METHOD AND DEVICE FOR RADIATION MEASUREMENT OF SOLIDS DENSITY Russian patent published in 2014 - IPC G01N9/00 

FIELD: instrumentation.

SUBSTANCE: invention relates to the field of measurement of density of items using X-rays. The method of radiation measurement of density of solids by means of radiation of a controlled object is carried out with a flow of wideband X-radiation, practically all back-scattered ration is recorded, and density is detected by produced data from spectra of back-scattered radiation, which is recorded simultaneously in each of two detectors, the function of distribution of back-scattered radiation is determined depending on energy for each of detectors, corrected in accordance with variation of geometry during movement, energy ranges are identified in the spectrum of back-scattered radiation, they produce integral characteristics of back-scattered X-radiation in each energy range, on the basis of which using mathematical models of dependence of integral characteristics on density under various energies of radiation they establish density of the control object, which is described for each channel (detector). In a mobile X-ray densimeter device, comprising a source of gamma radiation in a radiation shield and detectors, a contactless method is used to determine density, and the source used is generated wideband radiation of a panoramic X-ray generator, and detectors are two energy dispersion detectors for detection of spectral distribution of back-scattered radiation, the device additionally includes two distance sensors to take into account impact of variation of geometry in process of measurement during movement.

EFFECT: increased efficiency, higher accuracy and efficiency of measurement.

2 cl, 1 dwg