WHAT ARE THE CAPABILITIES OF RADIOMETRIC DENSITY MEASUREMENT?
The result of the absorption measurement is influenced by the average density between the detector and the source of radiaton. All those parts which are crossed by the measuring beam and do not change during operation are included in the calibratetion. Since only the meduim to be measured is subject to change, it is possible to determine exactly the density. It is important that the average density is used. Thus one can conclude to other properites from this measurement: specific density, concentration of solid matter (i.e. coal, ore, salt) and concentration of mixes (acids, lye, content of sugar). HOW DOES IT WORK ? An electromagnetic wave called Gamma radiation with the same properties of X-rays is weakened according to its density by passing through matter . When a fixed intensity is know relating to its density, the ratio to every other density can be calculated according to the intensity it lets pass through. Like an x-ray photograph has its dark parts where the density is higher
