Dead Time Correction at X and Gamma-Rays Detectors - Part 1-Differantial Correction
Abstract
The counting systems consisting of electronics devices are used for detection of radiation due to X and Gamma rays. Main reason for the dead time in counting system is these electronic devices. As a result of this dead time, the counting losses occur. The counting loss also means the loss of the counting rate. Determination of the counting rate losses in quantitative and qualitative analysis become a vital step for correction analysis. Therefore, the counting rate correction required for counting system is of great importance. These counting losses in spectrometry are due to the pulse pile-up, paralyzable and non-paralyzable system dead time or dual and triple combination of these three mechanisms. Paralyzable and non-paralyzable models are well-known and frequently used for correction of counting rate losses dependent on the system dead time. However, these two models do not provide enough correction at medium and high counting rates. Therefore, new models for corrections of counting rate losses are needed.
Keywords
Peaking time, Resolving time, Dead time, Counting losses, Semiconductor detectors
Kaynakça
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