Lawrence Livermore National Laboratorys Book Of Minimum Detectable Activity For Direct Measurement Of Internally Deposited Radionuclides In Radiation Workers
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Total Pages | : 48 |
Release | : 2012 |
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Download Lawrence Livermore National Laboratory's Book of Minimum Detectable Activity for Direct Measurement of Internally Deposited Radionuclides in Radiation Workers - CY2011 Book in PDF, Epub and Kindle
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Total Pages | : 28 |
Release | : 2008 |
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Download Lawrence Livermore National Laboratory?s Book of Minimum Detectable Activity for Direct Measurement of Internally Deposited Radionuclides in Radiation Workers Book in PDF, Epub and Kindle
Lawrence Livermore National Laboratory maintains an in vivo measurement program designed to identify and evaluate the activity of radionuclides deposited in the body. Two types of systems are primarily used for the routine monitoring of radiation workers, the lung counting system and the scanning bed whole body counting system. The lung counting system is comprised of two Canberra ACTII detector sets. Each ACTII set contains two planar germanium detectors with carbon composite end windows optimized to measure low energy photon emitting radionuclides. The ACTII detectors are placed on the upper torso over the lungs for the direct measurement of internally deposited radionuclides in the lungs that emit low energy photons. A correction for the thickness of the chest wall is applied to the efficiency. Because the thickness of the chest wall is a key factor in the measurement of low energy photon emitting radionuclides in the lung, the minimum detectable activity is a function of the chest wall thickness. The scanning bed whole body counting system is comprised of a thin air mattress on top of a carbon fiber bed that slowly scans over four high purity germanium detectors. The scanning system is designed to minimize variations in detected activity due to radionuclide distribution in the body. The scanning bed detection system is typically used for the measurement of internally deposited radionuclides that emit photons above 100 to 200 keV. MDAs have been generated for radionuclides that provide energies above 80 keV since the lowest calibration energy for the system is approximately 86 keV. The following charts and table provide best determination of minimum detectable activity using human subjects as controls for the background contributions. A wide variety of radionuclides are used throughout the laboratory and the following pages represent several of the radionuclides that have been encountered at the Whole Body and Spectroscopy Laboratories within Hazards Control.
Author | : International Atomic Energy Agency |
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Total Pages | : 124 |
Release | : 1996 |
Genre | : Medical |
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Download Direct Methods for Measuring Radionuclides in the Human Body Book in PDF, Epub and Kindle
Provides information on the establishment and operation of facilities for the measurement of body activity by direct methods. Emphasis is placed on measurements of body radioactivity made in programmes of internal dosimetry for occupationally exposed persons, or in investigations following incidents.
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Total Pages | : 1684 |
Release | : 1988 |
Genre | : Power resources |
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Download Energy Research Abstracts Book in PDF, Epub and Kindle
Author | : National Committee on Radiation Protection and Measurements (U.S.) |
Publisher | : |
Total Pages | : 114 |
Release | : 1959 |
Genre | : Radioactivity |
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Download Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and in Water for Occupational Exposure Book in PDF, Epub and Kindle
Author | : National Council on Radiation Protection and Measurements NCRP. |
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Total Pages | : |
Release | : 1985 |
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Download General Concepts for the Dosimetry of Internally Deposited Radionuclides Book in PDF, Epub and Kindle
Author | : National Council on Radiation Protection and Measurements |
Publisher | : |
Total Pages | : 116 |
Release | : 1963 |
Genre | : Radioactivity |
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Download Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and in Water for Occupational Exposure Book in PDF, Epub and Kindle
Author | : ICRP, |
Publisher | : SAGE Publications Limited |
Total Pages | : 0 |
Release | : 2016-04-18 |
Genre | : Science |
ISBN | : 9781473944404 |
Download ICRP Publication 130 Book in PDF, Epub and Kindle
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Total Pages | : 196 |
Release | : 1958 |
Genre | : Radioactivity |
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Download Los Alamos Handbook of Radiation Monitoring Book in PDF, Epub and Kindle
Author | : United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) |
Publisher | : United Nations |
Total Pages | : 512 |
Release | : 2017-04-25 |
Genre | : Political Science |
ISBN | : 9210600029 |
Download Sources, Effects and Risks of Ionizing Radiation, United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2016 Report Book in PDF, Epub and Kindle
This report assesses the levels and effects of exposure to ionizing radiation. Scientific findings underpin radiation risk evaluation and international protection standards. This report comprises a report with two underpinning scientific annexes. The first annex recapitulates and clarifies the philosophy of science as well as the scientific knowledge for attributing observed health effects in individuals and populations to radiation exposure, and distinguishes between that and inferring risk to individuals and populations from an exposure. The second annex reviews the latest thinking and approaches to quantifying the uncertainties in assessments of risk from radiation exposure, and illustrates these approaches with application to examples that are highly pertinent to radiation protection.