SU792098A1 - Optical investigation cuvette for interferometer - Google Patents

Description

one

The invention relates to the field of technical physics, namely to optical devices for the study of anomalous dispersion.

 There are known cuvettes for optical measurements in the interferometer, containing a metal body, two plane-parallel windows at the ends of the body, a TlJ heater.

A disadvantage of the known cell is the difficulty of tuning and reduction, the aperture of the interferometer.

The closest technical solution to this invention is a cell for optical studies in the jj interferometer, comprising a metal housing with a heater disposed in the middle of the housing, two flat parallel airtight windows at the ends of the housing and placed between the JJQ heater and refrigerator windows

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The disadvantage of the known cuvette is the limited possibility of its use in the interferometer at the same time as the working cuvette and as the comparison cuvette, since with a large temperature gradient near the windows of the test substance pairs are uniformly evenly distributed along JQ

cross section in its heated zone, which eliminates the interference of light beams. The use of this cell in the interferometer significantly reduces the luminosity of the interferometer and complicates its adjustment.

The purpose of the invention is to increase the luminosity of the interferometer — while simplifying the tuning.

To accomplish this goal, two diametrically opposed longitudinal grooves perpendicular to the windows are made on the inner surface of the metal casing;

FIG. 1 shows a diagram of the device; in fig. 2, 3 - cuvette sections,

Claims (2)

A heater 2 is placed in the middle part of the metal case 1. Refrigerators 3 and 4 are located on the case between the heater and the hermetic and windows 5. And 6. On the inner surface of the case 1 there are longitudinal grooves 7 and 8 in which a plane-parallel plate 9 is placed, to which the metal semi cylinder 10 is hermetically attached. A nozzle 11 is also attached to the middle of the body. The device operates as follows. In that half of the housing 1, there is no half-cylinder 10, the test substance is placed through the pipe 11. The cuvee is evacuated and inert gas is injected (10 - 60 mm Hg), then the heater 2 and refrigerators 3 and 4 cool the windows 5 and 6. A plane-parallel plate 9 and a metal semi-cylinder 10 which is chemically connected to it, touch the windows 5 and 6, since they have the same length as the housing 1. The pressure of the inert gas is relatively large (10–60 mm Hg. .) and near the windows there is a large temperature gradient, which prevents the ingress of steam. of the test substance into the adjacent half of the cell, which is the comparison cell. A cell made according to the invention allows to increase the luminosity and simplify the setting of the interferometer, since it eliminates the use of semi-transparent mirrors in the interferometer. DETAILED DESCRIPTION OF THE INVENTION A cuvette for optical research in an interferometer, comprising a metal body with a heater placed in the middle part of the body, two plane-parallel sealed windows at the ends of the body and placed between the heater and the refrigerator windows, in order to increase the aperture speed of the interferometer while simplifying settings, on the inner surface of the metal casing, two diametrically opposed longitudinal grooves, perpendicular to the windows, are made in these grooves meschena plane-parallel with the metal plate hermetically fixed thereto metallic half-cylinder, wherein the plate length and a half-cylinder ravia distance between the windows. Sources of information taken into account in the ri expertise 1.Timoshenko N.I., Kholodov E.P.N. Yamkov A.L. The cuvette to the interferometer ITR-1 for measurements in a wide range of temperatures and pressures. - Journal of Physical Chemistry, 1971, 11, p. 29332934. 2.Zaydel A.N., Ostrovska G.V. and Ostrovsky Yu.I. Technique and practice of spectroscopy. M., Science, 1976, p. 351, fig., 1з.12А (prototype).