13 research outputs found
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Observation of anomalous reaction mean free paths of nuclear-projectile fragments in research emulsion from 2 A GeV heavy-ion collisions
From an analysis of 1460 projectile fragment collisions in nuclear research emulsion exposed to 2.1 A GeV /sup 16/O and 1.9 A GeV /sup 56/Fe at the Bevalac, evidence is presented for the existence of an anomalously short interaction mean free path of projectile fragments for the first several cm after emission. The result is significant to beyond the 3 standard deviation confidence level
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CHARACTERISTICS OF THE IONIZATION TRACKS AND INTERACTIONS OF ~ 100 A MeV 238U NUCLEI IN EMULSION
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CHARGE MEASUREMENTS OF STOPPING HIGH-Z NUCLEI (6 < Z < 92) IN NUCLEAR EMULSION
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ANGULAR CORRELATIONS BETWEEN PROJECILE AND TARGET FRAGMENTS EMITTED FROM NUCLEAR COLLISIONS OF 238 U AT 0.85 A Gev
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CHARGE MEASUREMENTS OF STOPPING HIGH-Z NUCLEI (6 < Z < 92) IN NUCLEAR EMULSION
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A METHOD FOR PRECISE CHARGE MEASUREMENTS OF RELATIVISTIC LIGHT NUCLEI, Z < 3, IN NUCLEAR TRACK EMULSION
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EVIDENCE FOR ANOMALOUS NUCLEI AMONG RELATIVISTIC PROJECTILE FRAGMENTS FROM HEAVY ION COLLISIONS AT BEVALAC ENERGIES
Two independent emulsion experiments using Bevalac beams of {sup 16}O and {sup 56}Fe at {approx}2 GeV/nucleon find with > 99.7% confidence that the reaction mean-free paths of projectile fragments, 3 {approx}< Z {approx}< 26, are shorter for a few centimeters after their emission than at larger distances, or than predicted from experiments on beam nuclei. This effect, which is enhanced in later generations of fragments, can be interpreted by the relatively rare occurrence of fragments that interact with an unexpectedly large cross section