摘要:
A specimen cartridge fashioned of a good thermal conductor, with an outer frame being fashioned of heat insulating material, and with a connecting rod being fashioned of a poor thermal conductor. A temperature distribution of the specimen is uniform and a temperature drift is reduced, with a thermal expansion of a specimen cartridge tilting rod not affecting the tilting angle, thereby making it possible to perform various highly accurate observations and measurements with an electron microscope.
摘要:
In a field emission electron gun system with a multi-stage acceleration tube comprising a field emission electron source, a field emission electrode for extracting the electrons, a magnetic lens having a magnetic gap between the field emission electron source and the field emission electrode or a magnetic lens having a magnetic pole which also serves as the field emission electrode, and at least two-stages of acceleration electrodes for accelerating the electrons, a magnetization current I for the magnetic lens is changed interlocking with a field emission voltage V.sub.1 applied between the field emission electron source and the field emission electrode so that IN/.sqroot.V.sub.1 (N: the number of windings of the magnetic lens) takes a predetermined value and a first acceleration voltage V.sub.2 applied between the field emission electron source and the first-stage acceleration electrode is changed interlocking with the field emission voltage V.sub.1 so that V.sub.2 /V.sub.1 takes a predetermined value.
摘要:
The electron beam having penetrated a sample is projected on a field limiting plate having an opening by means of an objective lens. That part of the electron beam which has passed through the opening of the field limiting plate, is projected upon a viewing screen by means of an image forming lens system. An electron beam deflection system is disposed between the hind focal point of the objective lens and the field limiting plate, the system having its deflection center at the hind focal point of the objective lens.
摘要:
An object of the invention is to provide a method and apparatus for observing inside structures and a specimen holder, wherein aging degradation of a good sample to a bad sample can be tracked in the same field of view, using the same specimen in order to determine the mechanism of failure. The present invention is a method for observing inside structures. The method comprises irradiating a specimen with a corpuscular beam generated from a corpuscular beam source, detecting transmitted particles transmitted by the specimen, applying a voltage to a portion of the specimen, and observing of a detection status of the transmitted particles in the voltage-applied portion as needed.
摘要:
Charged particle beam equipment has a processing unit for calibrating dimension values of an enlarged specimen image, and means for changing the amount by which a charged particle beam is scanned. Also, a specimen stand has a mechanism for holding a specimen having a periodical structure or a specimen simultaneously having a periodical structure and a non-periodical structure, and a storage device for automatically changing a magnification for an enlarged specimen image, and storing measured values at all magnifications.
摘要:
An object of the invention is to provide a method and apparatus for observing inside structures and a specimen holder, wherein aging degradation of a good sample to a bad sample can be tracked in the same field of view, using the same specimen in order to determine the mechanism of failure. The present invention is a method for observing inside structures. The method comprises irradiating a specimen with a corpuscular beam generated from a corpuscular beam source, detecting transmitted particles transmitted by the specimen, applying a voltage to a portion of the specimen, and observing of a detection status of the transmitted particles in the voltage-applied portion as needed.
摘要:
Charged particle beam equipment has a processing unit for calibrating dimension values of an enlarged specimen image, and means for changing the amount by which a charged particle beam is scanned. Also, a specimen stand has a mechanism for holding a specimen having a periodical structure or a specimen simultaneously having a periodical structure and a non-periodica structure, and a storage device for automatically changing a magnification for an enlarged specimen image, and storing measured values at all magnifications.
摘要:
A charged particle beam apparatus capable of automatically measuring an image magnification error of an apparatus and capable of automatically calibrating the image magnification in high precision is provided. To this end, while an image processing operation of either an auto-correlation function or an FFT transformation is employed with respect to a scanning image of a reference material having a periodic structure, the averaged pitch dimension of which is known, averaged periodic information owned by the scanning image is detected so as to measure an image magnification error of the apparatus. Also, the information as to the acquired image magnification error is fed back to an image magnification control means of the apparatus so as to automatically execute a calibration as to the image magnification in high precision.
摘要:
The present invention provides an ultimate analyzer which displays an element distribution image of an object with high contrast and high accuracy. A scanning transmission electron microscope and a method of analyzing elements using the ultimate analyzer is also provided. The ultimate analyzer comprises a scattered electron beam detector for detecting an electron beam scattered by an object; an electron spectrometer for energy dispersing an electron beam transmitted through the object; an electron beam detector for detecting said dispersed electron beam; and a control unit for analyzing elements based on an output signal of the electron beam detected by the electron beam detector and an output signal of the electron beam detected by the scattered electron beam detector.
摘要:
A scanning transmission electron microscope (STEM) has an electron source for generating a primary electron beam and an electron illuminating lens system for converging the primary electron beam from the electron source onto a specimen for illumination. An electron deflecting system is provided for scanning the specimen with the primary electron beam. The STEM also has a scattered electron detector for detecting scattered electrons transmitted through the specimen. A projection lens system projects the scattered electrons onto a detection surface of the scattered electron detector. An image displaying device displays the scanning transmission electron microscope image of the specimen using a detection signal from the scattered electron detector. A detection angle changing device for establishes the range of the scattering angle of the scattered electrons detected by the scattered electron detector. This structure enhances the contrast of a desired portion of the specimen under observation for a scanning transmitted image by selective establishment of detection angle ranges for the scattered electron detector.