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

被引：2

作者：

Qin Zhangjian ^{[1
]}

Ge Liangquan ^{[1
]}

Wu Qifan ^{[2
]}

Cheng Jianping ^{[2
]}

机构：

[1] Chengdu Univ Technol, Sch Nucl Technol & Automat Engn, Chengdu 610059, Peoples R China

[2] Tsinghua Univ, Dept Phys Elect, Beijing 100084, Peoples R China

来源：

SUSTAINABLE CONSTRUCTION MATERIALS AND COMPUTER ENGINEERING | 2012年 / 346卷

关键词：

Spectral drift; Spectra stabilization; Gamma-ray spectrometer; Least squares method; STABILIZATION; DETECTORS;

D O I：

10.4028/www.scientific.net/AMR.346.705

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：705 / +

页数：2