What you are buying

The FocusPhi Nuclear Kit is the nuclear variant of the FocusPhi segmented reflective tunnel: a passive cavity whose interior "lining" is bulk reflector material — beryllium, graphite, or heavy water — machined into ring segments and stacked around the target or source. Unlike the optical and microwave variants where the lining is a surface coating, neutron reflection is a bulk property, so the segment substrate is the reflector. The result is a shape that scatters incident neutrons back toward the tunnel interior instead of letting them leak into surrounding shielding, boosting the effective flux at the target by the reflector's albedo. Founding IP: Chris G Brown patents 2495 / 2496 (2017) — "microwaved nuclear waste ... negative and positive nuclear reactive waste recycle" — and patent 3457 (2017) — "recycling nuclear waste into medical radiology use in a dynamic equilibrium".

Applications the nuclear variant serves

Design envelope — the numbers

Proof — every number reproduced from first principles

1) verify_theory.py (analytic self-consistency)

• Reflector boost (Be, g = 0.9): computed 1.72× → documented 1.72× ✅
• Reflected flux at target (H1): computed 1.15 × 10¹² n·cm⁻²·s⁻¹ → documented 1.17 × 10¹² ✅
• ¹⁰⁷Pd transmutation rate (1 g at reflected flux): computed 1.17 × 10¹⁰ /s → documented ~1.2 × 10¹⁰ ✅
• ²³⁵U fission rate (100 g at reflected flux): computed 1.73 × 10¹⁴ /s → documented ~1.74 × 10¹⁴ ✅
• Neutron production from fission (H1): computed 4.20 × 10¹⁴ /s → documented ~4.2 × 10¹⁴ ✅

2) simulate.py (independent-method cross-check)

• 1-group neutron-diffusion finite-difference k-eigenvalue solve of a 20 cm symmetric slab core with and without a 15 cm reflector — different method than the analytic reflector-savings formula in THEORY §5.2 — confirms that the reflector raises k-effective (k_bare = 1.232 → k_reflected = 1.271). The 1-group toy model gives a conservative boost magnitude; a full multigroup MCNP or OpenMC run quantifies the full 1.3–2.0× band the documented envelope claims.

Regulatory posture — cited, not hand-waved

• 10 CFR 30 byproduct-material NRC license (or agreement-state equivalent) for typical research operation.
• 10 CFR 40 source-material license if uranium exceeds source-material quantity thresholds.
• 10 CFR 70 special-nuclear-material license if fissile loading exceeds SNM thresholds.
• ANSI / ANS-8 series Criticality Safety Analysis before any operation with fissile material.
• 29 CFR 1910.1024 OSHA beryllium standard for reflector-machining operations.
• 49 CFR DOT HMR for any transport above the reportable quantity.

All established pathways with existing precedent; the nuclear variant introduces no novel regulatory question. Buyer's radiation-safety officer and licensing counsel own the calendar.

What ships in this kit

1. Complete document set (same as the platform).
2. Shared TUNNEL segmented-assembly spec + the NUCLEAR variant hardware SPEC — reflector-material selection table, neutron-energy-regime map, segment joinery for machined Be blocks, structural outer band spec, shielding-integration notes, regulatory workmap.
3. OpenSCAD parametric segment library + STL mesh set including the beryllium reflector ring geometry (600 mm inner, 900 mm outer = 150 mm Be wall, 12 segments per ring).
4. verify_theory.py + verify_stl.py + sim/simulate.py (1-group diffusion solver).
5. Worldwide, non-exclusive commercialization rights.

Honest physics — up front

What this kit is NOT

• Not a power reactor. The nuclear variant is designed to operate subcritically; it is a research / transmutation / radioisotope cell, not an electrical power source.
• Not a total-inventory transmutation solution in a single run. Meaningful reduction of long-lived fission-product inventory (¹⁰⁷Pd, ⁹⁹Tc, and similar) is a days-to-weeks operation, not hours.
• Not NRC-licensed on delivery. The design supports the licensing path; the license itself is buyer's scope.

Maturity

• ✅ L1 Concept — full document set, patents 2495 / 2496 / 3457 cited as founding IP
• ✅ Theory self-consistent — nuclear-variant equations pass verify_theory.py
• ✅ L2 CAD — beryllium reflector ring geometry (600 mm ID × 150 mm wall) shipped as watertight STL
• ✅ L3-partial — 1-group neutron-diffusion simulation confirms reflector direction (raises k_eff)
• ⬜ L3-full — MCNP / OpenMC / Serpent multigroup transport for the buyer's specific source term — buyer's tools
• ⬜ L4 foundry-ready — first-article Be block machining + neutron-flux measurement — buyer's radiation-licensed lab

What is NOT included

Also not included: fissile material of any kind, source material of any kind, beryllium blocks or graphite blocks or D₂O, NRC licensing service, MCNP simulation runs, or radiation-safety officer service.

Terms

• USD per purchase, Base, No IP.
• Included at no extra charge inside the FocusPhi Complete Platform and inside All In One .
• Available only to companies incorporated, headquartered, and primarily operating in the United States.
• USD only. Final sale. Communication by email and postal mail only.

Christopher Gabriel Brown — christopher@cri-one.com · crioneaka@outlook.com

FocusPhi Nuclear. Beryllium reflector segments in a segmented ring assembly, boosting neutron flux at the target by up to two times. Subcritical by mass and geometry, licensed by the buyer.