Repository of the Institute of Nuclear Physics PAN
Not a member yet
364 research outputs found
Sort by
Study on Adsorption of Zr, Hf and Nb as Homologues of Super-Heavy Elements on the Films Prepared of Some Liquid Ion Exchangers on the Surface of Some Foils
No full textSorption of Zr, Hf and Nb as homologues of super-heavy elements 104 (Rf) and 105 (Db) was studied on films of liquid ion exchangers covering one side of metal or plastic foils. Many tests with homologues of Rf and Db were carried out using Aliquat-336 and HDEHP, the anion and cation liquid exchangers. It was found that the examined nuclides were extracted with a high efficiency by Aliquat-336 from diluted solutions of hydrofluoric acid. It was also shown, that the examined metal ions are extracted by HDEHP with high extraction coefficients from diluted solutions of H2SO4 acid
Feasibility study of experimental detection of the hydrogen content in rock material by a pulsed neutron method
No full textTheoretical principles of a pulsed neutron method to measure the water or hydrogen content in a rock material have been tested on the experimental set-up at the fast neutron generator in the INP. The time decay constant of the thermal neutron flux in the samples has been measured as a function of the hydrogen content. Dry crumbled granite has been used as a rock sample. The hydrogen content has varied due to addition of a defined amount of polyethylene (0 to 20 %). A few arrangements (neutron source + sample) have been tried. A dedicated pulsed thermal neutron source has been designed and built. The measuring set-up has been chosen for a final elaboration of the method
Influence of the water content in rock on the thermal neutron diffusion and diffusion cooling coefficients (by Monte Carlo simulations). II: – Quartz
No full textThe dependence of the thermal neutron diffusion parameters on the water content w in quartz, SiO2, has been studied by means of Monte Carlo simulations of the pulsed neutron experiments for a number of series of samples. The density-removed diffusion cooling coefficient CM varies hyperbolically between 39 400 000 and 4940 cm4s–1(g/cm3)3 at the water content in the full range 0 ≤ w ≤.1. The obtained function CM(w) is compared with the analogous dependence for moisturized dolomite
