2,784 resources related to Gamma rays
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2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD)
The NSS/MIC offers an outstanding opportunity for scientists and engineers interested in the fields of nuclear science, radiation detection, accelerators, high energy physics and astrophysics, and related software to present their latest developments and ideas. The scientific program provides a comprehensive review of the latest developments in technology and covers a wide range of applications from radiation and accelerator instrumentation, new detector materials, to complex detector systems for physical sciences, and advanced imaging systems for biological and medical research.
2015 IEEE International Conference on Plasma Sciences (ICOPS)
Basic Processes in Fully and Partially Ionized Plasmas; Microwave Generation and Plasma Interactions; Charged Particle Beams and Sources; High Energy Density Plasmas and Applications; Industrial, Commercial, and Medical Plasma Applications; Plasma Diagnostics; Pulsed Power and other Plasma Applications.
2013 IEEE 25th Symposium on Fusion Engineering (SOFE)
SOFE covers all engineering aspects of existing and future fusion experiments, development facilities, and power plants for magnetic and inertial fusion energy.
All aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.
Nuclear Science Symposium, 1997. IEEE, 1997
This work investigates the use of annihilation photons from gamma-ray-induced electron-positron pair production to inspect objects when only one side is accessible. The Z2-dependence of the pair-production cross section and the high penetration of 511-keV photons allow this method to differentiate high-Z materials in low-Z matrices. The experimental results for the dependence of the back-streaming photon yield on Z shows ...
Nuclear Science, IEEE Transactions on, 2008
A BC523A liquid scintillator loaded with boron-10 was tested as a detector for both fast and thermal neutrons. A pulse shape discrimination (PSD) method based on a zero-crossing principle was applied to distinguish between neutron and gamma radiation. High quantum efficiency Photonis XP5500B photomultiplier was used to enhance light detection from the scintillator. This allowed a good registration of the ...
Nuclear Science, IEEE Transactions on, 1981
We have calibrated the relative efficiency up to 9.7 MeV for two coaxial detectors, one Ge(Li) and one high purity Ge. The efficiency curves were determined by using a combination of standard radioactive sources and (n, γ) reactions. Based on the result of this work, the general slope of the two detector efficiency curves appears to be similar and in ...
Radiation and Its Effects on Components and Systems, 1999. RADECS 99. 1999 Fifth European Conference on, 1999
The Standard Radiation Environment Monitor (SREM) was designed in a cooperation between ESA-ESTEC, PSI and Contraves Space-the manufacturer. The monitor detects cosmic particles using 3 direction sensitive Si detectors. Total dose measurement is performed with internal and external RADFETs located at selected positions on the satellite. Their sensitivity towards protons and gammas was characterised for various energies, dose rates and ...
Nuclear Science, IEEE Transactions on, 1983
The level structure of Pd-105 has been studied from the decay of Ag-105g. The energies and intensities of 50 gamma rays have been precisely measured using a 64.1 c.c. Ge(Li) detector (FWHM=2.1 keV at 1.33 MeV). The gamma ray singles spectrum measurements confirm the existence of the 158.93, 167.5, 202.17, 216.11, 382.5, 486.65, 576.64, 583.01, 844.34, 860.20, 921.23, 929.01 and ...
J. Cal-Gonzá lez; E. Herranz; E. Vicente; J. M. Udí as; S. R. Dave; V. Parot; E. Lage; J. L. Herraiz 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC), 2013
Most PET scanners are designed to detect and record gamma-ray coincidences from the annihilation of positrons coming from radiotracers. Multiple coincidences, those for which more than two gamma-rays are detected within the coincidence time window, are usually discarded. Those events can be registered and used to increase the sensitivity of the scanner and to differentiate positron-gamma emitters from pure positron ...
S. Mihara; T. Doke; Y. Kamiya; T. Mashimo; T. Mori; H. Nishiguchi; W. Ootani; S. Orito; K. Ozone; R. Sawada; S. Suzuki; G. Tejima; K. Terasawa; K. Yahagi; M. Yamashita; J. Yashima IEEE Transactions on Nuclear Science, 2002
We are developing a new type of photon detector for an experiment to search for muons decaying into a positron and gamma ray. Our sensitivity on the branching ratio is expected to reach 10-14 by use of the world's most intense continuous muon beam at Paul Scherrer Institut (PSI). In this experiment, the photon detector will utilize liquid Xe as ...
Weiqin Zou; Duanyong Li; Yangzi Xu; Xuexiong Huang; Jingde Li Electrets, 1996. (ISE 9), 9th International Symposium on, 1996
This paper studied the Radiation Effects of Ferroelectric-Electret composite. Found it has changed that the data of resistivity ρ, dielectric constant ε, pyroelectric coefficient P, piezoelectric constant d33 and the characteristics of pyroelectric relaxation and polarization relaxation since composite undergoing gamma radiation, and found there are two limit value of accumulative radiation dose: r0 and R0 for composite. When the ...
IEEE 278-1967, 1968
Arthur Roberts IEEE Transactions on Nuclear Science, 1970
1. The kinematic analysis of high-energy events requires, in general, particle momentum measurements with an absolute error of Â±50-100 MeV/c, independent of momentum. Corresponding errors are 0.05% at 100 GeV/c, less at higher momenta. To minimize the cost of magnetic deflection of high-energy particles, improvements in angular precision, hence, in particle location accuracy, are desirable. The present analysis indicates that ...
Natural phenomena, such as gamma rays produced by radioactive decay processes in the soil and cosmic radiation originating from solar flares and other galactic objects, can ionize the air molecules. This chapter first discusses ionization and deionization processes in gases. This is followed by a discussion on ionization and attachment coefficients. Two typical breakdown mechanisms occur in gases, each of them operating under specifically favorable conditions: Townsend's mechanism and the streamer mechanism. Corona discharges in air can burn on the overstressed zones of hot electrodes. This kind of discharge occupies a short layer, attached to the energized conductor. When a conductor is in corona, then the electric field on the surface is somehow influenced by the surrounding ion space charge. Kaptzov's hypothesis (KH) relates to the assumption that the space charge emitted into the interelectrode gap is in amounts that hold the surface field at the onset level.
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Pulsed Power Equipment Technologist (Early/Mid-Career)
Sandia National Laboratories