G - Physics – 01 – T
Patent
G - Physics
01
T
G01T 1/24 (2006.01)
Patent
CA 2197196
This invention discloses a method for determining gamma ray photon energy comprising irradiating a high resistance n-type or p-type cadmium telluride alloy crystal (10) with gamma ray photons, providing first and second electrical contacts (20, 30, 40) which are in electrical communication with the crystal (10), which are respectively negatively and positively biased and which provide free flow of electrons from the negatively biased contact to the crystal and wherein holes, generated by absorption of the photons in the crystal, recombine with said electrons and determining the photon energy by measuring the amount of charge generated per photon absorbed by the crystal.
L'invention porte sur un procédé de détermination de l'énergie des photons de rayons gamma consistant: à irradier un cristal (10) d'alliage de tellurure de cadmium de type n ou p à forte résistance par des photons de rayons gamma; à constituer un premier et un second contact (20, 30, 40) reliés électriquement au cristal (10) et polarisés respectivement négativement et positivement et qui produisent des flux d'électrons libres allant du contact polarisé négativement vers le cristal, où des trous, créés du fait de l'absorption des photons par le cristal, se recombinent avec lesdits électrons; et à déterminer l'énergie des photons en mesurant la charge produite par photon absorbé par le cristal.
El-Hanany Uri
Lachish Uri
Tsigelman Alex
Orbotech Medical Solutions Ltd.
Ridout & Maybee Llp
Urigal Technologies Ltd.
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