[Paper Review] A model for enhanced fusion reaction in a solid matrix of metal deuterides

K. P. Sinha, A. Meulenberg|ArXiv.org|Jan 16, 2009

Cold Fusion and Nuclear Reactions9 references3 citations

TL;DR

This paper proposes a model in which deuterium atoms in a solid metal deuteride matrix form one-dimensional chainlets or line defects that enable electron pair localization (lochons), creating local electron-boson attraction and strong screening of nuclear repulsion. This mechanism enhances low-energy D+D- fusion cross-sections beyond standard estimates, predicting a significant increase in fusion probability under non-equilibrium solid-state conditions.

ABSTRACT

Our study shows that the cross-section for fusion improves considerably if d-d pairs are located in linear (one-dimensional) chainlets or line defects. Such non-equilibrium defects can exist only in a solid matrix. Further, solids harbor lattice vibrational modes (quanta, phonons) whose longitudinal-optical modes interact strongly with electrons and ions. One such interaction, resulting in potential inversion, causes localization of electron pairs on deuterons. Thus, we have attraction of D+ D- pairs and strong screening of the nuclear repulsion due to these local electron pairs (local charged bosons: acronym, lochons). This attraction and strong coupling permits low-energy deuterons to approach close enough to alter the standard equations used to define nuclear-interaction cross-sections. These altered equations not only predict that low-energy-nuclear reactions (LENR) of D+ D- (and H+ H-) pairs are possible, they predict that they are probable.

Motivation & Objective

• To explain the potential for enhanced low-energy nuclear fusion in solid-state metal deuterides.
• To address the long-standing challenge of overcoming Coulomb repulsion in deuterium fusion at low energies.
• To propose a physical mechanism involving electron pair localization and phonon coupling that enables fusion at lower energies than predicted by standard models.
• To provide a theoretical basis for low-energy nuclear reactions (LENR) in deuterated materials.

Proposed method

• Modeling deuterium pairs in one-dimensional chainlets or line defects within a solid metal deuteride lattice.
• Analyzing the role of longitudinal-optical phonons in inducing potential inversion that localizes electron pairs on deuterons.
• Introducing the concept of 'lochons'—localized charged bosons formed by electron pairs bound to deuterons—resulting in effective attraction between D+ and D- ions.
• Applying strong electron screening and nuclear potential modification due to lochons to alter standard fusion cross-section equations.
• Using lattice vibrational modes (phonons) to mediate electron-ion interactions and stabilize the localized electron pairs.
• Revising standard nuclear reaction cross-section calculations to incorporate the effects of electron localization and screening in the solid matrix.

Experimental results

Research questions

• RQ1 Can localized electron pairs in a solid-state matrix significantly reduce the Coulomb barrier between deuterons?
• RQ2 How do lattice phonons in metal deuterides influence electron pairing and nuclear interaction in deuterium pairs?
• RQ3 What is the impact of electron localization (lochons) on the effective fusion cross-section in low-energy D+D- systems?
• RQ4 Can the standard fusion cross-section model be modified to account for strong electron screening and attraction in solid-state deuterides?
• RQ5 Is there a mechanism in solid metal deuterides that enables probable low-energy nuclear fusion without requiring extreme temperatures?

Key findings

• The formation of one-dimensional chainlets or line defects in metal deuterides enables the localization of electron pairs on deuterons, forming lochons that mediate effective attraction between D+ and D- ions.
• Phonon-mediated potential inversion leads to strong electron localization, resulting in significant screening of the nuclear Coulomb repulsion.
• The modified cross-section equations predict a substantial enhancement in fusion probability for D+D- pairs at low energies compared to standard estimates.
• The model demonstrates that low-energy nuclear reactions (LENR) of D+D- and H+H- pairs are not only possible but probable under the proposed solid-state conditions.
• The presence of lattice vibrational modes (phonons) in the solid matrix is essential for sustaining the non-equilibrium electron pairing and localization required for the mechanism.