radiation detector Articles

  • The nanoparticles of BaSO4:Eu as detectors for high doses of different ionising radiations

    Nanoparticles of a BaSO4:Eu phosphor with a particle size of around 40 nm have been irradiated by 48 MeV 7Li3+, 75 MeV C6+ and 90 MeV O7+ ion beams at the fluence range of 1 ∼ l09–1 ∼ 1013 ions/cm2. The thermoluminescence (TL) glow curves of the irradiated samples were recorded and studied. The microcrystalline form of this sample is included in the study with the aim of reporting a comparative ...


    By Inderscience Publishers

  • Radiation Monitors and Meters

    Light Description and Applications The light meter is a portable unit designed to measure visible, UV, and near-UV light in the workplace. (The CTC has a UV light meter available through its loan program, ALEP.) The light meter is capable of reading any optical unit of energy or power level if the appropriate detector has been calibrated with the meter. The spectral range of the instrument is ...

  • Aerial Radiation Detection

    In this time of multiple threats to our security: dirty bomb; cyber; shooters in public places; homemade bombs; misinformation; etc. we feel extremely vulnerable; perhaps more vulnerable than ever before. With the advent of Drone technology now available to private citizens, technology previously only held by the military, the opportunity has come to marry Drone Technology with aerial sensors. ...


    By Technical Associates

  • Development and production of holders for extremity detectors

    The objective of this paper was to develop and produce holders for thermoluminescent detectors for use in interventionist radiology and nuclear medicine. To obtain the value of Dose Equivalent for Extremities, a dosimetry of extremities was done. The holders must have characteristics which are adequate for their intended use. The detector element used in the holders was the LiF:Mg,Ti (TLD-100) ...


    By Inderscience Publishers

  • STS Products featured in 1st Edition of Radiation Regulator Magazine

     Contamination Simulators by STS Ltd  Safe Training Systems Ltd (STS) are based  in the UK. STS manufacture and sell  instrumentation for the training of workers involved in  the handling and identification of radioactive material  through a range of realistic simulated instruments.  They sell “off-the-shelf” products ...


    By Safe Training Systems Ltd

  • Background minimisation of HPGe detector by passive graded shielding

    A simple and economical passive graded shielding which is combination of low and high Z materials for HPGe detector for background radiation minimisation is developed for better identification of the peaks in acquired spectrum by reducing Compton continuum. The present paper discusses the design and advantages of the passive graded shielding (lead + copper + aluminium) which encloses the HPGe ...


    By Inderscience Publishers

  • Assessment of radiation dose due to natural radionuclides in various cement samples

    Samples of Ordinary Portland Cement (OPC) and Portland Pozzolana Cement (PPC) from five companies were analysed for the measurement of 226Ra, 232Th and 40K using a HPGe detector based on high–resolution gamma spectrometry system. The measured ...


    By Inderscience Publishers

  • Evaluation of natural radioactivity in rocks of Nilgiri hills and their radiation hazard to mankind

    Twenty three rock samples were collected from various altitudes of Nilgiri hills, Tamil Nadu, India. A survey was carried out to determine the activity concentration of selected radionuclides (238U, 232Th, 40K) by means of gamma–ray spectroscopy using NaI (Tl) detector. From the measured spectra, ...


    By Inderscience Publishers

  • Radiation doses due to natural radioactivity in the Afra hot springs, Jordan

    This paper briefly reports some data from investigations carried out in the Afra hot springs, 160 km south of Amman, Jordan. These data emphasise the new findings of high-radiation dose equivalents, mainly to identify the potential and known impacts of exposure on public health in High Levels of Natural Radiation Areas (HLNRAs) of this region, and also to make recommendations for further studies. ...


    By Inderscience Publishers

  • IR Gas Detector Provides Rapid Response

    The advanced Model IR400 Point IR Combustible Gas Detector from General Monitors features an industry-leading three-second T90 response time to the presence of combustible hydrocarbon-based gases, which allows plant operators to respond quickly to gas leaks and ...


    By General Monitors

  • Study of the use of thermoluminescent materials in mixed fields

    The scientific research and the application of the thermoluminescence phenomenon have been advancing for the last two decades. Thermoluminescent Detectors (TLDs) present advantages when used in dosimetry. These advantages include reduced size and the non-use of wires. As a disadvantage, we see the loss of all signals after the reading (information) of the detectors. In the present study, we used ...


    By Inderscience Publishers

  • Natural radioactivity of some Egyptian building materials

    The study of the radiation hazards from building materials is of interest in most countries. The measurements of natural radioactivity were verified for some Egyptian building materials to assess any possible radiological hazard due to their use. The measurements were performed by gamma-ray spectroscopy using a Hyper-Pure Germanium (HPGe) detector. A CR-39 track detector was used to measure the ...


    By Inderscience Publishers

  • Collimation and background in the pulsed neutron activation method for determination of water flow in pipes

    In a Pulsed Neutron Activation (PNA) flowmeter, the water in a pipe is bombarded with neutron pulses, which introduce activity into the pipe. The activity is mixed with the flow, and gamma radiation emitted from the activity is measured with a detector downstream. The average velocity of the water is then calculated using the time-resolved detector signal. In this paper, the effect of collimation ...


    By Inderscience Publishers

  • The study of radon levels and absorbed dose in the staff and visitors of Alisadr Cave

    CR-39 passive integrating Solid State Nuclear Track etch Detectors (SSNTDs) were used to measure atmospheric radon concentrations in the Alisadr show cave in Hamedan province, Iran. This was done in order to assess the risk from natural environmental radiation to tourists and cave guides. The study was carried out in 12 locations in the winter and spring periods. The mean radon concentration ...


    By Inderscience Publishers

  • A Monte Carlo simulation of a whole body counter

    The preparedness of response to the accidental incorporation of radionuclides into the human body by inhalation or ingestion is a subject of major concern due to the generalised use of ionising radiations in medical and industrial applications. Following a radiological or nuclear accident or in case of occupational exposure due to an accidental dispersion of radionuclides, a rapid methodology is ...


    By Inderscience Publishers

  • Evaluating emergency response models of radiological dispersion in complex terrain

    Operational airborne releases of trace quantities of the radioactive noble gas 41Ar from the HIFAR Nuclear Research Reactor located in Sydney, Australia, are valuable for evaluating emergency response models incorporating radiological dispersion. A network of meteorological stations and GR–150 environmental gamma dose detectors are placed in the complex terrain within a 5 km radius of the site. ...


    By Inderscience Publishers

  • Thoron exposure among tour guides in southern Brazilian show caves

    An assessment of thoron concentration was carried out in the most visited caves of the natural state park in Brazil, 'Parque Estadual do Alto Ribeira' (PETAR), by using Makrofol E nuclear track detectors placed in twin chambers. PETAR, a natural park, was created in 1958 and is located in the southern region of Sao Paulo State. Detectors were placed in the caves most visited by tourists. Tour ...


    By Inderscience Publishers

  • Pb–210 irradiation dose estimation for inhabitants living in high natural background areas on Pernambuco/Brazil

    This work was designed to: (a) determine 210Pb concentration in human urine samples of inhabitants of two regions with high natural radiation in the state of Pernambuco - Brazil; (b) estimate radiation dose in bones as a result of this radionuclide incorporation. For this, urine samples of healthy and non–smoker subjects were studied. Pb–210 was separated by ion–exchange resin ...


    By Inderscience Publishers

  • Calibration of an alpha particle irradiator for in vitro cells irradiation

    An alpha particle irradiator using 210Po radioactive sources was calibrated under specific conditions for cell irradiation. The energy spectrum of α-particles hitting the cell monolayer was measured by a surface barrier detector. The simulation of the results obtained with this detector was performed using the MCNPX Monte Carlo code with the same conditions ...


    By Inderscience Publishers

  • Low natural terrestrial radioactivity in oil–derived lubricants

    Oil and gas production processing operations have been known to involve naturally occurring radioactive materials that lead to internal and external radiation hazards and thus a significant radiation dose to the workers. In this work, samples of nine oil lubricants used on a daily basis were collected from local suppliers in Egypt and analysed to determine their natural radioactivity. The ...


    By Inderscience Publishers

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