A New Algorithm for Spectral Drift Calculation in a Gamma-Ray Spectrometer

Zhang Jian Qin; Liang Quan Ge; Qi Fan Wu; Jian Ping Cheng

doi:10.4028/www.scientific.net/AMR.346.705

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 346A New Algorithm for Spectral Drift Calculation in...

A New Algorithm for Spectral Drift Calculation in a Gamma-Ray Spectrometer

Abstract:

Spectral drift of any origin consisting of detectors and nuclear electronics affects the long-term stability in a gamma-ray spectrometer, which is essential to maintaining the high quality of gamma energy spectra. The feedback regulation according to the quantity of spectral drift can restore the system’s stability. A new algorithm for spectral drift calculation is given in this paper. A digital logic unit is developed in a FPGA chip based on the algorithm, and a MCU coordinating with it can fast calculate the spectral drift within only less than 110 instruction periods.

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Periodical:

Advanced Materials Research (Volume 346)

Pages:

705-710

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.346.705

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Online since:

September 2011

Authors:

Zhang Jian Qin, Liang Quan Ge, Qi Fan Wu, Jian Ping Cheng

Keywords:

Gamma-Ray Spectrometer, Least-Square Method (LSM), Spectra Stabilization, Spectral Drift

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