用中子感生瞬发γ分析方法检测煤的发热量Q_(DW)~Y

Determination of calorific value Q^YDW of coal by analysis of neutron-induced prompt gamma rays

本文研究了煤发热量Q^Y_(DW)的一种快速检测方法。测量了中子反应产生的瞬发γ射线谱,由特征γ射线的强度确定碳含量C_Y,从而得出Q^Y_(DW)。C_Y的实验误差<2％,Q^Y_(DW)的误差<1.25kJ/g。几分钟可完成一个样品检测。

A rapid method for determination of calorific values QYDW of coal was presented in this paper. The spectra of neutron-induced prompt gamma rays from coal were measured. The contents, Cy, of carbon are determined from intensities of the characteristic rays, and calorific values, QyDW, of coal were deduced from Cy. The uncertainties of Cy and QYDW measured were less than 2% and 1.25kJ/g respectively. It took only a few minutes for measurement of one sample.