Identification method of fire arms as per mark of striker on case

FIELD: weapons and ammunition.

SUBSTANCE: method consists in application of coating to gun striker surface, which provides penetration of set of microelements into surface of case capsule during firing, determination and comparison of information signals the first one of which represents response of capsule surface after its contact with striker, and the second one from surface of case capsule, which is shot from unknown gun. As individual marks used for identification with the help of method of radioactive indicators there used are at least three radioactive isotopes chosen from the group containing 69Co, 55Fe, 210Pb, 63Ni1 and 90Sr, and thickness of coating on surface of gun striker is 3.0 to 5.0 mcm.

EFFECT: improving reliability of analysis result.

 

The invention relates to the field of design and manufacture of firearms and can be used to identify small arms manufactured in small batches.

The known method of identification of the barrel rifled weapons (US, 4175346, 1979). According to the method proposed to apply on the inner surface of the barrel rifled weapons additional marking elements, leaving traces on the pool, which can be identified as individual characteristics of the barrel rifled weapons. When identifying compare the results of the analysis of bullets and the result of the analysis of bullets, clearly released from a specific trunk.

The disadvantage of this method should recognize the uselessness of it to identify weapons on the sleeve.

There is also known a method of labeling a barrel rifle (RU, patent 2148769, 2000), including the application of the inner surface of the barrel cover, ensuring the implementation of the set of chemical elements in the lateral surface of the bullet during its passage through the barrel during the shot, allowing by chemical analysis of the surface of the bullet, and surfaces in contact with the bullet after firing, to determine the qualitative and quantitative composition of the established elements and, therefore, the trunk from which a shot was fired.

Dunn is I design unsuitable for the identification of barrels of weapons, because there is currently not known how precise application on the internal surface coatings, in addition, in this embodiment, the weapon cannot be identified by empty sleeve.

The technical problem to be solved by the present invention is to provide identification of weapons, preferably produced in small batches.

The technical result in the implementation of the design is to provide for the identification of firearms on the spent cartridge using a previously executed marking elements.

To obtain the technical result of the proposed use of the method of identification in the case of firearms, using the method of radioactive indicators, characterized by coating on the surface of the firing pin of the weapon, ensure the implementation of the set of trace elements into the surface of the primer of the cartridge case during firing, and is applied to the surface of brisk coating thickness of from 3.0 to 5.0 μm, the individual labels are suitable for identification using the method of radioactive indicators, use at least three of the radioactive isotope selected from the group consisting of69With,55Fe210Pb63Ni1and90Sr, shot control shot, ODA is by dividing the information signal, representing the response surface of the cap after its contact with the striker, the identification information signal from the surface of the cap sleeve, shot from an unknown weapon, the comparison of the two information signals and judgement.

These radioactive isotopes have half-life, sustainable identification of their presence for at least 5 years. The total amount of radiation from deposited isotopes exceed the natural background radiation of the city not more than 10-12%, i.e. completely safe for the user of the weapon.

The method of radioactive indicators is the most simple and instrumental secured from the known methods of activation analysis.

When identifying rifled firearms using the developed method pre-determine the response of radiotracers from the sleeve (cap), used when making a shot from a weapon, using the result as a control. Usually this is done when shooting weapons. Sleeve, obviously used to make shot from the weapon, is subjected to analysis by the method of radioactive indicators and put the results into the appropriate database (factory and MIA). When determining weapon cf is univelt the results of the analysis cartridge with a known database characteristics previously shot shells.

Modern equipment used in the method of radioactive indicators, allows us to determine the individual contribution to the total radioactivity of each of the used radioactive isotopes. Knowing the half-life of each of the used radioactive isotopes, calculated by the well-known relations (see, for example, Berdonosov S. radiotracers in chemical research M., "Chemistry", 1999) the value of radioactivity at the date of analysis sleeves, subject identification.

Use the specified thickness of the sprayed layer due to the following experimental data.

From experience in the use of firearms small arms found that this range of thickness of coating on the surface of brisk enough to obtain reliable results using the analysis method of radioactive indicators in the implementation of at least 600 shots. The greater the thickness of the coat is impractical due to the receipt of the fragile layer. The application of smaller thicknesses may lead to inaccurate results.

The introduction of restrictions on the use of the method used, at least three of the radioactive isotope selected from the group due to the following factors.

1. Currently known FPIC who would vacuum deposition, including local, on the surface, including metal, various metal compositions containing two or more components.

2. Also known electroplating methods local application on the metal surface metal coatings containing impurities.

3. These coating methods allow to obtain a metal coating with different content of chemical elements (metals) in them.

4. The resulting composition of metals with radioactive isotopes provide a significant number of combinations of radioactive isotopes, each of which allows to unambiguously characterize the composition of metals and, therefore, an instance of the rifle, the cartridge chamber and the barrel of which this composition is applied.

5. The standard equipment of the method of radioactive indicators provide ample opportunities for the implementation of the proposed method.

Therefore, the unit of firearms can be determined by used the sleeve in the analysis of the surface of the capsule.

In a preferred embodiment, the identification in the process of manufacturing of firearms, preferably at prisciliano it, at least one sleeve is placed in a file (or database) of the manufacturer, as well as internal organs on the L.

Hereinafter the invention will be illustrated in the examples of its implementation.

1. On the surface brisk small machine "Tis" by the method of vacuum deposition using vacuum post struck composition 3 metals containing these radioactive isotopes of cobalt, iron and Nickel, with a thickness of 5.0 μm. The composition applied composition depends on the composition of the target, from which the produced spray, as well as from the target temperature. Practically the number of combinations of the three metals indefinitely. The coating obtained was fixed on the surface of the striker by the method of heating. Upon delivery to the customer instance small machine Tis made control shooting. The surface of the cap after the shot was analyzed using the method of radioactive indicators. The results made in the filing Cabinet. Further, upon detection of the sleeve, presumably remaining after the shot of the small machine "Tis", the surface of the cap were examined by the method of radioactive indicators. The received information signal is compared with the data files. It is possible to establish used to shot the instance of small machine "Tis".

2. On the surface striker silent gun BOP (P) method of electroplating was applied composition 3 metals with a thickness of 3.0 μm, the content of asuu iron, Nickel and strontium containing the appropriate radiotracers. The composition applied composition depends on the composition of the electrolyte, which made the application, and the process conditions. Practically the number of combinations of the three metals indefinitely. The coating obtained was fixed on the surface of the striker by the method of heating. Upon delivery to the customer instance of the silent gun BOP (P) produced control shooting. The surface of the cap after the shot was analyzed using the method of radioactive indicators. The results made in the filing Cabinet. Further, upon detection of the sleeve, presumably remaining after the shot of the silent gun BOP (P), the surface of the cap were examined by the method of radioactive indicators. The received information signal is compared with the data files. It is possible to establish used to shot the instance of the silent gun BOP (P).

The use of such design allows to clearly identify the cartridge firearms.

The method of identification of firearms on the trail from the firing pin on the sleeve, characterized in that the applied coating on the surface of the firing pin of the weapon, ensure the implementation of the set of trace elements into the surface of the primer of the cartridge case during firing, and applied to the surface of the wizard coating thickness of from 3.0 to 5.0 μm, at the same time as individual labels, suitable for identification using the method of radioactive indicators, use at least three of the radioactive isotope selected from the group consisting of69With,55Fe210Pb63Ni1and90Sr, then shoot a test shot, define an information signal representing the response surface of the cap after its contact with the striker, define an information signal from the surface of the cap sleeve, shot from an unknown weapon, compare two information signal and make a judgment.



 

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FIELD: weapons and ammunition.

SUBSTANCE: identification system is characterised by available marking element on striker surface, and mixture consisting at least of three radioactive isotopes chosen from the group containing 69Co, 55Fe, 210Pb, 63Ni and 90Sr.

EFFECT: unique specific identification of item of mass gun as per striker mark on case.

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EFFECT: unique specific identification of item of mass gun as per striker mark on case.

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