The method of obtaining the isotope carbon-14

 

(57) Abstract:

Usage: in nuclear engineering, in particular in industry and scientific research to obtain the isotope carbon-14, as the most widely used indicator. The inventive method of producing isotope carbon-14 includes packaging targets the protective sheath and the subsequent irradiation of the neutron flux. As an initial matter, the irradiation of the neutron flux. As the source of a target substance using liquid-phase connection of nitric oxide, for example, chetyrehokisi nitrogen (N2O4) that allows you to generate compounds of the isotope carbon-14 directly from the zone of irradiation. 1 C.p. f-crystals, 1 table. 3 other

The present invention relates to the field of nuclear technology and can find application in industry and research.

Primarily the invention is intended to obtain isotope products, in particular, the isotope carbon-14, as one of the most widely used indicators.

A method of obtaining carbon-14 by the irradiation of a solution of ammonium nitrate in the channel graphite reactor (proceedings of the International conference on the peaceful uses of and the th radiation resistance of a solution of ammonium nitrate.

The closest way to the same destination to the claimed invention by a combination of traits is a method for isotope carbon-14 by wrapping the target, which is a tablet Be3N2in the aluminum container and the subsequent irradiation of the target material in a neutron flux (radiochemistry and nuclear chemistry processes, edited by A. N. Mukina, Leningrad, Koshimizu, 1960, 675 S.)

For reasons that impede the achievement of specified following technical result when using the known method, taken as a prototype, is that in the known method for separation of the isotope carbon-14, you must remove the target material from the irradiation zone, and this leads to a "contamination" of the compounds of carbon-14 in their separation from the target material adverse isotopes produced during irradiation. In addition, accumulation of the isotope carbon-14 in number, allowing efficient separation without N2need exposure for a long period of time (from 3 to 5 years), which makes carbon-14 is one of the most expensive isotopes.

The task, which is aimed by the invention is the generation of the isotope carbon-14 high preparation is 14.

This technical result in the implementation of the invention is achieved in that in the known method of producing isotope carbon-14, including packaging targets the protective sheath and further irradiation in a neutron flux, the feature is that as the source of a target substance using liquid-phase compounds oxides of nitrogen, for example, chetyrehokisi nitrogen (N2O4.

The reaction of interaction in the process of irradiation of nitrogen target is the formation of carbon dioxide-14, which is spontaneously removed due to incompatibility with the target material that allows you to generate a connection directly from the zone of irradiation.

When conducting the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, not the tool is installed the same destination, characterized by signs, identical with all the essential features of the claimed device set forth in the claims.

Therefore, the claimed invention according to the applicant meets the criteria of "novelty."

the t to the expert in the obvious way from the prior art, as the applicant has not identified the impact provided the essential features of the claimed invention transformations to achieve a technical result.

This allows the applicant to conclude that the claimed technical solution meets the condition of "inventive step".

Information confirming the ability of the invention to provide the above technical result is presented in the table reflect the results of experiments to obtain the isotope carbon-14 prototype and the proposed methods.

Example No. 1. By the way, taken as a prototype, a target representing nitride powder of beryllium Be3N2pressed in tablets, Packed in an aluminum container, which was placed in the reactor core. After irradiation in a neutron flux container was removed, kept, and then melted. Target nitride, beryllium was dissolved in 65% sulfuric acid with the addition of 30% hydrogen peroxide, and the mixture of gases emitted by a stream of nitrogen was passed through manookin oven at a temperature of 750oC, and then a solution of sodium hydroxide gas mixture is absorbed. From a solution of sodium hydroxide was besieged carbon is neither, representing, according to the invention, the liquid-phase connection - cityregional nitrogen. The container was placed in a water-cooled channel of the reactor core. The venting tube container was reported with three posledovatelnostei absorbers containing a solution of sodium hydroxide, purified from carbonates. The irradiation container target was carried out for 26 hours After that, the container was removed from the active zone, removed the target and measured its volume. Then the sodium hydroxide solution was decanted from the bubblers, United and besieged Ugarov-14 in the form of barium carbonate. The precipitate was washed, dried, weighed and determined the amount of carbon-14 by measuring the intensity of beta radiation.

Example No. 3. In an aluminum container with a volume of 14 liters, fitted with two tubes to fill the target and selection of the gas phase, put 1500 g camerahouse nitrogen and lowered the container with the target channel industrial reactor 220 h, selecting the gas phase in the stainless steel tank every 24 h exposure. Stainless capacity of the gas phase was passed through a solution of sodium hydroxide. After irradiation container with the target removed from the channel, measured by the number of remaining target material, and Rast is ivali, defining then the amount of carbon-14 radiometric method.

Thus, the above data confirm that the implementation of the use of the claimed device the following cumulative conditions:

the tool embodying the claimed invention in its implementation, is intended for use in industry, primarily in nuclear;

for the inventive method, it is described by an independent clause sets out the claims, confirmed the possibility of its implementation using the steps described in the application of tools and techniques;

the method of obtaining the isotope carbon-14, embodied in the claimed invention, it is able to achieve perceived by the applicant of the technical result, namely, a significant reduction in the cost of obtaining the isotope carbon-14 preparative high quality by generating its compounds directly from the zone of irradiation.

Therefore, the claimed invention meets the criterion of "industrial applicability".

1. The method of obtaining the isotope carbon-14, including packaging targets in a protective shell, the irradiation of the target material in the flow of the Idov nitrogen.

2. The method according to p. 1, characterized in that as the source of the target material used chetyrehokisi nitrogen (N2O4).

 

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The invention relates to the field of radiochemistry and can be used in the production of the radionuclide carbon-14, which is widely used for the synthesis of labeled compounds

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