3 results about "Inelastic scattering" patented technology

A method for the spatially-resolved probing of bio logical tissue (102) comprises the steps of emitting, by means of at least one light source (106), a series of light pulses into the tissue and of measuring, by means of a plurality of light detectors (108), a plurality of time-resolved responses to the light pulses scattered from the tissue. The measurement is carried out with a temporal resolution better than 20 ps. A plurality of first responses is in response to light pulses at a first illumination band and is measured at a plurality of first detection bands. The first detection bands differ from each other and from the first illumination band in order to detect inelastic scattering. A plurality of second responses is in response to light pulses at a second illumination band and is measured at a second detection band. The second detection band overlaps with the second illumination band in order to detect elastic scatting. Time of flight analysis of both responses allows to e.g. use elastic scattering for locating structures (S1, S2, S3) in the tissue (102) and for assigning them to the inelastic scattering data.

The application discloses a formation density measurement method, a storage medium and equipment, and relates to the field of well logging technology. The method comprises the following steps: establishing a neutron logging model of formation density for representing the relationship between the formation density and the non-elastic gamma count ratio and the thermal neutron count ratio; and substituting the non-elastic scattering gamma ray count ratio, the thermal neutron count ratio and a plurality of calibration coefficients of a target formation of a well to be measured into the neutron logging model of formation density to obtain the formation density of the target formation of the well to be measured. According to the method, the final formation density can be obtained by using the thermal neutron and the non-elastic gamma count. The method has the characteristics of small influence of formation lithology, high measurement efficiency and simple design of related instruments.

Methods and systems for determining a carbon-to-oxygen (C / O) ratio within a formation are described. The methods and systems use a pulsed neutron tool conveyed within a borehole in the formation to measure gamma rays induced by inelastic scattering events between pulsed neutrons and elements within the formation. The resulting inelastic scattering spectra are treated to remove baseline counts arising from interactions occurring within scintillation materials of the detector and are then deconvolved using elemental standard spectra that are similarly detrended to remove baseline contributions.