Organisation Europeenne Pour La Recherche Nucleaire

Radonova Laboratories Ab

Afp Imaging Corporation

Fröjdh, Christer

Christer Fröjdh

Michael Campbell

Lukas Tlustos

Rafael Ballabriga

Dag Sedin

Xavier Llopart

Henricus M Heijne

Hans-Erik Nilsson

Göran Thungström

A device for determining radon concentration is provided. The device includes a diffusion chamber, that includes a number of openings that allow radon gas to enter and exit, and a radon sensing arrangement. The radon sensing arrangement includes at least one processing device and one or more detectors, arranged inside the diffusion chamber in such a way that no part of the diffusion chamber is located at a distance, perpendicular to the detector, of more than 20 mm from the closest part of a detector. The at least one processing device is arranged to determine the radon concentration by analyzing and processing the energy spectrum of alpha particles detected by the one or more detectors.

Device and method for determining radon concentration

A method for determining a particle impact on a sensor device comprising M sensing areas, each impact causing a variation of at least one physical magnitude of several sensing portions, said method comprising the steps of: determining an impact center sensing area, where the variation of the at least one physical magnitude is substantially maximal, allocating a result of a sum of the physical magnitude variations of a first set of N sensing areas, said set including the impact center area and other sensing areas neighboring said impact center sensing area, where N is at least 2 and is strict less than M.

Method for determining a particle and sensor device therefor

Growing community of inventors

Sundsvall, Sweden

Christer Fröjdh