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Borate Phosphors for Radiation Dosimetery
Published in S. K. Omanwar, R. P. Sonekar, N. S. Bajaj, Borate Phosphors, 2022
A radiation dosimeter is a device or system that measures either directly or indirectly, the quantity of radiation exposure, KERMA, absorbed dose or equivalent dose, or their time derivatives (rates), or related quantities of ionizing radiation. A dosimeter along with its reader is referred to as a dosimetry system.
D
Published in Philip A. Laplante, Comprehensive Dictionary of Electrical Engineering, 2018
dose to clear the amount of exposure energy required to just clear the resist in a large clear area for a given process. dosimeter an instrument used for measuring or evaluating the absorbed dose of radiation. It may depend on the measurement of ionization for its operation or may simply involve the darkening of a piece of photographic film ("film badge"). dot pitch the center-to-center distance between adjacent green phosphor dots of the red, green, blue triad in a color display. dot-matrix printer a printer that produces readable characters by imprinting a large number of very small dots. double bridge a Wheatstone bridge modification designed to increase the precision of
Radiation
Published in Ronald Scott, of Industrial Hygiene, 2018
A dosimeter is a device worn by workers who may be exposed to radiation. One type of dosimeter, called a thermoluminescence detector (TLD), contains a chip of lithium fluoride. Radiation elevates electrons in the atoms of the chip to higher energy positions that are stable enough to remain there for an extended time. The dosimeter is read by placing it in a device that heats the chip, causing the electrons to return to their “ground state” or normal low-energy position. As they do so they emit light, which is read by the measuring device.
ELF-MF occupational exposure in die-casting and electroplating workers in Korea
Published in International Journal of Occupational Safety and Ergonomics, 2020
Rajitha Kawshalya Mailan Arachchige Don, Joon-Sig Jung, Yun-Jin Lee, Seung-Cheol Hong
An EMDEX Lite (Enertech, USA) dosimeter optimized for personal and long-term magnetic field exposure monitoring was used to monitor 24-h personal exposure. The typical measurement accuracy was ±2–4% in the frequency band of 40–1000 Hz with an actual measurement range of 0.01–70 µT and the sample rate was set at 4 s. All dosimeters were calibrated twice before and right after use. Calibration was done by placing dosimeters at the same surface and values were recorded to check their accuracy. The recorded value during calibration was the same before and after the assessment. Measurement units were converted to tesla according to the international system of units (SI).