36 results about "Peak fitting" patented technology

ProblemTo provide a carbon film and a laminate having optical characteristics of retaining high transparency, having high refraction index and less double refractivity, being excellent in electric insulating property, being capable of being coated at good adhesion to various substrates, and being capable of being formed at a low temperature, and applications thereof.Means for Solving the ProblemThe invention relates to a carbon film which has an approximate spectrum curve obtainable by superimposing, on a peak fitting curve A at a Bragg's angle (2θ±0.3°) of 43.9°, a peak fitting curve B at 41.7° and a base line in an X-ray diffraction spectrum by a CuKa1 ray, and has a film thickness of from 2 mm to 100 μm. The intensity of the fitting curve B relative to the intensity of the fitting curve A is preferably from 5 to 90% in the approximated spectrum described above. In the carbon film, the Raman shift has a peak at a 1333±10 cm−1 in the Raman scattering spectrum, and the half-value width of the peak is from 10 to 40 cm−1. Further, the invention relates to a laminate characterized by disposing, on the substrate, a carbon aggregate film of 2 nm to 100 μm thickness comprising an aggregate of carbon particles having an approximate spectrum curve described above. Moreover, the invention relates to an optical device, optical glass, wrist watch, electronic circuit substrate, or grinding tool having the laminate described above.

The invention relates to a crystal rocking curve measurement method based on an energy resolution detector, comprising the steps of 1, selecting an X-ray tube anode target material and voltage / current parameters based on an X-ray energy range {E} for measurement; 2, determining a Bragg diffraction angle range {theta B}, a crystal rotation angle range {theta T} and a rotation stepping angle; 3, measuring a crystal diffraction energy spectrum of each rotation angle within the {theta T}; 4, correcting the effect of scattering factors in the crystal diffraction energy spectrums; 5, extracting the diffraction strength of X-ray of energy Ej in {E} within a unit interval when theta Ti = theta Bi, so as to obtain a strength variation curve of Ej; 6, performing diffraction peak fitting on the strength variation curve; 7, figuring out a first-order derivative of a fitted diffraction peak, selecting absolute values of a part of the diffraction peak where the slope of the first-order derivative is not less than 0, i.e., the left and right branches of a rocking curve, and splicing to obtain the rocking curve of Ej; 8, repeating steps 5-7 until {E} is traversed, thereby obtaining the rocking curve of the X ray of all energies in {E} to a certain lattice plane of a crystal.

The invention discloses a carbon-oxygen ratio calculation method used for determining remaining oil saturation. Firstly, a Gaussian and linear dual model is used for fitting and actually measuring carbon and oxygen energy peaks of inelastic gamma-ray spectrum data, and characteristic peak fitting coefficients are obtained; then, the same fitting model is used for fitting energy peaks corresponding to carbon and oxygen standard gamma-ray spectra; the ratio of height of measurement spectrum carbon peak Gaussian components and height of standard spectrum carbon peak Gaussian components is multiplied by the total number of carbon element standard spectra, so that inelastic gamma-ray generated by a carbon element is counted; the ratio of height of measurement spectrum oxygen peak Gaussian components and height of standard spectrum oxygen peak Gaussian components is multiplied by the total number of oxygen element standard spectra, so that inelastic gamma-ray generated by an oxygen element is counted; the two numbers are divided to generate the carbon-oxygen ratio. The method reduces influences of gamma-ray generated by other elements on the carbon-oxygen ratio, and improves response sensitivity of the carbon-oxygen ratio to oil saturation.