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Radiation comes in a range of forms - from gamma to the well-known X-Ray radiation. Learn more Ionizing radiation takes a few forms: Alpha, beta, and neutron particles, and gamma and X-rays. X-rays are similar to gamma radiation, with the primary difference being that they originate from the electron cloud. This is. Measured? Radioactive substances are those that are unstable in nature. Naturally occurring uranium, thorium, radium, and radon emit radiation to reach a more stable condition. This process is called radioactive decay. By measuring the type of radiation emitted, the specific energy level or levels of radiation and the rate of. Electrical Services Since continuity of service is of extreme importance from the standpoint of reactor accidents, a loop type power hookup is to be used. With this type of supply, power is obtained from essentially two distinct sources. Some diesel operated pumps are also provided for plant emergency shutdown. This loop.
The radiation one typically encounters is one of four types: Neutron radiation is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial radioactive sources. Join or Renew Members Only Login. What Types of Radiation Are There?
This method is known as radiometric dating. This means that alpha particles from ordinary alpha decay do not penetrate the outer layers of dead skin cells and cause no damage to the live tissues below. Back to Living for the future index.
Alpha Radiation Alpha radiation is a heavy, very short-range particle and is actually an ejected helium nucleus. Some characteristics of alpha radiation are: Most alpha radiation is not able to penetrate human skin. Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed through open wounds. A variety of instruments has been designed to measure alpha radiation. Special training in the use of these instruments is essential for making accurate measurements.
A thin-window Geiger-Mueller GM probe can detect the presence of alpha radiation. Instruments cannot detect alpha radiation through even a thin layer of water, dust, paper, or other material, because alpha radiation is not penetrating. Alpha radiation travels only a short distance a few inches in air, but is not an external hazard.
Types of Nuclear Radiation
Alpha radiation is not able to penetrate clothing. Examples of some alpha emitters: Beta Radiation Beta radiation is a light, short-range particle and is actually an ejected electron.
Some characteristics of beta radiation are: Beta radiation may travel several feet in air and is moderately penetrating. Beta radiation can penetrate human skin to the "germinal layer," where new skin cells are produced. If high levels of beta-emitting contaminants are allowed to remain on the skin for a prolonged period of time, they may cause skin injury.
Beta-emitting contaminants may be harmful if deposited internally.
Most beta emitters can be detected with a survey instrument and a thin-window GM probe e. Some beta emitters, however, produce very low-energy, poorly penetrating radiation that may be difficult or impossible to detect. Examples of these difficult-to-detect beta emitters are hydrogen-3 tritiumcarbon, and sulfur Clothing provides some protection against beta radiation.
Examples of some pure beta emitters: Gamma and X Radiation Gamma radiation and x rays are highly penetrating electromagnetic radiation. Some characteristics of these radiations are: Gamma radiation or x rays are able to travel many feet in air and many inches in human tissue. They readily penetrate most materials and are sometimes called "penetrating" radiation.
X rays are like gamma rays.
Medical radiography and Medical radiation scientist. In addition, high-energy high-speed neutrons have the ability to directly ionize atoms. Radiation can be absorbed by substances in its path.
X rays, too, are penetrating radiation. Sealed radioactive sources and machines that emit gamma radiation and x rays respectively constitute mainly an external hazard to humans.
Gamma radiation and x rays are electromagnetic radiation like visible light, radiowaves, and ultraviolet light. These electromagnetic radiations differ only in the amount of energy they have.
Gamma rays and x rays are the most energetic of these.
Dense materials are needed for shielding from gamma radiation. Clothing provides little shielding from penetrating radiation, but will prevent contamination of the skin by gamma-emitting radioactive materials. Gamma radiation is easily detected by survey meters with a sodium iodide detector probe.
References and Recommended Reading
Examples of some gamma emitters: The information posted on this web page is intended as general reference information only. Specific facts and circumstances may affect the applicability of concepts, materials, and information described herein.
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