Calculated yield of escaping 30–100 keV neutrons (before losses due to neutron decay) as a function of the accelerated-ion power-law spectral index for coronal accelerated-ion composition, accelerated ³He/⁴He = 0, and α/proton = 0.1. The yields are shown for two values of ψ_n, the angle between the neutron direction and the normal to the solar surface at the flare. Panel (a) is for several values of magnetic convergence δ, all for no PAS (﹩\lambda \to \infty ﹩). Panel (b) is for several values of PAS λ, all for δ = 0.2. All yields are normalized to N_p(>30 MeV) = 1.