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Relative reduction r(H; m, K) of strayfield intensity (equation (3.7)) produced by a magnet at a free-radical reaction site on moving from θ0 = 180° − η to 180° (compare figure 3). The magnetic moment of the magnet is fixed (25kT/Oe); the values of K range from 5 to 12.5kT/rad (colours). Dashed lines, r(H; m, K) calculated from equations (D 7) and (D 8) (see also Binhi 2006). Solid lines, r(H; m, K) calculated from equation (D 9).
