Patent ID: 6433335
Filing Date: 2002-08-13
Classification: G01T

Abstract:
A Geiger-Mueller triode directional sensor, comprising:a plurality of opposing subchambers are separated by a partition composed of a first material; each of said subchambers, having a radiation window, a means for collection, including at least one electrode, a gaseous mixture and said partition, creates an electrical field; a housing, having a sidewall adjacent to said radiation windows and composed of a second material permeable by gamma radiation, encloses and seals said plurality of subchambers; said second material having an atomic number lower than said first material, said first material being a high atomic number material compatible with said gaseous mixture; incident gamma rays generate a plurality of secondary electrons in said side wall; said plurality of secondary electrons, being accelerated by said electrical fields, penetrate said outer radiation windows to generate Kapitsa secondary electrons causing ionization charges within said plurality of subchambers; said ionization charges producing a plurality of electrical charges collected by said electrodes; said sensor being rotatable; and a means to detect a signal receives the plurality of electrical charges and transmits a signal to a means for data processing to count said signals for determining a point of origin for said incident gamma rays and to eliminate a plurality of background radiation signals.