Tuesday, June 20, 2017
About Radiation Detectors via www.google.com

What are about Radiation Detectors? ~ Because we can not see, radiant odor or taste, based on means for the presence of ionizing radiation to appear. Is the moving radiation energy referred to in the form of particles or waves of photon energy rays. Some daily examples are microwaves used to cook food, radio waves for radio and television, light and X-rays used in medicine.

Radiation is a natural and spontaneous process that emanates from the unstable atoms of an element or emit excess energy in the form of particles or waves. These emissions are collectively reported in ionizing radiation. Ionization is a particular feature of the radiation generated when radioactive elements deteriorate. These are high-energy radiation compared to materials in interaction can remove electrons from atoms in the material. As a radiation detector?


The basic principle behind this tool is the use of a special material that burns or flicks when the radiation interacts with it. The light output from the scintillation process is reflected through clear windows, which interacts with the device called the photomultiplier tube. The first part of the photomultiplier tube of a different special material called a photocopier did. The electron photocathode is created when the light hits the surface. These electrons are then pulled, a number of plate dictation calls are generated by a high positive voltage. When the electrons hit the photocathode in the first run, many electrons for each original electron produced to reach the surface. This electron group is then pulled into the next junction, which is more "electron proliferation." The pulse is then detected and displayed by the instrument.

Gas-filled detector:

This device operates on the principle that since the radiation passes through the air or the ionization of molecules in the air is carried out a certain gas. When a high voltage between two portions of the gas filled space is placed, the positive ions should be drawn to the negative side of the detector (the cathode) and the free electrons go to the positive (anode). By placing an extremely sensitive current measuring device between the cathode and the anode wires, the measured small current and appears as a character. The higher the radiation entering the camera, the latter that is displayed by the instrument. There are many types of gas filled detectors, but the two most common are the ionization chamber for measuring large amounts of radiation used, and the Geiger-Muller or GM-detector is used to measure very low levels of radiation.


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