Search results
Results from the WOW.Com Content Network
Gamma-ray spectroscopy is the qualitative study of the energy spectra of gamma-ray sources, such as in the nuclear industry, geochemical investigation, and astrophysics. Gamma-ray spectrometry , on the other hand, is the method used to acquire a quantitative spectrum measurement.
A gamma-ray spectrometer (GRS) is an instrument for measuring the distribution (or spectrum—see figure) of the intensity of gamma radiation versus the energy of each photon. The study and analysis of gamma-ray spectra for scientific and technical use is called gamma spectroscopy , and gamma-ray spectrometers are the instruments which observe ...
Working principle of the MGS code. To determine the interaction point of a γ ray in a segmented HPGe detector, the shape of the signal induced on the charge-collecting electrode (corresponding to the segment in which the interaction took place) and those of the transient signals measured on the neighbouring segments are analysed.
Specialized software processes the "sound" to perform pulse-height analysis and multichannel scaling, forming a complete MCA. [3] Sound cards have high-speed but low-resolution (up to 192 kHz) ADC chips, allowing for reasonable gamma spectroscopy performance for a low-to-medium count rate. [4]
A Mössbauer absorption spectrum of 57 Fe. Mössbauer spectroscopy is a spectroscopic technique based on the Mössbauer effect.This effect, discovered by Rudolf Mössbauer (sometimes written "Moessbauer", German: "Mößbauer") in 1958, consists of the nearly recoil-free emission and absorption of nuclear gamma rays in solids.
Gamma counters are used in radiobinding assays, [5] radioimmunoassays (RIA) [6] and nuclear medicine measurements such as GFR [7] and hematocrit. [ 8 ] Some gamma counters can be used for gamma spectroscopy to identify radioactive materials based on their output energy spectrum, e.g. as a wipe test counter .
Prompt-gamma neutron activation analysis (PGAA) is a very widely applicable technique for determining the presence and amount of many elements simultaneously in samples ranging in size from micrograms to many grams. It is a non-destructive method, and the chemical form and shape of the sample are relatively unimportant.
Gamma spectroscopy is the study of the energetic transitions in atomic nuclei, which are generally associated with the absorption or emission of gamma rays. As in optical spectroscopy (see Franck–Condon effect) the absorption of gamma rays by a nucleus is especially likely (i.e., peaks in a "resonance") when the energy of the gamma ray is the ...