Dose-Equivalent (behind shield)
Dose equivalent H · ICRP-60 Q(L) on unrestricted LET in water · thin water target, no self-shielding. Not effective dose E — that needs organ-level tissue weighting this model does not do.
The NASA-STD-3001 career limit is set in effective dose E; this bar plots dose equivalent H against it. Comparable in magnitude, not the same quantity.
Organ dose estimates (ICRP-60)
Computing organ depth-doses…
Approximate 1-D estimates: dose at 0.007 / 0.3 / 5 g/cm² water depth behind the shield stack (NASA shallow / eye / BFO depth-dose convention); Q(L) per ICRP-60. Bars compare the worst 30 days of absorbed dose with NASA-STD-3001 30-day limits (mGy-Eq; RBE not modeled). Chronic GCR sits far below these deterministic limits — they exist mainly for solar-particle events, which DOSEFIELD does not model. Refer to HZETRN/OLTARIS for organ-level mission planning.
Sensitivity — what moves this number
Each row: the mission total recomputed after the stated change, relative to the current configuration — read from the same curves the chart plots (no extra model runs, no approximations beyond the chart's own 1 g/cm² grid). Duration is exactly linear by model construction (constant GCR rate, no solar-cycle variation). Solar modulation W has no row because its effect requires a full recompute — drag the W slider to see it live.
Dose-Equivalent vs Shield Areal Density
Cumulative Dose Over Mission
Dose Rate Contribution by Ion Energy
Incident GCR spectrum (before shielding) · dose-equivalent contribution per decade of ion energy, dH/dlog₁₀T · updates with solar modulation W · its integral over the axis equals the free-space dose rate (verified to <0.01%)
Same Contribution, Behind the Shield
Residual field at the scoring point · dose-equivalent contribution per decade of residual energy, dH/dlog₁₀E_out · updates with shield material, areal density, solar modulation and nuclear mode.
Different abscissa from the panel above. That one is differential in the incident energy the ion arrives with; this one in the residual energy it still carries after crossing the shield — the variable the shielded dose integral is taken over. The two are separate physical quantities and are deliberately not drawn on a shared axis or re-projected into each other’s coordinates. Compare the shapes, not the abscissae point by point.
Validation Suite
Runs the live physics checks behind this model.
Automated self-checks · running…
Model invariants re-verified on every configuration change.
Physics invariants checked live in the worker: thick-shield dose reduction, solar-modulation monotonicity, dose–duration linearity, material ordering, unit consistency. The dot in the page corner is green only while all five hold.