摘要:
In orer to supply a scanning charged-particle microscope that can achieve both the improvement of resolution and that of focal depth at the same time, a scanning charged-particle microscope is supplied which is characterized in that a passage aperture 12 for limiting the passage of the charged-particle optical beam 2 is located between the charged-particle source 1 and the scanning deflector 7, and in that a member 126 for limiting the passage of the charged-particle optical beam 2 is provided at least in the center of the passage aperture 12.
摘要:
The present invention relates to a recording system used to record information with an ion beam and read the recorded information with an electron beam, and the specification discloses an ultrahigh-density recording system utilizing a focused beam, comprising the steps of arranging a focused beam generating source (1) in opposition to a recording medium (8), and applying a focused ion beam from the focused beam generating source (1) to the recording medium (8) in accordance with digital information while varying the relative position of the recording medium and focused beam generating source, to thereby record information on the recording medium; and then applying a weak focused beam from the focused beam generating source to the recording medium while varying the relative position of the recording medium and focused beam generating source, to thereby vary the secondary electrons, fluorescent X-rays of an absorption current, which is generated in the recording medium, and reproduce the information.
摘要:
In an inspection device evaluation system or a charged particle beam microscope, a magnification error and a resolution evaluation value are calculated based on an image of a dimensional calibration specimen. Then, a measurement length error of the image is calculated based on the magnification error and the resolution evaluation value.
摘要:
An ion beam (113) focused into a diameter of at most 0.1 µm bombards substantially perpendicularly to the superlattice layers of a one-dimensional superlattice structure and is scanned rectilinearly in a direction of the superlattice layers so as to form at least two parallel grooves (108, 109, 110, 111) or at least two parallel impurity-implanted parts (2109) as potential barrier layers, whereby a device of two-dimensional superlattice structure can be manufactured. At least two parallel grooves (114, 115, 116, 117) or impurity-implanted parts are further formed orthogonally to the potential barrier layers of the two-dimensional superlattice structure, whereby a device of three-dimensional superlattice structure can be manufactured. In addition, deposition parts (2403, 2404, 2405) may well be provided by further depositing an insulator into the grooves (108, 109, 110, 111, 114, 115, 116, 117) which are formed by the scanning of the ion beam. Owing to these expedients, the portions of the two-dimensional and three-dimensional superlattice structures can be manufactured with ease and at high precision.
摘要:
An ion microbeam apparatus includes a power supply (14) for a lens (5a) for fine adjustment in addition to a power supply (9) for a lens (5b) for rough adjustment. The power supply (14) for the fine adjustment lens (5a) is supplied with a potential that controls the beam so that it assumes an optimum diameter, responsive to signals from an ion beam detector (12) and a beam deflector (8).
摘要:
A liquid metal ion source according to the present invention has a needle electrode (1) whose fore end is disposed at a position speced from a reservoir (3') for holding a source material (2), and is provided with means (12,13,13') for freely varying the distance from the reservoir (3') to the fore end of the needle electrode (1). This distance can therefore be optimized to give more stable operation under a wider range of conditions.
摘要:
An EHD ion source according to this invention has an extractor (4) and a control electrode (11). The extractor (4) is disposed below a tip (2) and functions to apply an electric field to a substance (3) to-be-ionized wetting a pointed end of the tip (2), so as to derive ions from the pointed tip end. The control electrode (11) is disposed in the vicinity of the pointed end of the tip (2) and functions to apply an electric field to the substance (3) to-be-ionized in its molten state so as to supply the pointed tip end with the substance (3) to-be-ionized in a suitable amount. As a result, a great ion current (5) which is substantially proportional to an extracting voltage (6) can be derived from the pointed tip end.