Abstract:
A transmission electron microscope is capable of correcting, with high efficiency and high accuracy, an electron energy loss spectrum extracted from each of measured portions included in an electron energy loss spectral image with two axes representing the amount of an energy loss and positional information on a measured portion. The transmission electron microscope has an electron spectroscope and a spectrum correction system. The spectrum correction system corrects a spectrum extracted from each measured portion included in an electron energy loss spectral image acquired from a sample based on a difference between a spectrum extracted from a standard portion of a standard spectral image and a spectrum extracted from a portion different from the standard portion.
Abstract:
In order to correct measurement magnification and measurement position of a spectral image with high efficiency and with high accuracy using an electronic spectroscope and a transmission electron microscope regarding the spectral image formed in two orthogonal axes which are an amount of energy loss axis and a measurement position information axis; a method for correcting magnification and position and a system for correcting magnification and position, both of which are capable of correcting measurement magnification and measurement position of a spectral image with high efficiency and with high accuracy using an electronic spectroscope and a transmission electron microscope regarding the spectral image formed in two orthogonal axes which are an amount of energy loss axis and a measurement position information axis, are provided.
Abstract:
There are provided an element distribution observing method and an element distribution observing apparatus under utilization of core-loss electrons capable of restricting artifact caused by either a thickness or density of a specimen, or an occurrence of the artifact caused by a diffraction contrast. Electron beam intensities in a total three different energy-loss areas of two energy-loss areas not containing any core-loss electrons and one energy-loss area are calculated to attain an element distribution on the basis of the corresponding three energy-loss areas and an electron beam intensity.
Abstract:
An object of the present invention is to provide a standard specimen for a charged particle beam enabling highly precise measurement of sub-micron to several 10 μm in size on an image and an apparatus using the standard specimen. In order to attain the above described object, the present invention provides a standard specimen for a charged particle beam including two different specimens for magnification or measurement calibration and a charged particle beam apparatus using the specimens.
Abstract:
Drift generated at the time of photographing a TEM image is corrected simultaneously with photographing, so that a TEM image free form influence of drift is photographed. While the TEM image is recorded, drift in the place out of the view field subjected to recording is measured from moment to moment by another TV camera or a position sensitive detector. Drift is corrected by the movement of the specimen due to a specimen holder or by the movement of the image due to an image shift coil.
Abstract:
An electron beam device is provided with an electron beam diffraction image analysis section for calculation of the lattice distance from the diffraction image taken into by the TV camera for observation of the electron beam diffraction image, the EDX analysis section for acquiring a composition of the material, the data base for retrieval of material characterization, and the material characterization section having the data base retrieval function. The material characterization section characterizes the material by retrieving the retrieval data base, based upon the lattice distance data transferred from the electron beam diffraction image analysis section and the element data transferred from the EDX analysis sectio.
Abstract:
Letting core-loss energy of an objective element be E.sub.c, and width of the energy selection slit be .DELTA.E. Initially, a pre-edge image obtained by increasing an acceleration voltage of an electron gun by E.sub.c -.DELTA.E and a pre-pre-edge image obtained by increasing an acceleration voltage by E.sub.c -.DELTA.E are taken with the same exposure time, and an intensity ratio R of the pre-edge image to the pre-pre-edge image is calculated. Next, a post-edge image obtained by increasing an acceleration voltage by E.sub.c is taken with an exposure time t.sub.pre, and a pre-edge image is taken with an exposure time R.times.t.sub.pre. An element distribution image of the objective element can be obtained by simply performing image subtraction of the pre-edge image from the post-edge image in a computer.
Abstract:
A transmission electron microscope system equipped with an energy filter and capable of displaying a two-dimensional distribution map of element of concern on a real time basis. A transmission electron microscope incorporating an energy filer is equipped with a television camera for recording two types of energy-loss images in separate frame memories, respectively. For effecting background processing for image data, intensity of an image to be stored in one frame memory is attenuated with a constant ratio by an intensity regulating mechanism. A signal indicative of difference between the image data stored in the respective frame memories is outputted to a monitor as a picture signal.
Abstract:
In a spectral image formed by two orthogonal axes, one of which is an axis of the amount of energy loss and the other of which is an axis of positional information, by the use of an electron spectrometer and a transmission electron microscope, distortion in the spectral image of a sample to be analyzed is corrected with high efficiency and high accuracy by comparing electron beam positions calculated from a two-dimensional electron beam position image formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information) with reference electron beam positions, and calculating amounts of the distortion based on the differences of the electron beam positions. Method and apparatus are offered which correct distortion in a spectral image with high efficiency and high accuracy, the image being formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information).