Avalanche proton-boron fusion based on elastic nuclear collisions

Recent experiments done at Prague with the 600 J/0.2 ns PALS laser interacting with a layer of boron dopants in a hydrogen enriched target have produced around 10⁹ alphas. We suggest that these unexpected very high fusion reactions of proton with ¹¹B indicate an avalanche multiplication for the measured anomalously high nuclear reaction yields. This can be explained by elastic nuclear collisions in the broad 600 keV energy band, which is coincident with the high nuclear p-¹¹B fusion cross section, by the way of multiplication through generation of three secondary alpha particles from a single primarily produced alpha particle.