Abstract:
The purpose of the present invention is to eliminate the effort in placement and extraction of samples in observations using transmitted charged particles. A charged particle beam device (601) is characterized by having: a charged particle optical lens tube that irradiates a sample (6) with a primary charged particle beam; a sample stage on which a light emitting member (500) that emits light because of charged particles that have come by transmission internally in the sample (6) or scattering therefrom or a sample platform (600) having the light emitting member (500) is attachably and detachably disposed; and a detector (503) that detects the light emitted by the light emitting member.
Abstract:
Ordinary charged particle beam apparatuses have each been an apparatus manufactured for dedicated use in making observations in a gas atmosphere at atmospheric pressure or at a pressure substantially equal thereto. There have existed no devices capable of simply making observations using an ordinary high-vacuum charged particle microscope in a gas atmosphere at atmospheric pressure or at a pressure approximately equal thereto. Furthermore, ordinary techniques have been incapable of observing the same spot of the sample in such an atmosphere using a charged particle beam and light simultaneously. This invention thus provides an apparatus including: a charged particle optical tube that irradiates a sample with a primary charged particle beam; a vacuum pump that evacuates the inside of the charged particle optical tube; a diaphragm arranged to separate a space in which the sample is placed from the charged particle optical tube, the diaphragm being detachable and allowing the primary charged particle beam to permeate or pass therethrough; and an optical microscope positioned on the opposite side of the charged particle optical tube across the diaphragm and the sample, the optical microscope having an optical axis thereof aligned with at least part of an extension of the optical axis of the charged particle optical tube.
Abstract:
A sample observation method includes irradiating a sample with a primary charged particle beam, detecting a secondary charged particle signal obtained by the irradiating, and observing the sample. The method is characterized by causing the primary charged particle beam generated in a charged particle optical lens barrel, which is maintained in a vacuum state, to be transmitted or passed through a separating film disposed to isolate a space in which the sample is placed from the charged particle optical lens barrel; and detecting a transmitted charged particle beam obtained by irradiating the sample, placed in an atmospheric pressure or a predetermined gas atmosphere of a slightly negative pressure state compared with the atmospheric pressure, with the primary charged particle beam.
Abstract:
A control device (50) for a charged particle beam device (100) tilts the irradiation axis of a primary electron beam (4) to the left, straight, or to the right via tilting coils (11, 12) each time the primary electron beam (4) scans the surface of a sample (15) over a single scanning line. When the irradiation axis is changed, the focal point of the primary electron beam (4) is adjusted by a focal point-adjusting coil (14) based on the tilt of the irradiation axis in order to take a left-tilted observation image, a non-tilted observation image or a right-tilted observation image of the surface of a sample (15) for each scanning line. The left-tilted observation images, non-tilted observation images and right-tilted observation images for the scanning lines obtained up to this point are simultaneously displayed on the same display device (31). In this way, focused non-tilted observation images and focused tilted observation images can be taken and displayed nearly simultaneously.
Abstract:
In order to provide a charged-particle radiation apparatus capable of evaluating and distinguishing the analysis position in a sample subjected to X-ray analysis in the stage before performing X-ray elemental analysis, and also making it possible for an analyst to perform, in a short period of time and without reworking, analysis for which high reliability is ensured, the present invention provides a charged-particle radiation apparatus provided with an X-ray detector, wherein a first back scattered electron detector (15) on the same axis as the X-ray detection surface of the X-ray detector (12 (25-30)) is disposed integrally with or independently from the X-ray detector (12), an X-ray signal being detected by the X-ray detector (12) simultaneously with or separately from detection of a back scattered electron signal by the first back scattered electron detector (15)
Abstract:
The present invention provides a scanning charged particle beam device including a sample chamber (8) and a detector. The detector has: a function of detecting light at least ranging from the vacuum ultraviolet region to the visible light region, of light (17) having image information which is obtained by a light emission phenomenon of gas scintillation when the sample chamber is controlled to a low vacuum (1 Pa to 3,000 Pa); and a function of detecting ion currents (11, 13) having image information which are obtained by cascade amplification of electrons and gas molecules. Accordingly, it becomes possible to realize a device which can deal with observation of various samples. Further, an optimal configuration of the detection unit is devised, to thereby make it possible to add value to an obtained image and provide users in wide-ranging fields with the observation image. In addition, the detector is made usable in combination with a detector for high vacuum, to thereby make it possible to provide wide-ranging users with the image, irrespective of the vacuum mode.
Abstract:
An electron microscope has a large depth of focus in comparison with an optical microscope. Thus, information is superimposed on one image in the direction of depth. Therefore, it is necessary to accurately specify the three-dimensional position and density of a structure in a specimen so as to observe the three-dimensional structure of the interior of the specimen by using the electron microscope. Furthermore, a specimen that is observed with the optical microscope on a slide glass is not put into a TEM device of the related art. Thus, performing three-dimensional internal structure observation with the electron microscope on a location that is observed with the optical microscope requires very cumbersome preparation of the specimen. By controlling a vector parameter that defines the interrelationship between a primary charged particle beam and the specimen and by irradiation with the primary charged particle beam with a plurality of different vector parameters, images of transmitted charged particles of the specimen that correspond to each of the vector parameters are obtained. Irradiation with the primary charged particle beam is performed on the specimen that is arranged either directly or through a predetermined member on a detector which detects charged particles transmitted through or scattered by the interior of the specimen.
Abstract:
Provided is a charged particle beam apparatus (111) to and from which a diaphragm (101) can be easily attached and detached, and in which a sample (6) can be arranged under vacuum and under high pressure. The charged particle beam apparatus includes: a lens barrel (3) holding a charged particle source (110) and an electron optical system (1,2,7); a first housing (4) connected to the lens barrel (3); a second housing (100) recessed to inside the first housing (4); a first diaphragm (10) separating the space inside the lens barrel (3) and the space inside the first housing (4), and through which the charged particle beam passes; a second diaphragm (101) separating the spaces inside and outside the recessed section (100a) in the second housing (100), and through which the charged particle beam passes; and a pipe (23) connected to a third housing (22) accommodating the charged particle source (110). The first diaphragm (10) is attached to the pipe (23), and the pipe (23) and the third housing (22) can be attached to and detached from the lens barrel (3) in the direction of the optical axis (30). A space (105) surrounded by the first housing (4) and the second housing (100) is depressurized, and the sample (6) arranged inside the recessed section (100a) is irradiated with a charged particle beam.
Abstract:
Ordinary charged particle beam apparatuses have each been an apparatus manufactured for dedicated use in making observations in a gas atmosphere at atmospheric pressure or at a pressure substantially equal thereto. There have existed no devices capable of simply making observations using an ordinary high-vacuum charged particle microscope in a gas atmosphere at atmospheric pressure or at a pressure approximately equal thereto. Furthermore, ordinary techniques have been incapable of observing the same spot of the sample in such an atmosphere using a charged particle beam and light simultaneously. This invention thus provides an apparatus including: a charged particle optical tube that irradiates a sample with a primary charged particle beam; a vacuum pump that evacuates the inside of the charged particle optical tube; a diaphragm arranged to separate a space in which the sample is placed from the charged particle optical tube, the diaphragm being detachable and allowing the primary charged particle beam to permeate or pass therethrough; and an optical microscope positioned on the opposite side of the charged particle optical tube across the diaphragm and the sample, the optical microscope having an optical axis thereof aligned with at least part of an extension of the optical axis of the charged particle optical tube.
Abstract:
A sample observation method includes irradiating a sample with a primary charged particle beam, detecting a secondary charged particle signal obtained by the irradiating, and observing the sample. The method is characterized by causing the primary charged particle beam generated in a charged particle optical lens barrel, which is maintained in a vacuum state, to be transmitted or passed through a separating film disposed to isolate a space in which the sample is placed from the charged particle optical lens barrel; and detecting a transmitted charged particle beam obtained by irradiating the sample, placed in an atmospheric pressure or a predetermined gas atmosphere of a slightly negative pressure state compared with the atmospheric pressure, with the primary charged particle beam.