Abstract
A new approach based on the collective tube model is developed for understanding momentum transfer to target fragments in high-energy hadron-nucleus collisions. Collectivity manifests itself in an enhanced dependence of momentum transfer on projectile energy, consistent with experimental results for deep-spallation reactions. The effective target for /sup 149/Tb production from /sup 197/Au by high-energy protons is deduced to consist of 3.1 +- 0.4 nucleons. Extensions of this model to nucleus-nucleus collisions are discussed.
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