Modelling of dynamic screening effects in solid state

Abstract

A dynamic model of electron orbitals deformation (EODD) has been developed making it possible to allow for dynamic effects of outer electron shells screening on deuterons interactions. Computer simulation based on the EODD model revealed that deuterons in the palladium crystalline structure can approach each other so that the distance between them can be less than 0.01 Å and gave estimated probability of such an approach. Assuming deuterium be completely mobile in palladium, the calculated rate of the fusion reaction at 300 K is 10 −10 -10 −12 s −1 per the D-D pair. This value corresponds to the energy release of 1-100 W per gram of palladium β-deuteride and is in good agreement with experimental data for excess heat measurements within an order of magnitude.

Calculations of Nuclear Reactions Probability in a Crystal Lattice of Lanthanum Deuteride

“…It is 3 orders of magnitude less than the analogous rate calculated earlier for palladium deuteride [1][2][3], but more than ten times higher than the rate calculated for titanium deuteride [4].…”

“…Although most research on nuclear reactions in metal have been done with palladium, the high price and limited quantities of this material hinder the practical use of it. From the foregoing, the importance of theoretical calculation for search of materials is clear -a search to find which materials can be activated to produce nuclear fusion at low energies.We conducted a simulation of nuclear reactions of deuterium in palladium crystal lattice based on a dynamic model of electron orbital deformation in which hydrogen atom are located in octahedral sites of closely packed metal atoms [1][2][3][4]. The calculation results correspond within an order of magnitude to the experimental measurements of excess energy output (see, for example, [5] and reviews in [1,6]).…”

“…We conducted a simulation of nuclear reactions of deuterium in palladium crystal lattice based on a dynamic model of electron orbital deformation in which hydrogen atom are located in octahedral sites of closely packed metal atoms [1][2][3][4]. The calculation results correspond within an order of magnitude to the experimental measurements of excess energy output (see, for example, [5] and reviews in [1,6]).…”

“…For calculations of probability of nuclear reactions of hydrogen isotopes in the crystal lattice of lanthanum deuteride the dynamic model of electron orbitals deformation (EODD) offered earlier for palladium deuteride was used [1][2][3]. The hydrogen isotopes predominantly occupy tetrahedral sites in the face-centered cubic lattice of lanthanum hydride.…”

“…3 one can see that at the energy < 1 eV the reaction rates in both cases are nearly equal, but at higher energy the dependence character differ. The D-D reaction rate in lanthanum deuteride have a reverse dependence on energy in comparison with palladium deuteride [see [1][2][3].…”