Image: Inhour curves for uranium-233, uranium-235 and plutonium-239

Description: Redrawn version of Fig. 6-3 in Duderstadt & Hamilton, Nuclear Reactor Analysis (1976), p. 247. Each of the three panels shows the asymptotic reactor period T (seconds, x-axis) against reactivity in dollars.

Curves were recomputed from data tabulated in the book: six-group half-lives, relative yields and total delayed yields vd from Table 2-3 (p. 64), thermal neutron yields nu from Fig. 2-20 (p. 61) with beta = vd/nu and decay constants lambda = ln2/T_half, evaluated with the inhour equation (Eq. 6-42, p. 244). Plotted with Matplotlib.
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