Results 211 to 220 of about 5,051 (266)

Production of new thermoluminescent mini-dosimeters

Physics in Medicine and Biology, 2000
A method of producing CaSO4:Dy thermoluminescent mini-dosimeters was reported in 1986 by B W Wessels for determination of the in vivo absorbed dose in radioimmunotherapy, a field in which absorbed dose gradients are important. These dosimeters, which undergo dissolution when used in a liquid environment, showed a sensitivity loss of up to 30% after 4 ...
S, Martin, A, Lisbona, J, Richard, S, Morteau, B, Denizot, M, Bardiès   +5 more
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Beryllium Oxide As a Thermoluminescent Dosimeter

Health Physics, 1969
Abstract : The following dosimetric properties were observed in sintered BeO disks and powder: high thermal sensitivity and wide dynamic range, little energy dependence at low x-ray energies, low fast and thermal neutron thermoluminescence response and good stability at room temperature.
E, Tochilin, N, Goldstein, W G, Miller
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Thermoluminescent Dosimeter Reading System

Review of Scientific Instruments, 1963
Two instruments have been developed for measuring the thermoluminescence of LiF. The ``clinical reader,'' suitable for routine clinical use, is simple and convenient to use. It has a standard deviation of from 1 to 5% and its components cost approximately $500. The ``research reader'' is more versatile and produces glow curves. Both readers use a 35-mg
G. N. Kenney, J. R. Cameron, D. Zimmerman   +2 more
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Thermoluminescent Dosimeters for High-dose Applications

Health Physics, 1973
Abstract CaF2: Mn, LiF(TLD-700), and Li2B4O7: Mn in the forms of powders, chips and Teflon discs have been investigated for possible application in dosimetry at a bremsstrahlung generator delivering exposures up to 4 × 104 R in pulses of approximetly 10−7 sec duration. The 60Co response per roentgen was investigated over the range 103-106 R.
S G, Gorbics, F H, Attix, K, Kerris
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Thermoluminescence: A Simple Clinical Dosimeter

Australasian Radiology, 1967
SUMMARYThe minimum specifications applicable to an “ideal” dosimetry system are outlined briefly and an intercomparison of present dosimetry systems is tabulated. The phenomenon of thermoluminescence and its application to dosimetry are sketched prior to some discussion of various thermoluminescence materials and observational techniques.
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Acceptance Testing of Thermoluminescent Dosimeter Holders

Health Physics, 2018
Abstract The U.S. Navy uses the Harshaw 8840/8841 dosimetric (DT‐702/PD) system, which employs LiF:Mg,Cu,P thermoluminescent dosimeters (TLDs), developed and produced by Thermo Fisher Scientific (TFS). The dosimeter consists of four LiF:Mg,Cu,P elements, mounted in Teflon® on an aluminum card and placed in a plastic holder.
Alexander, Romanyukha, Matthew D, Grypp, Thad J, Sharp, John N, DiRito, Martin E, Nelson, Stanley T, Mavrogianis, Jeancarlo, Torres, Luis A, Benevides   +7 more
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An automated thermoluminescence dosimeter reader

The International Journal of Applied Radiation and Isotopes, 1971
Abstract The use of all the commercially available thermoluminescent dosimetric readers is time consuming, because they are to be manually operated. Thus when thermoluminescence dosimeters are to be used on a larger scale, some form of automation is desirable.
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Production of LiF:Ti thermoluminescence dosimeter material

The International Journal of Applied Radiation and Isotopes, 1985
Abstract Titanium (Ti) doped LiF:Ti thermoluminescent crystals were prepared and their dosimetric properties were studied. They showed different thermoluminescence sensitivies with increasing amounts of Ti dopings, reaching maximum for 400 ppm in LiF. In the glow curves of all samples, two peaks at 140°C and 210°C were observed.
A, Aypar, H, Demirtaş
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Correct handling of thermoluminescent LiF: Teflon dosimeters

The British Journal of Radiology, 1974
A recent paper in the British Journal of Radiology (Hasman and Groothedde, 1973) described some difficulties encountered with the use of LiF:Teflon dosimeters. It was observed that the dosimeters tended to lose radiation sensitivity and to discolour or darken with repeated use. The sensitivity also changed with storage.
T E, Blackman, T F, Johns, H E, Preston, E W, Mason, T O, Marshall, K B, Shaw   +5 more
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[Thermoluminescence Slab Dosimeter].

Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics, 2014
In 1953 F. Daniels et al. used the property of thermoluminescence in dosimetry for the first time. Since then, numerous TLD have been developed. 2D TLD was investigated for the first time in 1972 by P Broadhead. However, due to excessive fading, difficulties with handling and the time required for measurements, development stalled. At the current time,
Kiyomitsu, Shinsho, Yusuke, Koba, Satoshi, Tamatsu, Noboru, Sakurai, Genichiro, Wakabayashi, Kazusige, Fukuda   +5 more
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