What is OSL Dosimetry?
OSL, Advanced Technology for Radiation Measurement
RadiationSafety.com utilizes OSL dosimetry in its radiation detection badges. OSL is optically stimulated luminescence; dosimetry measures ionizing radiation dosages. It allows for measuring exposure to radioactive isotopes over a specific time. Many agree that OSL dosimetry is a better alternative to thermoluminescent dosimeter (TLD) technology.
OSL dosimeter badges are the industry standard used by the government, hospitals, labs, and companies worldwide. An OSL dosimeter is a passive form of radiation detection and requires optical stimulation to function. These small and discrete personal radiation badges detect X-rays, gamma radiation, and beta particles.
OSL dosimeters are materials that trap electrons from radioactive isotopes in their defective crystalline structure. Some utilize aluminum oxide (AI203) to absorb and release radioactive energy to precisely measure the radiation dose received. The OSL dosimeters store the electrons until it is released through stimulation. While heat is used to stimulate TLD dosimeters, light stimulates the elements within the OSL dosimeters. The OSL dosimeter then releases the energy stored in the dosimeter as the emitted light is measured. Since they utilize passive technology, the laboratory can read the OSL badge multiple times without significantly fading. OSL dosimeters provide a very high degree of sensitivity and can give an accurate reading as low as 1 mrem for gamma-ray particles and x-ray particles. In addition, OSL dosimeters measure the amount of scatter ionizing radiation for workers. OSL radiation detection badges can also be positioned as an area monitor in the room. Having an area monitor measures the radiation in the environment over a specified period of time.
Basics of OSL Technology
An OSL dosimeter should be worn outside your clothing, between your neck and abdomen, where the most radiation is likely to be absorbed. Often, the detection badges are attached to lapels or collars of lab coats. Scientists, technicians, researchers, and medical professionals are encouraged to wear them whenever they come in contact with or close to a radiation source, especially over prolonged periods of time. It is especially prudent for pregnant women working in these environments to use and wear radiation detection badges like those from RadiationSafety.com, especially because OSL dosimeters are more sensitive than comparable TLD dosimeters.
Our OSL radiation detection x-ray badges are shockproof, water resistant, and unaffected by heat. The radiation monitors are durable and simple to use. With OSL technology, badges are re-readable. TLD dosimeters do not have the capability of being read multiple times. A second reading of the radiation dose from an OSL dosimeter may only decrease by as small as one percent difference compared to its first reading. All radiation doses are stored so that if needed, it can be reread years later.