Heavy-Fermion Enhanced Nuclear Processes – Fusion Screening, ⁷Be Electron Capture, and Advanced Propulsion

Author: Simone Calzighetti (Independent Researcher)
With AI-assisted analytical support 

This white paper presents DILITHIUM-2025, a fully quantitative and falsifiable framework for testing heavy-fermion–enhanced electronic effects in low-energy nuclear processes. As an independent researcher, I use advanced AI systems as analytical tools to accelerate theoretical modeling, numerical simulations, and experimental design. All results, however, remain grounded in conventional nuclear physics (ENDF cross sections, Gamow factor, Fermi's Golden Rule, Poisson statistics) and are fully reproducible.

The core hypothesis is that certain heavy-fermion materials (e.g., CePd₃, YbRh₂Si₂) exhibit dramatically enhanced effective electron mass (m* ~ 40–1000 mₑ), which increases electron density at nuclear length scales. This affects both fusion screening potentials and nuclear decay rates.

TRACK A – FUSION SCREENING: We propose that heavy-fermion materials may provide large effective screening potentials (Uₑ ≈ 700–1500 eV), significantly higher than those observed in normal metals (Pd ≈ 300 eV). Such screening would measurably enhance the D–D fusion rate at low projectile energies.

To test this, the paper develops the A1 beam experiment, a rigorous D⁺ → D–target measurement at 5–20 keV comparing PdD versus CePd₃Dₓ. ENDF-based Monte Carlo simulations (N=10,000) show a clear discriminant: if heavy-fermion screening is real, the CePd₃/Pd count-rate ratio should exceed R ≳ 1.3 with >5σ significance in less than two hours of beam time. If the ratio remains R ≈ 1.0, the hypothesis is cleanly falsified.

TRACK B – ⁷Be ELECTRON CAPTURE (NEW): We predict that the same heavy-fermion enhancement affects nuclear decay rates. The electron capture process ⁷Be + e⁻ → ⁷Li + νₑ depends directly on electron density at the nucleus |ψ(0)|². In heavy-fermion materials, enhanced m* leads to increased conduction electron contribution to |ψ(0)|², accelerating the decay.

Quantitative predictions based on Fermi's Golden Rule with relativistic corrections: the ⁷Be half-life (53.22 days in vacuum) should decrease to ~47 days in CePd₃ (Δt₁/₂ = -6.2 days, -12%) and ~36 days in YbRh₂Si₂ (Δt₁/₂ = -17 days, -32%). Monte Carlo simulations (N=100) confirm that with a 1 MBq source and 150-day measurement, the predicted effect would be detected at >1000σ significance. If no deviation is observed, the heavy-fermion hypothesis is cleanly falsified.

This experiment provides a clean, independent validation of heavy-fermion effects on nuclear processes, free from the experimental complexities of fusion measurements.

COMPLEMENTARY EXPERIMENTS: Additional experiments (C1 glow discharge, B1 cavitation+ECR, D1 strain engineering) are also analyzed, showing that A1 is the primary test of fusion physics, while Track B provides the cleanest validation of the underlying heavy-fermion mechanism.

APPLICATIONS: The paper outlines long-term implications for compact aneutronic fusion (p–⁶Li, p–¹¹B) and potential applications to high-Isp propulsion systems. These concepts remain speculative and are only meaningful if A1 and/or Track B confirm the heavy-fermion effect.

SCIENTIFIC APPROACH: The DILITHIUM-2025 framework is not "cold fusion": it is a rigorous, physics-based, falsifiable experimental program designed to determine—quickly and unambiguously—whether heavy-fermion materials can significantly modify nuclear reaction rates and decay processes at low energies.

All simulations, figures, protocols, and analysis tools included here are released openly to encourage independent verification, collaboration, and scientific transparency.