The power of cell phone jammer is different

The full name of       cell phone jammer
That the shielding effectiveness of shielding materials and other properties such as mechanical properties, heat resistance and radiation shielding properties of materials is the contradiction between the need to address the key issues presented several common with a strong radioactive radiation generation mechanism and characteristics, details the protection of these types of radiation shielding materials and shielding principles. All these rays of protective shielding materials research has become a very important and urgent issue, but also made great achievements. In this paper, these results are briefly described, and proposed areas of future research and application of the main directions.The company has manufactured a series of     cell phone jammer      . Key words Introduction reactor nuclear reactor radiation shielding material is the core of nuclear energy systems, nuclear fission (or fusion) to generate a variety of different levels of radiation rays such as neutron, γ-rays, secondary γ-rays and other charged particles and high-energy rays. Depends on the shielding of radiation protection and radiation shielding properties of the material structure of the optimal design, obviously, should be considered when selecting materials of basic nuclear properties of neutron and radiation is weakening performance. Heavy metals such as lead, tungsten, uranium and decay after the iron, and nickel are all less effective γ-ray body, there are very good for fast neutron moderation effect. And as boron, graphite, hydrogen-rich compounds such as water, heavy water and polymer materials is the weakening or absorption of neutrons is more effective, these materials and their composites have been widely used in various reactor and shielding systems play an important role.The basic working principle of     cell phone jammer       is almost the same.  Preparation of radiation protection materials research field of scientific research to become one of the most important issues, civil defense and has great significance. Shielding composite materials at home and abroad have conducted extensive research, many shielding materials have been widely used, in which several main types of shielding concrete shielding composite materials, boron steel, lead, boron polyethylene mouth, Al-B4C composites PVC-PE composite materials. With a variety of nuclear energy and the development of nuclear reactors, and other shielding materials for shielding systems have become increasingly demanding, many of the existing shielding materials has been difficult to meet their requirements, mainly in the shielding effectiveness of shielding materials, and other properties such as mechanical properties, heat resistance, radiation hardness and other difficult to balance. The power of cell phone jammer is different and so the shielding radius will be the different. Set in a heap reactor shielding material to protect personnel and equipment from external radiation injury reactor materials. When the reactor operation, the nuclear fission reaction to generate a large number of neutrons and γ rays, but also the release of fission product decay α, β particles and γ rays. α and β particle range is very short and very easy to be absorbed by air or other objects, the operator generally does not pose a threat; neutron and γ-ray has strong penetrating power, they require in order to stop the reactor four weeks to set the protection shield. Need to use fast neutron shielding material composed of light elements, γ-ray shielding elements need to use heavy materials, so the heap outside the shield elements are often used concurrently with the severity of the joint structure. Shielding materials commonly used are: special heavy concrete, boron paste layer, heavy metals and so on. Different cell phone jammer will act on the specific frequency channel. Special re-mixed concrete from the cement filler, such as iron ore, barite, and iron posed, because it contains heavy elements iron and light elements in crystal water (hydrogen), so the neutron and γ-ray has a strong absorptive capacity.