KR19990085466A - Landmine and explosive detection technology and device using photonuclear resonance reaction of gamma ray and nitrogen nucleus generated by proton accelerator - Google Patents

Abstract

The present invention relates to a technique for detecting explosives such as landmines using photonuclear resonance reactions of gamma rays and nitrogen nuclei generated using proton accelerators, and more specifically, to nuclei of gamma rays and nitrogen nuclei ( ¹⁴ N) generated using proton accelerators. The present invention relates to a technology and a mobile detection device for detecting the presence of landmines and buried explosives using a resonance reaction.

A radio frequency quadrupole proton accelerator (10) coupled with a power supply (24), a cooling device (20), and an ion source (32) generating a 1.75 MeV proton beam and transporting 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 from the carbon ( ¹³ C) target 14, 9.17 MeV primary gamma rays 36 were irradiated from the ground with resonances with mines and explosives 34 containing nitrogen compounds from the ground. 9.17 Produced using a proton accelerator composed of a mobile detection system 16 capable of detecting a MeV secondary gamma ray 38 and a central control room 22 for analyzing signals from the detection system 16. Photonuclear Resonance Reaction One is mine and explosives detection technologies and devices.

Description

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

The present invention relates to a technique for detecting explosives such as landmines using photonuclear resonance reactions of gamma rays and nitrogen nuclei generated using proton accelerators, and more specifically, to nuclei of gamma rays and nitrogen nuclei ( ¹⁴ N) generated using proton accelerators. The present invention relates to a technology and a mobile detection device for detecting the presence of landmines and buried explosives using a resonance reaction.

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 unclear to accurately identify explosives. When using neutron, the cross-sectional area of nuclear reaction with nitrogen ( ¹⁴ N) Because it is only mbarn (1barn = 10 ^-24 cm ² ), the response rate is very low, so the measurement time is long and the error rate due to noise is large, which often causes problems in accuracy and reliability.

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, non-metallic explosives cannot be detected, causing problems such as frequent accidents.

In the case of mechanical equipment, such as mine removal rollers, plows, purlins, and linear charges, the mines are treated by direct contact, which directly damages the equipment and seriously damages life and equipment when it comes into 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 onto a carbon ( ¹³ C) target, the 9.17 MeV 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 present mine and explosive detection principle

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

3 is a conceptual view of the present invention mobile land mine and explosives detection device

<Explanation of symbols for the main parts of the drawings>

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 explosives detection principle of the present invention,

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

3 is a conceptual diagram illustrating a mobile landmine and explosive detection device according to the present invention.

A radio frequency quadrupole proton accelerator (10) coupled with a power supply (24), a cooling device (20), and an ion source (32) generating a 1.75 MeV proton beam and transporting 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 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) resulting from 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) target (14). 9.17 MeV It is comprised with the portable detection system 16 which can detect the 2nd gamma ray 38, and the central control room 22 which analyzes the signal obtained from the said detection system 16. As shown in FIG.

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 9.17 MeV 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 of the earth and contains high density nitrogen (essentially contained in landmines and explosives 34). After the nucleus and photo-nuclear resonance reaction (Photo-nuclear Resonance Reaction) is generated, the second gamma ray 38 is emitted again. At this time, the presence and absence of the mine and the explosive 34 are determined by comparing and comparing the spatial distribution of the emitted second gamma ray 38, that is, the nitrogen, using the mobile detector 16 arranged according to the measurement angle. do.

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 explosives, the detector being in line, and the position of the detector is always at the rear of the cargo, as can be seen in FIG. In this case, carbon ( The target and detector are fixed and only the cargo position moves up and down 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, the carbon (proton beam transport system 12) adopting the scanning method of the bending magnet ) By adjusting the vertical and horizontal directions of the first gamma ray 36 emitted from the target 14, a wide area can be detected at once by moving the detection position at the same place.

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.

Third, it is possible to improve the detection efficiency by maximizing the detection efficiency by using the mobile detection system 16 rather than 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 mine and explosives (34) detector, the location of the mines and explosives (34) uses a high-speed water sprayer. In this case, it is difficult to work at night, and it may damage the detection apparatus due to dust and dirt from working. .

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

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 second 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 miniaturization of 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 has carbon for generating the proton accelerator 10 and the primary gamma ray 34. ) The proton beam transport system 12, the secondary gamma ray 38, which makes it possible to detect and move the measurement position at the same place by adjusting the vertical horizontal direction of the target 14, the emitted secondary gamma ray 36. Detector (16) capable of detecting), automatic alarm device (18) for safety of life and equipment, mobile fluorescent dye spray (26) to accurately display the location of explosives regardless of day and night, more accurate Data with neural network analysis for discrimination and the ability to image location maps of mines and explosives 34 using a GPS (GPS) 30 capable of receiving detection positions from satellites. It is composed of analysis equipment.

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 subtracted into the ground, and the second gamma ray 38 generated from the landmines and explosives 34, which are buried, is detected using the mobile 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 first gamma ray 36 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 mobile 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.

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% and the vehicle can be mounted by miniaturization of the gamma ray generator as it is less affected by geology and weather.

Claims (4)

A radio frequency quadrupole proton accelerator (10) coupled with a power supply (24), a cooling device (20), and an ion source (32) generating a 1.75 MeV proton beam and transporting 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 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) resulting from 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) target (14). A proton comprising a mobile detection system 16 capable of detecting a 9.17MeV secondary gamma ray 38, and a central control room 22 for analyzing signals from the detection system 16; Of gamma rays and nitrogen nuclei generated using accelerators Mines and explosives detection technology and device using photonuclear resonance reaction. 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 technology using resonance reaction and its device. 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. Landmine and explosive detection technology and device using photonuclear resonance reaction of nitrogen and nitrogen nucleus. 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 Landmine and explosive detection technology and device using photonuclear resonance reaction of gamma ray and nitrogen nucleus generated by accelerator.