Wide angle emission of heavy fragments in relativistic heavy ion collisions and some open problems

Interactions of relativistic heavy ions in thick heavy element targets and some unresolved problems

“…This result has been experimentally conˇrmed in studies using nuclear emulsions exposed to relativistic heavy ions [21]. Studies using solid-state-nuclear-track detectors (SSNTD) gave additional experimental conˇrmation of this claim [5]. As the excitation function for the production of 24 Na in thin Cu targets is well known [2,6,21], it is possible to calculate the R …”

“…It has been shown that alphas or larger particles can be excluded from inducing the observed effect [5,21,32]. This phenomenon of excessive production of products with large ΔA constitutes another and rather severe aspects of unresolved problem as this effect is most likely due to elementary particles like protons, neutrons, or even pions.…”