The subject is covered under the following headings; absorption and attenuation of γ-rays; γ-ray detectors; γ spectrometry; corrections to count rates; statistics of counting; radiation hazards and protection; production and availability of isotopes; glossary of terms in radiochemistry; references....
As previously mentioned, there are new gamma ray tools available that determine which elements are responsible for the radioactivity. The incoming gamma rays are separated by energy levels using special energy-sensitive detectors. The data are collected by the computer and analyzed statistically. The ...
A physics-based approach to gamma-ray response-function generation is presented in which the response of CdZnTe detectors is modeled from first principles. Numerical modeling is used to generate response functions needed for spectrum analysis for general detector configurations (e.g., electrode design,...
Gamma-ray spectroscopy that quantifies the gamma-ray energies is a critical technology widely needed in astrophysics, nuclear material detection and medical treatment. The key is to precisely count gamma-ray photons using sensitive detectors. In this paper, we investigate the operational principles of...
X-ray continuumthick elemental targetsmass absorption coefficient/ A0785 X-ray, gamma-ray instruments and techniques A2930K X- and gamma-ray spectroscopy ... TS Rao‐Sahib,DB Wittry - 《Journal of Applied Physics》 被引量: 272发表: 1974年 Principles of X-Ray Magnetic Dichroism Spectromicroscop...
Gamma ray interactions in CZT detectors excite electron-hole pairs that are subsequently measured as they transit through an electric field applied externally across the device. Electrons have a higher drift mobility than holes, and as a result, electrons are swept from a detector much quicker than...
We discuss the principles of operation and the optimization criteria for magnetic calorimeters, and the design and performance of prototype detectors for both x-ray and gamma-ray detection. In addition, we comment on the fundamental limits of the energy resolution of such detectors.Enss...
For this purpose the channel position of the maximum of each photo peak must be plotted versus the gamma-ray energy. A best fit through these data gives the energy corresponding to each channel in the multichannel analyzer. With good detectors a straight line is obtained; However, due to ...
A gamma ray detector uses a scintillation detector having a response that matches a response characteristic of a photodiode. The detector may be used to measure natural gamma rays a
applications, scintillation gamma ray detectors, such as those incorporating NaI crystal, may not be suitable due to their size and use of photomultiplier tubes. In certain other embodiments of the disclosure, solid state gamma ray detectors may be utilized. An example of such a device is shown...