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Author : H. L. Gibbs
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development of a Portable Radon Detector written by H. L. Gibbs and published by . This book was released on 1973 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. L. Gibbs
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.F/5 ( download)
Download or read book Development of a Portable Radon Detector written by H. L. Gibbs and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harold L. Gibbs
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (253 download)
Download or read book Development of a Portable Radon Detector written by Harold L. Gibbs and published by . This book was released on 1973 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. W. Allen
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development of a Portable Radon Detection System written by J. W. Allen and published by . This book was released on 1976 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Development of a Portable Radon Detection System. [For Monitoring Radon-222 in Soil Gas and Ground Water for Uranium Prospecting]. PDF Online Free](https://books.google.com/books/content/images/frontcover/xFWWwgEACAAJ?fife=w200-h370)
Download or read book Development of a Portable Radon Detection System. [For Monitoring Radon-222 in Soil Gas and Ground Water for Uranium Prospecting]. written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The presence of radon-222 in soil gas and ground water can indicate the existence of nearby uranium deposits even when heavy overburdens completely absorb the associated gamma radiation. Techniques to detect and measure radon have evolved during the past several years to the point where radon prospecting is routinely employed in a number of countries. A program to develop and field test a prototype system for measuring radon from soil gas and water is described. A prototype system employing a flow through scintillation detector was designed and constructed, utilizing standard commercial components, to provide a fieldworthy unit for testing the system concepts. Laboratory and preliminary field tests of this unit indicate that it can detect anomalous radon levels of less than 10 picoCuries per liter (pCi/l) in soil gas and ground water.
Author : Kar-Yee Leung
Publisher : Open Dissertation Press
ISBN 13 : 9781361320013
Total Pages : pages
Book Rating : 4.3/5 (2 download)
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-Yee Leung and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment" by Kar-yee, Leung, 梁嘉怡, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The goal of the Daya Bay Reactor Neutrino Experiment is to determine the last unknown neutrino mixing angle θ13, in sin22θ13 to sensitivity better than 0.01 at 90% confidential level in three years of running. In order to reach the goal, background from natural radiation should be controlled less than 50 Hz, accordingly radon, which is a naturally-occurring radioactive gas, is one of the factors need to be monitored. A High-sensitivity and High-reliability Hong Kong (H3) radon monitoring system is developed to support the slow control system of the experiment. It achieves the sensitivity requirement and fulfills the data acquisition specification by using an enlarged sample chamber, an improved electronic and a designed software, in addition to the dehumidifier system for long term use. Four final products of the radon detector were well calibrated and tested before application; the sensitivities of counted progenies Po-218 and Po-214 are 3.65 0.37 x10-2 cpm/Bq-m3 (C.F.is 27.42.7 Bq/m3/cpm) and 3.94 0.40 x10-2 cpm/Bq-m3 (C.F. is 25.42.5 Bq/m3/cpm). Its performance is the highest among the same type of commercial available products. This radon monitoring system has been successfully taking data as the background measurement of the experiment for more than half a year, and will continue to provide useful information for the following several years. From the results, the radon levels in the air in Experimental Halls and in the water of water systems were higher than expected, but still at the acceptable levels. Further works have to be done to control them at preferred levels. DOI: 10.5353/th_b5053415 Subjects: Radon measures
Author : Kar-Yee Leung
Publisher : Open Dissertation Press
ISBN 13 : 9781361320006
Total Pages : pages
Book Rating : 4.3/5 (2 download)
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-Yee Leung and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment" by Kar-yee, Leung, 梁嘉怡, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The goal of the Daya Bay Reactor Neutrino Experiment is to determine the last unknown neutrino mixing angle θ13, in sin22θ13 to sensitivity better than 0.01 at 90% confidential level in three years of running. In order to reach the goal, background from natural radiation should be controlled less than 50 Hz, accordingly radon, which is a naturally-occurring radioactive gas, is one of the factors need to be monitored. A High-sensitivity and High-reliability Hong Kong (H3) radon monitoring system is developed to support the slow control system of the experiment. It achieves the sensitivity requirement and fulfills the data acquisition specification by using an enlarged sample chamber, an improved electronic and a designed software, in addition to the dehumidifier system for long term use. Four final products of the radon detector were well calibrated and tested before application; the sensitivities of counted progenies Po-218 and Po-214 are 3.65 0.37 x10-2 cpm/Bq-m3 (C.F.is 27.42.7 Bq/m3/cpm) and 3.94 0.40 x10-2 cpm/Bq-m3 (C.F. is 25.42.5 Bq/m3/cpm). Its performance is the highest among the same type of commercial available products. This radon monitoring system has been successfully taking data as the background measurement of the experiment for more than half a year, and will continue to provide useful information for the following several years. From the results, the radon levels in the air in Experimental Halls and in the water of water systems were higher than expected, but still at the acceptable levels. Further works have to be done to control them at preferred levels. DOI: 10.5353/th_b5053415 Subjects: Radon measures
Author : Aamer Bashir
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (144 download)
Download or read book Conceptual Study of a Calibrated Radon Source and a Portable Radon Detector written by Aamer Bashir and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate assessment of radon concentration in indoor air can determine whether the environment poses a lung cancer risk. A radon calibration system is being developed and studied that dispenses custom and reproducible activities of radon from a radon generator source into a vessel for sensor testing and calibration. There are two methods by which radon can be dispensed into the vessel. The flow-through method allows for radon to be pumped at a constant activity and flow rate through the chamber, with concentrations ranging from 1.7 pCi/l to 34 pCi/l. The vacuum method injects a predefined concentration of radon into the chamber, starting from 85 pCi/l. Both methods have their advantages and disadvantages. To accurately detect alpha particles emitted by radon and its progeny, a portable alpha particle detector using a silicon PIN photodiode is being developed. The current lab system setup using a $10 Hamamatsu photodiode yields a 1.82% channel resolution using polonium-210 as an alpha source. A detector with sufficient energy resolution is needed to resolve individual alpha peaks in an energy spectrum produced by various radionuclides present in air. Background radiation experiments have shown that the detector exhibits an excellent signal-to-noise ratio. Lab counting experiments have shown the experimental activity is in reasonable agreement with the calculated radiation incident on the photodiode. Current circuit development includes a charge sensitive preamplifier, and the remaining goal is to add a pulse counting chain to complete the circuit and the portable alpha particle counter. In the future, it is planned to extensively calibrate the alpha particle detector with the radon calibration system.
Author : Kar-yee Leung (M. Phil.)
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (857 download)
Download or read book Development of the Customized Radon Detector and Studies of the Radon Background Onsite for the Daya Bay Reactor Neutrino Experiment written by Kar-yee Leung (M. Phil.) and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sarah Grimley
Publisher :
ISBN 13 :
Total Pages : 103 pages
Book Rating : 4.:/5 (428 download)
Download or read book Development of a Multichamber Passive Radon Detector written by Sarah Grimley and published by . This book was released on 1992 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Saeed A Durrani
Publisher : World Scientific
ISBN 13 : 9814498920
Total Pages : 410 pages
Book Rating : 4.8/5 (144 download)
Download or read book Radon Measurements By Etched Track Detectors - Applications In Radiation Protection, Earth Sciences written by Saeed A Durrani and published by World Scientific. This book was released on 1997-06-09 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure to radon gas, which is present in the environment naturally, constitutes over half the radiation dose received by the general public annually. At present, the most widely used method of measuring radon concentration levels throughout the world, both in dwellings and in the field, is by etched track detectors — also known as Solid State Nuclear Detectors (SSNTDs). Although this is not only the most widely used method but is also the simplest and the cheapest, yet there is at present no book available on the market globally, devoted exclusively or largely to the methodology of, and dealing with the results obtained by, the SSNTD technique. The present book fills this important gap in the coverage of radon measurements. Individual chapters of the book are contributed by some of the most prominent and active research workers in the world in the SSNTD discipline as well as in the field of radon measurements. A detailed breakdown of the contents of the book is shown below together with the name(s) of the author(s) of each chapter.
Author : Richard I. Miller
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (659 download)
Download or read book Development of a Rapid Response Radon Monitor written by Richard I. Miller and published by . This book was released on 1979 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 吳致平
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Development of Real-time Radon Detector and Deployment in Seismic Station in Taiwan written by 吳致平 and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.:/5 (42 download)
Download or read book Report of Investigations written by and published by . This book was released on 1973 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carlos Antonio De Leers Costa-Ribeiro
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.:/5 (16 download)
Download or read book Design and Development of a Detector to Measure Integrated Radon Concentrations written by Carlos Antonio De Leers Costa-Ribeiro and published by . This book was released on 1973 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : 1072 pages
Book Rating : 4.F/5 ( download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kim Scullion
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (65 download)
Download or read book Development of an Automatic Passive Radon Detector for Use in Workplaces written by Kim Scullion and published by . This book was released on 2001 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
