摘要:
An electron energy filter is structured by superposing a pair of yokes having electron beam passage holes and pole pieces on each side facing each other so as that the pole pieces are positioned facing each other with a certain space in between, and the electron energy filter is mounted in a transmission electron microscope to obtain a stable elemental mapping image.
摘要:
An energy filter has a plurality of deflection means and is constructed by using the plural deflection means so that an average track of an electron beam is symmetric and the normal line to a symmetric plane is inclined against an incident direction of the electron beam.
摘要:
An electron energy filter includes a first pair of magnetic poles for generating a first deflecting magnetic field and a second pair of magnetic poles for generating a second deflecting magnetic field in the same direction as the first deflecting magnetic field. The incident electrons are deflected about 90.degree. with a trace radius of AM1 through the effect of the first deflecting magnetic field, passed through a free space having a distance DL2 that is about a half of the trace radius AM1 and then are incident to the second deflecting magnetic field. The electrons are deflected about 180.degree. with a trace radius AM2 that is about a half of the curvature radius AM1 and are passed through the free space DL2. Then, the electrons are incident to the first deflecting magnetic field again where those electrons are deflected about 90.degree.. The deflected electrons are traveled like a gamma trace so that those electrons outgo in the same direction as the incident one. This filter so designed is made compact and to have a smaller aberration.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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).
摘要:
Information of a specimen holder or information of a specimen mounted on the specimen holder is stored in a memory inside the specimen holder mounted to an electron microscope. The memory is accessed to transmit the information of the specimen holder to the electron microscope, thereby ensuring that the user can use the specimen holder without mistaking characteristics of the specimen holder and danger of erroneous recording of the specimen information can be reduced.
摘要:
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.
摘要:
A method and apparatus for measuring the physical properties of a micro region measures the two-dimensional distribution of stress/strain in real time at high resolution and sensitivity and with a high level of measuring position matching. A sample is scanned and irradiated with a finely focused electron beam (23, 26), and the displacement of position of a diffraction spot (32, 33) is measured by a two-dimensional position-sensitive electron detector (13). The displacement amount is outputted as a voltage value that is then converted into the magnitude of the stress/strain according to the principle of a nano diffraction method, and the magnitude is displayed in synchronism with a sample position signal.