DEVICE MEASURING DENSITY Russian patent published in 1998 - IPC

FIELD: Compton computation tomography under conditions of one-side access to object of test. SUBSTANCE: device measuring density incorporates first and second radiation sources, first and second detectors, collimation unit with axial and peripheral collimation channels, mechanism moving collimation unit, formation and re-computation unit, information processing unit, initial data unit, storage, mechanism moving object, half-tone display, synchronizer and mechanism positioning sources and detectors. Scanning of object by axes x, y and z is provided by means of mechanism moving collimation unit and mechanism moving detectors. Three-dimensional matrix of values ρ_ijk corresponding to three-dimensional distribution of density in object of test that can be brought out to screen of half-tone display in any plane is formed as result in storage. Device provides for layer-by-layer measurement of density of body as function of its thickness under conditions of one-sided access to it. EFFECT: increased functional reliability and stability of device. 1 cl 2 dwg