Production of neutral pions in heavy-ion collisions at E/sub lab//A = 25 MeV
Journal Article
·
· Phys. Rev. C; (United States)
Inclusive production of neutral pions was observed at E/sub lab//A = 25 MeV in the reactions WO+Al,Ni +X. Neutral pions were detected by observing their two decay el rays in coincidence in an array of 20 Pb-glass Cerenkov-detector telescopes. An array of plastic Cerenkov detectors was added to the above array to tag and reject a significant cosmic-ray background. The observed cross sections are much larger than predicted by nucleon-nucleon collision or statistical models, even if cooperative action of target and projectile nucleons and cluster formation in the final channel are taken into account. This indicates the presence of a collective production mechanism.
- Research Organization:
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6248004
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:2; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
651425* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651625 -- Nuclear Properties & Reactions
A=59-89
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BOSONS
CHARGED-PARTICLE REACTIONS
COLLECTIVE MODEL
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
HADRONS
HEAVY ION REACTIONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESONS
METALS
MEV RANGE
MEV RANGE 100-1000
NICKEL
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
TARGETS
TRANSITION ELEMENTS
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651625 -- Nuclear Properties & Reactions
A=59-89
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BOSONS
CHARGED-PARTICLE REACTIONS
COLLECTIVE MODEL
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
HADRONS
HEAVY ION REACTIONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESONS
METALS
MEV RANGE
MEV RANGE 100-1000
NICKEL
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
TARGETS
TRANSITION ELEMENTS