Abstract:
PROBLEM TO BE SOLVED: To provide a sample observation device in which there is no variation in human, and measurement conditions can be determined easily.SOLUTION: An image is acquired from a signal obtained by irradiating an observed object including a recess with a charged particle beam, a calculation unit determines the brightness ratio between the recess of an image of the observed object and the periphery of the recess, and then the appropriateness of acceleration voltage of the charged particle beam with which the observed part is irradiated is determined, by using the relation of the brightness ratio between the recess and the periphery thereof for each of a plurality of acceleration voltages in a prestored standard sample, and a value representing the structure of the recess.
Abstract:
PROBLEM TO BE SOLVED: To provide an X-ray CT apparatus in which a photon energy distribution of emitted X-rays is flattened.SOLUTION: The X-ray CT apparatus includes an X-ray tube, a detector, a data collection part, a tube voltage generation part and a grid control part. The X-ray tube emits X-rays so as to irradiate a subject with the X-rays. The detector has a plurality of detection elements detecting photons which constitute the X-rays. The data collection part counts the number of the detected photons and collects projection data based on the result of the count. The tube voltage generation part applies a tube voltage to the X-ray tube while changing it within a prescribed cycle. The grid control part controls the grid voltage to reduce tube current when the tube voltage is increased, and controls the grid voltage to increase the tube current when the tube voltage is reduced. The X-ray CT apparatus flattens photon energy distribution of X-rays emitted from the X-ray tube.
Abstract:
PROBLEM TO BE SOLVED: To obtain a defective image even when a defect is present under an optically transparent film, in the case where the defect is observed by using an SEM based on defect position data outputted from a defect inspection device by an optical means. SOLUTION: An electronic optical system of an electron microscope is set in a first imaging condition; a defect position of a sample is so set as to be settled in a visual field of the electron microscope set in the first imaging condition by using position data of a defect of a sample obtained by inspecting the sample by using an inspection device; the position of the defect is imaged by the electron microscope set in the first imaging condition to obtain a first image of the defect position; the first image is processed to determine presence of the defect; the electronic optical system is set in a second imaging condition based on the result thereof; and the part imaged in the first condition is imaged by the electron microscope set in the second condition to obtain a second image of the defect position. COPYRIGHT: (C)2005,JPO&NCIPI