6 results about "Elastic scattering" patented technology

Apparatus and method for real-time detection and classification of individual airborne particles using multi-angle polarized elastic scattering and employing intelligent data analysis techniques to achieve differentiation of particles.

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.

Apparatus and method for real-time detection and classification of individual airborne particles using multi-angle polarized elastic scattering and employing intelligent data analysis techniques to achieve differentiation of particles.

The invention provides a water tank granularity and mineral characterization method based on laser scattering spots and a Raman spectrum, and belongs to the technical field of underwater detection. A seabed fan deposition process is reproduced and a deposition body is generated; a multi-mode optical detection system integrating laser ranging, elastic scattering imaging and Raman spectrum acquisition is adopted, a probe scans along a preset path, and bottom type tracking and maximum signal acquisition are realized in combination with real-time bottom type feedback and a dynamic optical compensation mechanism; performing multi-scale denoising and feature enhancement on the scattering image and the Raman spectrum through discrete wavelet transform; particle size distribution is inversed based on a space contrast method, and a three-dimensional particle size diagram is generated in combination with Kriging interpolation; pure mineral Raman signals are extracted through spectrum baseline correction and water interference deduction, and high-precision recognition of mineral components is achieved through spectrum library matching; and establishing a granularity-mineral correlation model through clustering analysis and partial least squares regression. The invention provides a systematic and reliable method for collaborative analysis of the sedimentary structure and the material composition.

To provide an evaluation method capable of evaluating the density of a sample.SOLUTION: An analysis method according to the present invention includes a step of acquiring a backscattered electron spectrum of a sample, a step of performing waveform separation on an elastic scattering peak of the backscattered electron spectrum to separate the elastic scattering peak into a plurality of peaks and acquiring information on a position of each peak, a width of each peak, and an intensity of each peak, a step of specifying each element constituting the sample from the position of each peak and the width of each peak, and a step of obtaining a density of each element constituting the sample from the intensity of each peak.SELECTED DRAWING: Figure 2