KR100261746B1 - A land mine - Google Patents

Abstract

PURPOSE: A movable detecting device is provided to minimize damage of person and equipment, to reduce influence of topography, geology and atmosphere and to exactly discriminate explosive and mine. CONSTITUTION: A proton beam of 0.75MeV is generated and a radio frequency quadrupole proton accelerator(10) is combined with a power device(24), a cooling device(20), and an ionizing source(32). A proton beam transfer system(12) transferring 1.75MeV proton beam is connected with the high frequency quadrupole proton accelerator(10). At an end of the proton beam transfer system, a carbon target(14) discharging a 9.17 MeV gamma ray is fixed by reacting with the proton beam. A movable detection system(16) is fixed for detecting a secondary gamma ray(38) of 9.17MeV generated from resonance reaction with mine and explosive(34) containing nitric compound from underground with a primary gamma ray(36) of 9.17 MeV irradiated from carbon target(14). A signal obtained from the detection system(16) is analyzed in a center control room(22).

Description

Landmine and explosive detection device using photonuclear resonance reaction of gamma ray and nitrogen nucleus generated by proton accelerator

The present invention relates to an explosive detection device such as a land mine using a photonuclear resonance reaction of a gamma ray and a nitrogen nucleus generated using a proton accelerator, and more specifically, a photonuclear resonance reaction of a gamma ray and a nitrogen nucleus ( ¹⁴ N) generated using a proton accelerator. The present invention relates to a detection device for detecting the presence of landmines and buried explosives.

Conventional mine detection device using X-ray or infrared detector is a device that informs only the shape of metal, wood, and plastic, so it is not clear to explode precisely, and when using neutron, the cross section of nuclear reaction with nitrogen ( ¹⁴ N) is several tens of mbarn. Since the response rate is very low, the measurement time is long, and the error rate due to noise is large. Therefore, a problem in accuracy and reliability often occurs because it is only (1 barn = 10 ^-24 ㎠).

In addition, since the metal detector determines the presence or absence of metal in an electronic manner, the device itself is simple and is widely used as a portable detector. However, there is a disadvantage in that wrong signals are frequently detected by general metals not containing explosives. In particular, problems such as non-metal explosives cannot be detected and often cause large accidents.

In the case of mechanical equipment, that is, minesweeping rollers, plows, purlins, and linear charges deal with landmines by direct contact, causing direct damage to the equipment and serious damage to life and equipment when in contact with high-performance bombs. There has always been a problem.

The present invention has been made to solve the above problems, minimizes the damage of life and equipment, is less affected by terrain, geology and weather, and provides a detection technology that can accurately determine land mines and explosives at high speed The purpose is to make mobile detectors applied.

In order to achieve the above object, when a few MeV-class high-energy proton beams are projected on a carbon ( ¹³ C) target, the 9.17MeV gamma rays spread out in a conical shape at an angle of about 80.7 ° ± 1.0 ° with respect to the direction of the proton beam. Penetrating the surface of the earth and causing a photo-nuclear reaction reaction with high-density nitrogen ( ¹⁴ N), which is essential in explosives such as landmines, and then emitting a second gamma ray again, at this time By using a detector arranged according to the present invention, the presence and location of landmines and explosives can be determined by measuring and comparing the spatial concentration distribution of emitted secondary gamma rays, that is, nitrogen.

1 is a conceptual diagram of the mine and explosives detection principle of the present invention.

2 is a conceptual diagram of the fixed explosive detection principle of the present invention.

3 is a conceptual diagram of a mobile landmine and explosive detection device of the present invention.

<Explanation of symbols for main parts of drawing>

10: proton accelerator 12: proton beam transport system

(14): carbon ( ¹³ C) target (16): detection system

(18): alarm device (20): cooling device

(22): central control room (24): power supply

26: pigment sprayer 28: vehicle

(30): Global Positioning System (GPS)

(32): ion source (34): mines and explosives

(36): primary gamma ray (38): secondary gamma ray

Referring to the configuration and operation of the present invention in detail based on the accompanying drawings as follows.

1 is a conceptual diagram of the mine and explosive detection principle of the present invention, Figure 2 is a conceptual diagram of the fixed explosive detection principle of the present invention, Figure 3 shows a conceptual diagram of the mobile mine and explosive detection device of the present invention.

Generates a 1.75 MeV proton beam and transports the radio frequency quadrupole proton accelerator 10 coupled with the power supply unit 24, the cooling unit 20, and the ion source 32, and the 1.75 MeV proton beam. A carbon ( ¹³ C) target that connects a proton beam transport system 12 to a high frequency quadrupole proton accelerator 10 and emits 9.17 MeV gamma radiation in response to a 1.75 MeV proton beam at the end of the proton beam transport system 12. (14) and resonance reactions with mines and explosives (34) containing nitrogen compounds from the ground irradiated with 9.17 MeV primary gamma rays (36) from the carbon ( ¹³ C) targets (14). The detection system 16 capable of detecting the generated 9.17MeV secondary gamma ray 38 is mounted in front of the vehicle 28, and the center of the signal is determined by analyzing the signal obtained from the detection system 16. After confirming the mine location and the band position device 30 connected to the control room 22 It has been to be composed of a fluorescent dye sprayer 26 to display a land mine location.

The explosive detection principle is as shown in FIG.

When a few MeV class high energy proton beams are projected onto the carbon ( ¹³ C) target 14, the 9.17MeV primary gamma rays 36 spread out in a cone at an angle of about 80.7 ° ± 1.0 ° with respect to the direction of the proton beam. The first gamma ray 36 penetrates the surface and causes a photo-nuclear reaction reaction and nuclei of dense nitrogen ( ¹⁴ N), which are essentially contained in the landmines and explosives 34 that are buried. The second gamma ray 38 is emitted. At this time, the presence and absence of the mine and explosives 34 are determined by measuring and comparing the spatial distribution of the emitted second gamma ray 38, that is, nitrogen, using the detector 16 arranged according to the measurement angle. .

The detector 16 is composed of a BGO for detecting gamma rays emitted from a mine and a spectrum analyzer for spectralizing the number of gamma rays measured through a signal received by the BGO.

The gamma ray spectrum displayed on the spectrum analyzer screen is analyzed using a computer to determine whether landmines and explosives are judged.

At this time, in order to maximize the detection efficiency of gamma rays, gamma ray detection is installed at the lower part of the structure such as the arms of the fork lane so that the front of the BGO is perpendicular to the ground. use.

The arms of the BGO-mounted forkrain are automatically controlled by a computer in the central control room so that the BGO is placed in the position where the gamma rays can be detected the most depending on the position of the carbon target.

The above detection technology can be applied to the existing fixed detection technology to detect landmines and explosives (34) buried in the ground.

Conventional detection methods include a carbon ( ¹³ C) target 14 and a cargo containing an explosive, the detector being in a straight line, and the position of the detector is always located behind the cargo as shown in FIG. In this case, the carbon ¹³ C target and detection system are fixed and only the cargo moves up and down in position and rotates 360 °. However, this detection technology is not suitable for detecting landmines and explosives buried in the ground.

The present invention is a modification of the conventional detection technique as follows to be suitable for detecting landmines and explosives (34) buried in the ground.

First, since the positions of the mines and explosives 34 are fixed, the detection system 16 may be located at any point on the ground regardless of the front or rear of the detection system, as in the fixed detection technology. It is.

Second, at the same place by adjusting the vertical and horizontal direction of the primary gamma ray 36 emitted from the carbon ¹³ C target 14 by the proton beam transport system 12 adopting the scanning method of the bending magnet. It is possible to detect a large area at once by moving the detection position.

The proton beam transport system 12 is composed of a semi-collective group and a bending magnet, and can change the up, down, left, and right directions of the proton beam by using the bending magnet.

The semi-collecting group and the bending magnet constituting the proton beam transport system 12 are formed by winding a copper coil, and a magnetic field is formed in the semi-collecting group and the bending magnet by sending a current through the coil. In the case of spreading the proton beam, the bending magnet serves to change the direction of the proton beam.

Between the proton accelerator and the carbon target, a beam moving tube made of stainless steel is installed, and coils of different types are wound around the moving tube to form a band collector and a bending magnet.

The amount of current flowing through the semi-collectors and flexural magnets is automatically controlled by the computer depending on the formation of the ground and the position of the carbon target.

In other words, in order to distribute the proton beam generated from the proton accelerator evenly to the carbon target to emit a lot of gamma rays, the proton beam is made into a desired shape through a semi-collecting group, and then the bending magnet is used to advance the proton beam according to the position of the carbon target. The route is changed to find mines and explosives buried in a large area in one place.

That is, the alignment and progression paths are connected from the proton accelerator to the collimator, the bending magnet and the carbon target.

Third, the detection efficiency can be improved by maximizing the detection efficiency by using the mobile detection system 16 instead of the fixed detection system.

Fourth, in order to facilitate the removal of the mines and explosives 34 regardless of day or night, the fluorescent dye sprayer 26 was used to mark the positions of the explosives.

In the conventional land mine and explosives 34 detector, the location of the land mines and explosives 34 uses a high-speed water sprayer. In this case, it is difficult to work a bit, and it may damage the detection apparatus due to dust and dirt from working. .

Fifth, a band positioning device (GPS) 30 capable of receiving a detection position from a satellite, rather than a tomography method used in a fixed detection technique, to create a location map of a mine and an explosive 34 buried in a large area. The detection method of was used.

The band position device 30 analyzes the signal returned by firing radio waves to a military satellite located in the earth's atmosphere when a mine is detected by installing a dish antenna on a vehicle on which a mine and explosive detection device is mounted. It is a device for judgment and is connected to a computer in the central control room.

That is, the device has the same function as the GPS used for the road marking function currently mounted in a general passenger car.

The data analysis equipment also includes a neural network analysis function and a band position device (GPS) 30 capable of receiving detection positions from satellites.

Sixth, the vehicle 28 is equipped with a device applying the above detection techniques in order to increase maneuverability.

In the present invention, since the reaction area between the secondary gamma ray 38 and the nitrogen nucleus is larger than the reaction area between the neutron and the nitrogen nucleus, the measurement time is short and the error rate is small, so that the explosives can be more accurately identified. It is an all-weather detection device that is less affected by terrain, geology, and weather due to the high permeability of the primary gamma ray 36. The detection efficiency is 90% or more, and the vehicle can be mounted by miniaturizing the gamma ray generator. For example, it has the advantage of detecting a large area of about 5-8km in length.

The high frequency quadrupole generating the 1.75 MeV proton beam is perpendicular to the proton accelerator 10, the carbon ¹³ C target 14 for generating the primary gamma ray 34, and the secondary gamma ray 36 emitted. Proton beam transport system 12, which detects the secondary gamma ray 38, which detects by moving the measurement position in the same place by adjusting the horizontal direction, safety of life and equipment Receiving location from the satellite and the automatic network sprayer 26 for accurate detection of explosives, day and night, and the location of explosives. It is composed of a data analysis equipment having a function to image the location map of the mines and explosives (34) using a band position device (GPS) 30 that can be.

3 is a conceptual diagram of a mobile detection device of the present invention, in which a proton beam from a proton accelerator 10 mounted on a vehicle 28 is transferred to a carbon ¹³ C target 14 using a proton beam transport system 12. Let it enter. At this time, the generated 9.17MeV primary gamma ray 36 is shot in the ground, and the secondary gamma ray 38 generated from the landmines and explosives 34, etc., which are buried, is detected using the detection system 16.

The signal obtained from the detection system 16 is analyzed in the central control room 22 to determine the presence and location of the mines and explosives 34. Subsequently, detection is performed while changing the emission direction of the primary gamma ray 36 by using the scanning function of the proton beam transport system, and the detection result and the GPS 30 are used to mine and explosives. The location map of 34 is image-processed. When the presence of the explosives is confirmed, the automatic alarm device 18 is activated to protect the life and equipment to prevent the vehicle 28 from moving forward.

The movable fluorescent dye sprayer 26 accurately displays the positions of the mines and explosives 34 from side to side, regardless of day or night, by the information transmitted from the central control room 22. In addition, as an auxiliary device of the proton accelerator 10, a cooling device 20 and a power supply device 24 are mounted on a vehicle.

That is, the flexure magnet adjusts the proton beam propagation path, generates gamma rays by the carbon target, the gamma ray detector BGO detects gamma rays emitted from the optimal position shift and mines, the spectrum analyzer spectra the signals of the BGO, and the computer It determines whether there is a mine or not, and the band position device determines the current position when the mine is checked.

The detector detects the mine, the computer determines the mine, the band positioner determines the current position, and the computer maps the mine's location again and displays the position on the ground with a fluorescent dye sprayer. To be removed.

Therefore, the present invention has a shorter measurement time because the nuclear resonance reaction area between the gamma ray and the nitrogen nucleus is larger than the reaction area between the neutron and the nitrogen nucleus. It is an invention that can detect a large area in a short time at low cost because the detection efficiency is more than 90% as the all-weather detection device less affected by geology and weather, and the vehicle can be mounted by miniaturizing the gamma ray generator.

Claims (4)

Generates a 1.75 MeV proton beam and transports the radio frequency quadrupole proton accelerator 10 coupled with the power supply unit 24, the cooling unit 20, and the ion source 32, and the 1.75 MeV proton beam. A carbon ( ¹³ C) target which connects a proton beam transport system 12 to a high frequency quadrupole proton accelerator 10 and reacts with a 1.75 MeV proton beam at the end of the proton beam transport system 12 to emit 9.17 MeV gamma rays. (14) and resonance reactions with mines and explosives (34) containing nitrogen compounds from the ground irradiated with 9.17 MeV primary gamma rays (36) from the carbon ( ¹³ C) targets (14). The detection system 16 capable of detecting the generated 9.17MeV secondary gamma ray 38 is mounted in front of the vehicle 28, and the center of the signal is determined by analyzing the signal obtained from the detection system 16. After confirming the mine location and the band position device 30 connected to the control room 22 A fluorescent dye sprayer 26 mines and explosives detection systems occurred with the proton accelerator, characterized in that been using that gamma rays and nuclei of nitrogen gwanghaek 0 people reaction consists of that shown by the mine location. The method of claim 1; The proton beam transport system 12 is composed of a semi-collective group and a bending magnet, and uses a bending magnet to change the up, down, left, and right directions of the proton beam. Mines and explosives detection device using photonuclear resonance reaction. The method of claim 1; The data analysis equipment of the central control room 22 includes gamma rays generated using a proton accelerator, which includes a neural network analysis function and a band position device (GPS) 30 capable of receiving detection positions from satellites. Mines and explosives detection device using the photonuclear resonance reaction of nitrogen and nitrogen. The method of claim 1; Protons are connected to the central control room 22 in front of the vehicle 28, controlled by the central control room 22 is moved to the left and right, and equipped with a fluorescent pigment sprayer 26 capable of injecting fluorescent pigment A mine and explosive detection device using a photonuclear resonance reaction of gamma rays and nitrogen nuclei generated using an accelerator.