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Multiple choice
An electron (m=9.109×10−31m = 9.109\times10^{-31} kg) tunnels through a rectangular barrier of height ΔV=1.0\Delta V = 1.0 eV and width a=0.5a = 0.5 nm. In the thick-barrier approximation the transmission is T≈e−2κaT \approx e^{-2 \kappa a} with κ=2mΔV/ℏ\kappa = \sqrt{2 m \Delta V}/\hbar (ℏ=1.0546×10−34\hbar = 1.0546\times10^{-34} J·s, 11 eV =1.602×10−19= 1.602\times10^{-19} J). What is TT?