Europhys. Lett.
Volume 67, Number 3, August 2004
Page(s) 362 - 368
Section Atomic and molecular physics
Published online 01 July 2004
Europhys. Lett., 67 (3), pp. 362-368 (2004)
DOI: 10.1209/epl/i2003-10290-0

Modelling of dynamic screening effects in solid state

V. A. Kirkinskii and Yu. A. Novikov

Institute of Mineralogy and Petrography of the Siberian Branch of the Russian Academy of Sciences - prospect Acad. Koptyuga, 3, Novosibirsk, 630090, Russia

(Received 12 November 2003; accepted in final form 17 May 2004)

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 $\un{\AA}$ and gave estimated probability of such an approach. Assuming deuterium be completely mobile in palladium, the calculated rate of the fusion reaction at 300 $\un{K}$ is 10-10- 10-12 $\un{s^{-1}}$ per the D-D pair. This value corresponds to the energy release of 1-100 $\un{W}$ per gram of palladium $\beta$-deuteride and is in good agreement with experimental data for excess heat measurements within an order of magnitude.

34.20.Cf - Interatomic potentials and forces.
25.70.Jj - Fusion and fusion-fission reactions.
25.45.-z - $\chem{{}^2H}$-induced reactions.

© EDP Sciences 2004