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Related to Dosimetry: radiation dosimetry, thermoluminescence dosimetry


Measurement of the power, energy, irradiance, or radiant exposure of high-energy, ionizing radiation. Also known as radiation dosimetry.



an area of applied physics that studies the physical values that characterize the effect of ionizing radiation on natural objects (animate and inanimate)—in particular, radiation doses—and the methods and instruments for measuring these amounts.

The development of dosimetry was spurred initially by the need to protect man against ionizing radiation; biological effects that appeared after the irradiation of man were noted soon after the discovery of X rays. The need arose for a quantitative evaluation of the degree of radiation danger. The basic quantitative criterion was taken to be the exposure dose, measured in roentgens and determinable in terms of the amount of atmospheric ionization. The work of Soviet scientists P. N. Lukirskii, V. M. Dukel’skii, D. N. Nasledov, K. K. Aglintsev, and I. V. Poroikov was important in the development of roentgenometry.

With the discovery of radium it was learned that the beta and gamma radiations of radioactive substances bring about biological effects similar to those caused by X-radiation. A danger arose in the isolation, treatment, and use of radioactive compounds in that radioactive substances could get inside the body. Methods were developed for measuring the activity of radioactive sources (the number of decays per second). These methods are the basis of radiometry.

The development and construction of nuclear reactors and charged particle accelerators, the development of nuclear power, and the mass production of radioactive isotopes have led to a great diversity of types of ionizing radiation and to the development of diverse dosimetric instruments (dosimeters).

Research on the biological effects of ionizing radiation on the cellular and molecular levels has brought about the development of microdosimetry, which examines the transfer of radiation energy to the microstructures of matter.


References in periodicals archive ?
1 Industrial users and National Measurement Institute (NMI) transfer dosimetry services rely on these two manufacturers for their alanine dosimeters.
210[degrees]C glow peak is about 4 times more intense compared to the dosimetry peak of the well known TLD phosphor LiF-TLD 100.
In addition, each patient prior to therapy received ZEVALIN labeled with a tracer dose of indium-111, which allows the physician using dosimetry to predict the biodistribution of the yttrium-labeled radiotherapeutic agent.
After an introductory chapter, Chapters 2 to 6 will cover basic theory and practical aspects, personal dosimetry, space dosimetry, medical dosimetry and solid-state physics and optical properties.
In making this move, Virginia becomes the 35th state with no mandatory personnel dosimetry requirement for operators of the NOMAD.
They begin by reviewing the 40-year history of the practice, then discuss such examples as the GSF voxel computational phantom family, the ADELAIDE teenage female voxel computational phantom, the University of Florida pediatric phantom series, Chinese voxel computational phantoms, the Vanderbilt University reference adult and pediatric phantom series, and physical phantoms for experimental radiation dosimetry.
The thermal column provides a large-area and uniform beam of thermal neutrons for dosimetry and neutron standards work.
Sections 1-5 address issues relating to 1) biological mechanisms, 2) acute effects, 3) chronic effects, 4) dosimetry, and 5) exposure assessment.
The wide dose and energy range, along with the ability to operate in pulsed fields, makes the DIS dosimeters well-suited for many radiation dosimetry applications.
Aerosols handbook; measurement, dosimetry, and health effects, 2d ed.
of Cartagena, Spain) has written this textbook on high frequency electromagnetic dosimetry for researchers, engineers and students who are concerned with the effects of electromagnetic radiation on human health.
The ratio of lung cancer risk coefficients in the LSS and in groups of underground miners is close to the value suggested by the latest International Commission on Radiological Protection (ICRP 1994) model of lung dosimetry (Birchall and James 1994; Little 2002b).