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本文叙述了一种新的测量方法—同位素X萤光背射法,用低能光子源激发稀土矿浆样品,使之产生特征X射线峰和反散射峰。反散射峰的强度与矿浆浓度存在单值对应的非线性关系。浓度越低反散射峰强度越高,由此可直接测量矿浆浓度。它解决了选矿过程中高原子序数介质的矿浆浓度的在线测量问题。这种新的放射性同位素应用技术,与同位素射线吸收法测量矿浆浓度在原理上有着根本不同。目前,此方法未见公开报导。
In this paper, a new measuring method called isotope X fluorescence backscattering method is introduced, in which the low-energy photon source is used to excite rare earth pulp samples to produce characteristic X-ray peaks and backscattering peaks. There is a non-linear relationship between the strength of the backscattering peak and the pulp concentration. The lower the concentration, the higher the intensity of the backscattered peak and hence the direct measurement of the slurry concentration. It solves the problem of online measurement of pulp concentration in high-atomic-number media during mineral processing. This new radioisotope application technique is radically different in principle from isotope-ray absorption measurements of pulp concentration. At present, this method has not been publicly reported.