“…As discussed in the previous section, the fair agreement between the low dose rate yield of G(H,) = 7.0-7.9 (7,9,10) and the limiting yield of G(H,) = 7.9 + 0.3 with SF, at high dose rates suggests that there is no contribution from neutralization at low dose rates. This is confirmed by the absence of an effect of SF, and N 2 0 on G(H2) at low dose rates (1,7,9,10) and it is further confirmed by the limiting yield in multipulse irradiations at high dose rates where G(H,) x 8, and is unaffected by SF,, Figs. 3A and 3B.…”