نتایج جستجو برای: transition radiation detector
تعداد نتایج: 547405 فیلتر نتایج به سال:
The NDIR gas detection method is based on the absorption of infrared radiation, which is shown by many polyatomic or heterodimer diatomic gases. For example CO2 gas absorbs IR radiation at 4.26μm wavelength. The detected radiation intensity at this wavelength decreases if the concentration of CO2 increases between source and detector. The extent of absorption mainly depends on the absolute numb...
the harmful effects of the long-term ocular exposure to cumulative levels of infrared radiation (ir) in glassblowing and foundries have been recognized since the late 19th century. these effects include cataracts, keratitis, and chronic dry eye problems. therefore, infrared radiation measurements are critical and need to be assessed regularly in the industries and workplaces where there are hig...
Behavior correction of the inverse square law in irradiation room for volumetric source and detector
The inverse-square law is used to calculate the radiation flux at difference distances from the source. This law is applied for point source and point detector in vacuum. This research aims to study the point behavior of volumetric source and detector by undertaking required corrections on inverse-square law through the elimination of scattered neutrons contribution. The measurements have been ...
High Purity Germanium detectors (HPGe) are subdivisions of semiconductor detectors which are widely used in nuclear technology from space industry to nuclear medicine, due to their high resolution, low dead time, unlimited size and compatibility with a variety of environments. The( absolute and intrinsic) efficiency of the HPGe detector, which depends on the geometry of the source-detector syst...
The Cosmic Ray Energetics And Mass (CREAM) experiment is designed to investigate high energy (10 ~ 10 eV) cosmic rays over the elemental range from hydrogen to iron (1 ≤ Z ≤ 26), through a series of long balloon flights. Originally planned to be flown on the first of the new Ultra Long Duration Balloon (ULDB) being developed by NASA, the CREAM instrument was launched as a long duration balloons...
The ATLAS Inner Detector consists of three sub-systems, the Pixel Detector at the innermost radius, the SemiConductor Tracker at intermediate radii, and the Transition Radiation Tracker (TRT) at the outermost radius in front of the electromagnetic calorimeter. The TRT provides a combination of continuous tracking with many projective measurements based on individual drift-tubes (or straws) and ...
1350-4495/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.infrared.2009.05.024 * Corresponding author. Tel.: +1 404 413 6037; fax E-mail address: [email protected] (A.G.U. Perera). A GaAs/AlGaAs heterojunction is used as a spin-split-off band IR detector operating at or around room temperature. This detector structure followed a similar layer architecture to the quantum well IR photo detect...
LiteBIRD is a future satellite mission designed to observe the polarization of cosmic microwave background radiation in order probe inflationary universe. set sky using three telescopes with transition-edge sensor bolometers. In this work we estimated instrumental sensitivity its current design. We detector noise due optical loadings physical optics and ray-tracing simulations. The terms associ...
Background: High level radiation areas have been recognized on various parts of the earth. Mahallat hot spring region is one of these areas. Study of exposure in these areas can be helpful in investigating the effects of ionizing radiation. Internal and external exposure to the staff was studied. Materials and Methods: Used materials and instruments include: RSS-112 ionizing chamber fo...
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