ANALYSIS BY RADIOACTIVATION USING 14.8 MEV NEUTRONS APPLIED TO EXPLORATION OF MINERAL-RESOURCES

This paper presents a relative method of determination of the contents of Nb, Zr and Ti in the geological samples, by 14. 8 Mev neutron radio activation. The quantities about 10 g have been irradiated at the TEXAS-9900 neutron generator of the Institute of Nuclear Physics and Engineering (INPE), Romania. They have been exposed with absolutely calibrated fission chambers containing **2**3**8U. Reference detectors of materials with certified content were made, irradiated in the same conditions as the geological samples. The measurements have been performed by gamma high-resolution spectrometry, both samples and reference detectors being measured in the plane contact.