: a vacuum chamber having a beam irradiation window formed longitudinally in an outer periphery of the vacuum chamber; a cathode placed centrally and longitudinally inside the vacuum chamber, and having a field emitter tip formed on the cathode, corresponding to the beam irradiation window; and a high voltage supply placed at one end of the vacuum chamber, and adapted to apply high voltage toward the cathode. According to the invention, electron beam irradiation can be made in a wide area without using an electromagnet as well as in a high current density without using a heater such as a filament or an additional power supply, thereby to ensure a simplified structure as well as a reduced size.
Abstract:
An electron beam source or generator (20) is described for the treatment of materials, such as toxics, as influent in a reaction chamber. Preferred embodiments of the system include a source (100) of an oxidizing agent in fluid communication with the influent. The oxidizing agent together with a dose of electron beam promotes reaction of the contaminant into less toxic forms so as to provide greatly enhanced destruction of contaminant that are otherwise resistant to oxidizing reactions.
Abstract:
A system and method for producing a continuous or pulsed source of high energy electrons at or near atmospheric pressure is disclosed. High energy electrons are used to ionize analyte molecules in ambient air through collisions with reactant ions. The device includes an electron emitter, electron optics, and a thin membrane in an evacuated tube. The electron emitter may include a photocathode surface mounted on an optically transparent window and an external source of UV photons. The transparent window may include a UV transparent window mounted on an evacuated tube and/or the evacuated tube may be a transparent tube on which a photocathode surface film is deposited. The electron optics may include successive electrodes biased at increasing voltages. The membrane may include a material transparent or semi- transparent to energetic electrons. Upon impacting the membrane, continuous or pulsed electron packets are partially transmitted through to a high pressure ionization region.
Abstract:
Ein Verfahren zum Betreiben einer Vorrichtung (1) zum Sterilisieren von Behältnissen (10), wobei die Behältnisse (10) mittels einer Transporteinrichtung (2) entlang eines vorgegebenen Transportpfades (P) transportiert werden und während dieses Transports mittels wenigstens einer ersten Strahlungseinrichtung (4) wenigstens eine Wandung der Behältnisse (10) mit einer Strahlung und insbesondere einer Ladungsträgerstrahlung bestrahlt wird, und wobei weiterhin eine Sensoreinrichtung (6) vorgesehen ist, welche Ladungsträgerstrahlung und/oder von den Ladungsträgern verursachte Strahlung erfasst und welche derart angeordnet ist, dass die auf die Sensoreinrichtung (6) auftrefende Strahlung aufgrund der Bewegung der Behältnisse (10) entlang des Transportpfades (P) Schwankungen unterworfen ist, und diese Sensoreinrichtung (6) wenigstens einen für die Strahlung charakteristischen Verlauf erfasst, wobei wenigstens ein erster Grenzwert (G1) definiert wird und ein Vergleich zwischen diesem Grenzwert (G1) und dem Verlauf durchgeführt wird. Erfindungsgemäß weist der Grenzwert (G1) einen zeitlich veränderlichen Wert auf.
Abstract:
An apparatus and method for decontaminating surfaces on a living creature. A beam of electrons is generated with an electron beam generator operating in the range of about 40 kv to 60 kv. The beam of electrons exit the electron beam generator through an exit window. The surfaces on the living creature are irradiated with the beam of electrons. The beam of electrons are of an energy sufficient to decontaminate the surfaces without damaging living tissue.
Abstract:
An electron accelerator (10) includes a vacuum chamber (46) having an electron beam exit window (24). An electron generator (31) is positioned within the vacuum chamber for generating electrons. A housing (30) surrounds the electron generator and has a first series of openings (34) formed in the housing between the electron generator and the exit window for allowing electrons to accelerate from the electron generator out the exit window in an electron beam when a voltage potential is applied between the housing and the exit window. The housing also has a second series and third series of openings (35) formed in the housing on opposite sides of the electron generator for causing electrons to be uniformly distributed across the electron beam by flattening electrical field lines between the electron generator and the exit window.
Abstract:
An electron beam source or generator (18) is described for the treatment of toxic materials in a treatment system (10) in which electron beams are reacted with a flowing influent in a reaction chamber (12). The system is modular allowing different configurations as demanded by the site and by the clean-up job. It is also portable in that it can be easily moved from place to place. If mounted on a portable base it can be taken from place to place for use.
Abstract:
본 발명은 탄소나노튜브 실(carbon nanotube(CNT) yarn)을 이용한 대면적 전자빔 또는 엑스-레이 발생 장치에 관한 것으로, 탄소나노튜브 실을 음극(cathode)의 전자빔 또는 엑스-레이 소스로 이용하여 대면적의 전자빔 또는 엑스-레이를 발생시키기 위한 것이다. 본 발명에 따른 대면적 전자빔 또는 엑스-레이 발생 장치는 복수의 탄소나노튜브 실을 구비하는 음극부와, 양극부를 구비한다. 음극부는 복수의 열로 배열된 탄소나노튜브 실을 음극으로 구비하며, 복수의 열로 배열된 탄소나노튜브 실에서 각각 전자를 방출한다. 그리고 양극부는 음극부의 상부 또는 하부에 배치되며, 음극부에서 방출된 전자가 제1 면에 입사하면, 제1 면에 반대되는 제2 면으로 대면적의 전자빔 또는 엑스-레이(X-ray)를 발생시킨다. 이때 양극부에 설치되는 양극판에 따라 전자빔 또는 엑스-레이를 발생시킨다.