A dosimeter is a measuring instrument designed to measure the amount of ionizing radiation that a person or object has absorbed over a specific period of time. This device is commonly used by individuals working in professional fields where they may be exposed to increased levels of radiation, such as in nuclear energy or medical imaging technology.
There are various types of dosimeters, including passive and active dosimeters. Passive dosimeters are easy to handle and do not require a power source, as they are made from materials such as aluminum oxide or lithium fluoride that react to radiation and record a permanent trace that can be read later. Active dosimeters, on the other hand, require a power source and can measure and display the radiation dose in real-time.
There are also different types of dosimeters designed for different purposes. Some dosimeters only measure the radiation of a specific type, such as gamma radiation or X-ray radiation, while others can measure a wider range of radiation patterns. Dosimeters can also be configured to measure the radiation dose at different parts of the body to ensure that the whole body is not exposed to too much radiation.
Dosimeters are used in many applications to monitor and control exposure to ionizing radiation to ensure the safety of people and the environment. Additionally, dosimeters are also used for scientific purposes, to study the effects of radiation on materials and to measure radiation exposure during spaceflight.