The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 1990
Filed:
Mar. 10, 1989
Richard C Lanza, Brookline, MA (US);
Joseph R Votano, Tewksbury, MA (US);
Expert Image Systems, Inc., Somerville, MA (US);
Abstract
Radiation detection methods and apparatus measure ionizing radiation propagating from a radiation source, utilizing a chamber having an electrically conductive sheet, an electrode assembly spaced apart from the conductive sheet and segmented into a plurality of electrically discrete electrode segments, and an ionizable medium disposed between the electrode assembly and conductive sheet, for absorbing the ionizing radiation and generating charged particles in proportion to the radiation energy absorbed. An electrical potential can be provided between the electrode assembly and conductive sheet, so that respective electrode segments collect the charged particles. Elements are provided for comparing the number of charged particles collected on respective electrode segments, to provide a measure of the energy distribution of the ionizing radiation, and for compensating for changes in capacitance or electrical potential between the electrode segments and the electrically conductive sheet elements.