Increasing sensitivity of coal analysis by gamma-albedo method.


Karaganda State Technical University, Karaganda, Kazakhstan. Electronic address: [Email]


The article deals with the methodological features of the gamma-albedo method and ways to increase sensitivity of measuring the coal ash content. On the basis of the developed mathematical model the inverse nature of sensitivity of the method is studied depending on the energy of primary gamma radiation. The need for a differentiated account of the nature of scattering that allows using a selective filter as a means of increasing sensitivity is revealed. It is shown that the qualitatively different nature of changing the mass coefficients of coherent and incoherent scattering of gamma radiation from its energy and effective atomic number allows increasing sensitivity of ash measurement according to the value of the ratio of coherently and incoherently scattered gamma radiation intensities. There is given the comparison of the sensitivity data for various modifications of the gamma-albedo method.


Ash content measurement sensitivity,Coal,Coherent and incoherent scattering of γ-radiation,Gamma-albedo method,Optimization of parameters,Selective filter,