Relativistic Projectile Fragment Interactions: Anomalons

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Science  21 Dec 1984:
Vol. 226, Issue 4681, pp. 1425-1427
DOI: 10.1126/science.226.4681.1425


Interaction mean free paths are calculated for projectile fragments from relativistic heavy-ion interactions in emulsions and plastic. There are important discrepancies between emulsion results and those from other techniques. "Anomalous" secondaries (anomalons) may prove to be interpretable by conventional nuclear physics: short mean free paths may be due to convoys of collinear light fragments from peripheral interactions (for example, with neutrons) or from low-excitation particle-unbound fragments that decay in flight.