Composite particle production in intermediate-energy heavy ion collisions
Experimental and theoretical studies of composite fragment production in intermediate energy heavy ion collisions presented. Inclusive yield measurements were undertaken to differentiate between the various theoretical approaches. The reaction /sup 14/N + /sup nat/Ag at incident energies of 20A, 30 A, and 35 A MeV leading to complex fragments in the range 3 less than or equal to 7 less than or equal to 24 was examined. Theoretical studies had suggested that the production cross sections of such complex fragments might provide evidence for the occurrence of a liquid-gas phase transition in nuclear systems. Since other reactions mechanisms also lead to complex fragment production, these processes were also investigated. The experimental data indicate that further experiments are required before a definitive conclusion can be reached regarding the occurrence of critical phenomena such as predicted in the phase transition theories. Results suggest that further experiments on heavy ion reactions are necessary in the energy range 40A MeV less than or equal to E/sub inc/ less than or equal to 100A MeV.
- Research Organization:
- Michigan State Univ., East Lansing (USA)
- OSTI ID:
- 6630985
- Country of Publication:
- United States
- Language:
- English
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653002 -- Nuclear Theory-- Nuclear Matter
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
HEAVY ION REACTIONS
INFORMATION
MATTER
METALS
MEV RANGE
MEV RANGE 100-1000
NITROGEN 14 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR MATTER
NUCLEAR REACTIONS
NUMERICAL DATA
PHASE TRANSFORMATIONS
SILVER
SPALLATION
TRANSITION ELEMENTS