Apparatus for determining the specific weight of selected region

Details Apparatus for determining the specific weight of selected region Apparatus for determining the specific weight of selected region

1978-12-08

1981-04-14

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250511, G01N 2300, G21F 504

Patent

active

042622018

ABSTRACT:
An apparatus for determining the specific weight of selected regions of microscopic small, for instance of a size between about 5 .mu.m to 1 mm, approximately plane parallel samples by means of a substantially punctual radiation source for .gamma. or X-rays, containing a first collimator, an observation device provided with incident light illumination, a sample stage having a sample carrier and a standard for the specific weight being movable perpendicular to the axis of the beam of the punctual radiation source, and a radiation measuring device for determination the absorption of radiation. There is provided a second collimator having a smaller opening than the first collimator, and as radiation measuring device there is provided a measuring probe and a count-rate measuring device for a predetermined wavelength.

REFERENCES:
patent: 2932391 (1960-04-01), Broekhuysen
patent: 3767931 (1973-10-01), Williams
patent: 3955086 (1976-05-01), Tsujii et al.

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