نتایج جستجو برای: Compton Pectrometry
تعداد نتایج: 6452 فیلتر نتایج به سال:
Introduction: Unfolding X-ray spectrum is a powerful tool for quality control of X-ray tubes. Generally, the acquisition of the X-ray spectrum in diagnostic radiology departments is complicated and difficult due to high photon flux. Measurement of x ray spectra using radiation detectors could not be performed accurately, because of the pulse pile up. Therefore, indirect methods...
The application of large plastic scintillators is widely increasing in the different areas of industry, medicine and security due to technical and economic advantages. One of the main disadvantages of these detectors is the unknown position of Compton edge at gamma ray spectrum. In this research, GEANT4/GATE code has been used to simulate the gamma ray spectrum for different volumes of large pl...
At the beginning of thermonuclear ignition in fusion plasma, the bremsstrahlung radiation is dominant phenomenon, the photons distribution function is Planckian and plasma is considered as optically thick one. But at a certain energy, the bremsstrahlung radiation and Compton scattering losses rates become equal and plasma makes a transition from optically thick to optically thin and photons dis...
The measurement of the polarization of cosmic microwave background (CMB) provides considerable useful information about different physical phenomena at the last scattering surface. The polarization of CMB is due to Compton scattering. In this work, we consider the parity violation of Compton scattering. Then we insert the new amplitude into the quantum Boltzmann equation and show that the forwa...
ur lives are often directed by chance occurrences. For Robert Guthrie, a lifelong interest in the cause of mental retardation came from a retarded son and a dedication to preventing mental retardation in phenylketonuria (PKU) came from the diagnosis of PKU in his wife’s mentally retarded niece. From these roots came Guthrie’s introduction f newborn screening for PKU 3 and, subsequently, to the ...
We select eight nearby AGNs which, based on previous work, appear to be Compton-thin in the line of sight. model with MYTORUS their broadband X-ray spectra from 20 individual observations $Suzaku$, accounting self-consistently for Fe K$\alpha$ emission, as well direct and scattered continuum matter finite column density solar abundance. Our configuration allows us measure global, out sight, equ...
The QCD processes that give rise to scaling violations in DIS at leading order, namely QCD Compton (QCDC) and boson–gluon fusion (BGF), also give rise to distinct jets in the final state provided that the energy and momentum transfer are large enough. These processes are illustrated in Fig. 1. Both BGF and QCDC depend on αs(MZ), but the BGF process also depends directly on the gluon parton dist...
It has been recently proposed [1] to use polarization of Compton scattered γrays to improve the imaging performance of Compton telescopes. Building upon that work, we detected the aforementioned polarization in a sample of 1.836 MeV γ-rays from the LXeGRIT Compton telescope. Here we present the measurement, together with detector oriented considerations on the application of the principle to a ...
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