Abstract: A spectrum analysis method is provided in which a composition distribution of a sample in the depth direction is analyzed based on an energy spectrum of scattered particles scattered at the sample by irradiation with ion beams, the sample being composed of a single layer or multiple layers. In the spectrum analysis, the thickness of an object layer of the sample is obtained by the steps of measuring an energy spectrum of scattered particles scattered in a scattering angle (specific scattering angle) direction at which an energy spectrum corresponding to the object layer independently appears, extracting an independent energy spectrum of the object layer which independently appears in the measured energy spectrum, and calculating the thickness of the object layer based on a spectrum area surrounded by the waveform of the independent energy spectrum thus extracted.

Abstract: A sample analyzer such as a Rutherford backscattering spectrometer for detecting ions that are elastically scattered by a sample is provided. A spectrum-measuring unit is shifted so that it can be positioned in accordance with a plurality of the scattering directions of the scattered ions in the sample analyzer. For example, the spectrum-measuring unit is shifted in an arc about the irradiation point of the ion beams along a guide rail. Alternatively, a vacuum container is composed of a fixed container holding the sample therein and a movable container hermitically and slidably connected to the fixed container and provided with detection ports. The movable container slides and thus the detection ports are shifted so that the detection ports can be positioned in accordance with the scattering directions. Accordingly, the detection ports, in turn, detection angles are easily changed, whereby a large sample can be analyzed.

Abstract: A spectrum analysis method is provided in which a composition distribution of a sample in the depth direction is analyzed based on an energy spectrum of scattered particles scattered at the sample by irradiation with ion beams, the sample being composed of a single layer or multiple layers. In the spectrum analysis, the thickness of an object layer of the sample is obtained by the steps of measuring an energy spectrum of scattered particles scattered in a scattering angle (specific scattering angle) direction at which an energy spectrum corresponding to the object layer independently appears, extracting an independent energy spectrum of the object layer which independently appears in the measured energy spectrum, and calculating the thickness of the object layer based on a spectrum area surrounded by the waveform of the independent energy spectrum thus extracted.

Abstract: A sample analyzer such as a Rutherford backscattering spectrometer for detecting ions that are elastically scattered by a sample is provided. A spectrum-measuring unit is shifted so that it can be positioned in accordance with a plurality of the scattering directions of the scattered ions in the sample analyzer. For example, the spectrum-measuring unit is shifted in an arc about the irradiation point of the ion beams along a guide rail. Alternatively, a vacuum container is composed of a fixed container holding the sample therein and a movable container hermitically and slidably connected to the fixed container and provided with detection ports. The movable container slides and thus the detection ports are shifted so that the detection ports can be positioned in accordance with the scattering directions. Accordingly, the detection ports, in turn, detection angles are easily changed, whereby a large sample can be analyzed.

Abstract: A water-soluble acrylic resin which is prepared by neutralizing with a neutralizing agent an acrylic copolymer formed by copolymerizing (a) an alkylene oxide group-containing (meth)acrylate, (b) a cyclic saturated hydrocarbon group-containing (meth)acrylate, (c) a hydroxyl group-containing unsaturated monomer other than the monomer (a), and (d) other unsaturated monomer; a resin composition used for a water-based coating composition and containing, as a vehicle component, the above water-soluble acrylic resin; a water-based coating composition containing, as major components, (A) at Least one resin selected from the group consisting of a water-soluble resin and a water-dispersible resin and (B) a pigment, said pigment (B) being subjected to dispersion treatment; with a water-soluble acrylic resin (C), which is prepared by neutralizing with a neutralizing agent an acrylic copolymer formed by copolymerizing (a) an alkylene oxide group-containing (meth)acrylate, (b) a cyclic saturated hydrocarbon group-containin

Abstract: An ion beam analyzing apparatus wherein a scan image displayed on display means and the profile of an ion beam can be made coincide with each other readily to assure a high operability. Slit members for X and Y directions of an objector collimator are provided for movement to vary the dimensions of slits defined thereby, and dimensions A and B of the slits in the X and Y directions are detected. Dimensions X' and Y' of a spot of an ion beam irradiated upon a specimen on a target are calculated by multiplying the dimensions A and B by reduction ratios fx and fy of quadruple pole magnetic lenses, respectively, and then the dimensions X' and Y' are multiplied by values obtained by division of conditions Cx and Cy of an image apparatus by current scanning widths Sx and Sy of deflecting electrodes to calculate enlarged beam spot diameters X" and Y" respectively. An image having the diameters X" and Y" is displayed on a cathode ray tube so that an operator can visually grasp it.

Abstract: A converged ion beam apparatus wherein a very small beam spot can be formed with a high energy ion beam after passing a reduced route in which a type of the ion beam is classified. The device is incorporated in an apparatus wherein an ion beam from an accelerator is introduced in a spot to a specimen by way of an ion type classifying device, an objective collimator and a beam collector to perform reforming of a surface or an analysis of physical properties and/or composition or the like of a small area of the specimen. The objective collimator is disposed just on the downstream of the accelerator, and an analyzing component for analyzing an ion type and energy of a beam is interposed in a drift space in an object distance between the objective collimator and a quadruple pole magnetic lens. Several components of the apparatus are also improved including the quadruple pole magnetic lens, an objective slit device and a specimen chamber.