Engine Parameters

Fraction of alphas reaching nozzle (open question — Sec 6.1)
Parametric Estimates
Analytical, from Martin (2026) Eqs. 6-11
Mirror Ratio (R): --
Plume Half-Angle: --
Dir. Efficiency (η_d): --
Total Efficiency (η_d × ηcap): --
Directed Power: --
Exhaust Velocity: --
Visualization
Particles: 0
Visual Plume Angle: --
Not a particle-tracing simulation. See paper Section 6 for validation requirements.
Show/hide equations
B(z) = B₀ / (1 + z/L_B)²
r_L = 0.24 / B  [m]  (Eq. 7)
ε = r_L / L_B  (Eq. 6)
R = B₀ · L_B / 2.4  (Sec 2.4)
θ = arcsin(1/√R)  (Eq. 9)
η_d = cos²(θ) × 0.85  (Eq. 10)
η_total = η_d × η_cap
v_e = 0.039c × √η_total  (Eq. 11)
P = rate × 8.7 MeV × η_total
2.9 MeV Alphas (Adiabatic)
Detached Alphas (Ballistic)
Neutralizing Electrons
50T Back Mirror (loss plug)
Magnetic Field Lines
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