Thin the barrier or raise the energy and watch the transmission jump
Transmission T2.4%
Reflection R97.6%
RegimeTunneling (E < V₀)
Decay constant5.12 nm⁻¹
Width in de-Broglie waves0.41 λ
de-Broglie wavelength1.23 nm
Transmission T against barrier width on a log scale — the near-straight fall is the exponential suppression. The amber dot is your current setting.