Abstract:
An ion microprobe analyzer adapted for use in effecting the solid analysis of a specimen in the depth direction thereof in such a manner that the specimen is scanned by a primary ion beam for etching to derive therefrom information on the specimen such as charged particle beams or electromagnetic waves in an attempt to analyze the surface of the specimen in succession with the progress of the etching, wherein the etching of the specimen is effected by scanning the primary ion beam over an area larger than and inclusive of a region to be analyzed and the information generated from the specimen surface only when the primary ion beam passes through the region to be analyzed which is preset is detected, thereby making free from influences from the side wall of a hole produced on the specimen by the etching to improve the precision of analysis in the depth direction of the specimen.
Abstract:
An ion microprobe analyzer including a detector of secondary particles emitted from a specimen by bombarding a specimen with an ion beam, and means for recording or displaying the relationship between currents of the secondary particles and specific ions. According to this ion microprobe analyzer the influence on the measurement of the work function of a surface of the specimen is eliminated and the measurement of a concentration distribution of an element in a direction toward the depth of the specimen can be measured precisely.
Abstract:
An ion microanalyzer which detects and mass analyzes the secondary ions emitted from a specimen surface when it is scanned with an ion beam, comprising a cathode ray tube the electron beam of which is scanned synchronously with the scanning of the abovementioned ion beam, the intensity of the electron beam being modulated by the directly detected signal of the secondary ions.
Abstract:
An ion source device of the Duoplasmatron type has a current reduction resistor in the filament circuit thereof for reducing the filament current during steady state operation thereof, and a relay adapted to normally short-circuit both terminals of the current reduction resistor, which relay is energized by a current flowing through an intermediate electrode circuit so as to open both of these terminals of the resistor thereby making it possible to reduce the steady state filament current.
Abstract:
An ion micro-analyzer, wherein a finely collimated ion beam is projected onto the surface of a sample to be analyzed, the projected ion beam repeatedly scans the sample surface while, one time in fixed scanning-frequency intervals, a fixed point on the sample surface is bombarded by the ion beam for a constant time, the image of the secondary electrons from the sample surface is projected on the screen of a Braun tube oscilloscope sweeped synchronously with the ion beam and observed by performing intensity modulation of the oscilloscope in correspondence with the amount of the secondary electrons emitted from the sample surface, the fixed position on the sample surface bombarded by the ion beam in the way described above is moved to a position for analysis while observing the brilliant point on the image of secondary electrons which corresponds to the fixed point on the sample bombarded by the ion beam, and then a mass-spectroscopic analysis of the secondary ions emitted from the fixed point on the sample surface is done while the fixed position on the sample desired for analysis is bombarded by the ion beam.