5 results about "Ionizing particles" patented technology

The invention relates to an intraoperative probe for guiding an excision tool, comprising a detection head, said detection head comprising a plurality of optical fibers each coupled to a photodetector characterized in that said optical fibers are transparent and scintillator-free, the proximal end of each of said transparent fibers is optically coupled with a single continuous scintillator optically coupled to a light guide, capable of capturing beta and / or gamma particles and emitting light in response to this interaction, the distal end of each of said transparent fibers is coupled to a photodetector, and in that said intraoperative probe is associated with a signal processing system, configured to analyze the signals delivered by said photodetectors.comprising: a means for temporal coincidence analysis of said signals delivered by said photodetectors to discriminate real events from thermal noise; a processing means enabling the reconstruction of the interaction position of particles in said continuous scintillator from the distribution of light transmitted by said optical fibers. Figure of the abstract: 1,

A filter for filtering air for an internal combustion engine and a method of operation are described herein. The air pre-cleaner (100) is configured to move ionized particles (128) toward an inner wall (126) of the air pre-cleaner (100) using electrostatic attraction or repulsion, where the particles (128) ultimately exit the air pre-cleaner (100) through the particle outlet (120). Particles (128) are ionized using a positively charged plate and a negatively charged plate. The positively charged plate generates a positively charged field (134A), thereby generating positive ions that ionize particles (128) in the air to positively charge. The negatively charged plate generates a negatively charged field (134B), thereby generating negative ions that ionize particles (128) in the air to negatively charge. The air pre-cleaner (100) may also include a cyclone section (104) that rotates the air about a central axis of the air pre-cleaner (100) to apply a centripetal force to the particles (128). The centripetal force and the electrostatic force act together to filter air.

The invention relates to an intraoperative probe for guiding an excision tool, the intraoperative probe comprising a detection head configured to detect beta particles and / or gamma radiation, the detection head comprising: • a single continuous scintillator (10) able to interact with beta and / or gamma particles and to emit, in response to the interaction, scintillation photons; • a plurality of photodetectors (30), and wherein the intraoperative probe is associated with a signal processing system configured to analyze the signals delivered by the photodetectors (30), the signal processing system comprising: • means for time-coincidence analysis of the signals delivered by a plurality of photodetectors (30), in order to discriminate actual interaction events from thermal noise of the photodetectors; • processing means configured to reconstruct an interaction position of the particles in the continuous scintillator (10) from the relative spatial distribution of the light signals detected by the plurality of photodetectors (30).

The present invention relates to a cleaning device (1) for cleaning air, which has a filter element (2) with a filter (8) for filtering particles from the air and an ionizer device (4) for ionizing particles in the air. The filter (8) has successive longitudinal folds (12) and a transverse fold (14) which contacts at least two of the longitudinal folds (12), wherein a contact element (18) is electrically connected to the transverse fold (14) and thus electrically connects the longitudinal folds (12) via the transverse fold (14) to a counter electrode (6) of the ionizer device (4). The invention also relates to a ventilation device (100) with such a cleaning device (1)

In an ionizing particle detection module, an ionizing particle traversing an ionization chamber produces a local ionization in an ionizable medium within the ionization chamber. A matrix of detection pads face the ionization chamber so that respective detection pads cover respective zones in the ionization chamber. Respective detection channels comprise respective mutually exclusive groups of detection pads. A detection channel provides an indication of a local ionization occurring somewhere within the respective zones in the ionization chamber covered by the respective detection pads of the detection channel. A cluster of detection pads is identified among the detection pads belonging to detection channels simultaneously providing indications of local ionization. A traversing point indication is provided on the basis of the cluster that has been identified if the cluster comprises a predefined minimum number of detection pads. The traversing point indication indicating where the ionizing particle has traversed the ionization chamber.