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Radioactive source localization inside pipes using a long-range alpha detector

Chinese Physics C 2013年第8期37卷 50-54页

作者：吴雪梅庹先国李哲刘明哲张金钊董湘龙李平川 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Southwest University of Science and Technology Provincial Key Laboratory of Applied Nuclear Techniques in Geosciences Chengdu University of Technology

Long-range alpha detectors （LRADs） are attracting much attention in the decommissioning of nuclear facilities because of some problems in obtaining source positions on an interior surface during pipe decommissioning. By utilizing the characteristic that LRAD detects alphas by collecting air-driving ions, this article applies a method to localize the radioactive source by ions＇ fluid property. By obtaining the ion travel time and the airspeed distribution in the pipe, the source position can be determined. Thus this method overcomes the ion＇s lack of periodic characteristics. Experimental results indicate that this method can approximately localize the source inside the pipe. The calculation results are in good agreement with the experimental results.

关键词： LRAD source position ion travel time airspeed localization

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Flight Vehicle Performance and Aerodynamic Control

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丛书名： AIAA Education Series

2001年

作者： Frederick O. Smetana

ISBN: (数字)9781600861857

ISBN: (纸本)9781563474637

Flight Vehicle Performance and Aerodynamic Control is designed to serve as a text for either an 11-week or a 16-week course at the sophomore level. It explains typical methods used to estimate aircraft performance, the theoretical basis of these methods, and how various parameters derived from the aircraft geometry can be used to estimate the requirements of control surfaces and the aerodynamic forces required to actuate these surfaces. This book includes time-tested computer programs that perform the analyses in a manner that reduces student error and improves result accuracy. Because the source code is given, users with a FORTRAN compiler can modify the program to suit particular needs. The major advantage of the software is that more realistic problems may be treated and the effects of parametric programs are more accurate than calculators. The programs are available as executables for Windows machines as well as in ASCII source code versions that can be readily compiled and then executed on Unix, Linux, and Macintosh machines, and on mainframes.

关键词： Aerodynamic Performance Aerodynamics Aeronautical Engineering Aeronautics Aerospace Engineering Aerospace Sciences Aircraft Carriers Aircraft Components and Structure Aircraft Conceptual Design Aircraft Design Aircraft Dynamic Modes Aircraft Engines Aircraft Instruments Aircraft Operations Aircraft Operations and Technology Aircraft Performance Aircraft Stability and Control Aircraft Stabilizer Aircraft Wing Components Aircraft Wing Design Aircrafts Airfoil Airfoil Nomenclature airspeed Astrodynamics Astronautics Atmospheric Science Aviation Aviation Authorities and Organizations Aviation Safety Avionics Civil Aviation Combat Aircraft Combustion Chambers Compressors Energy Energy Conversion Energy Economics Energy Forms Energy Forms, Production and Conversion Energy Production Fixed-Wing Aircraft Flight Control Surfaces Flight Dynamics Flight Mechanics Flight Test Flight Training Fluid Dynamics Fluid Flow Properties Fluid Mechanics Fossil Fuels Fuel Injection Fuels Gas Turbine Guidance, Navigation, and Control Systems Heat Engines Helicopters Hydraulics Hydrodynamics Ignition Systems Jet Aircraft Liquid Fuels Longitudinal Static Stability Military Airbases Military Aircraft Military Aviation Non-Renewable Energy Petroleum Power Station Propulsion and Power Reciprocating Engine Rocket Engine Rocketry Rotorcrafts Sensors Short Takeoff and Landing Takeoff and Landing Transducers Turbines Turbomachinery Unmanned Aerial Vehicle Wind Engineering Wind Tunnels Wind Turbine Wing Configurations Wing Planforms

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airspeed广播视频服务器

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世界广播电视 2004年第7期18卷 118-118页

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