Multicoincidence study of fragmentation events at small angles from /sup 20/Ne induced reactions at 35 MeV/nucleon
Targets of /sup 12/C and /sup 27/Al have been bombarded by 35 MeV/nucleon /sup 20/Ne ions. Inside a cone of +- 10/sup 0/ around the beam axis, outgoing protons and ..cap alpha.. particles were detected by an arrangement of 18 scintillators in coincidence with particles of charge Z = 5--11 emerging at 2/sup 0/. At this energy the identified reaction mechanisms differ significantly from the ones observed in the 10--15 MeV/nucleon region. Important energy transfer of around 50 MeV to the target-like residues is observed. For the coincident oxygen-..cap alpha.. events, in addition to the well-known sequential decay mechanism of the projectile, about 40% of the events are attributed to another mechanism producing oxygen ions narrowly peaked near the beam velocity. Among the other reaction channels, cases are present which can be interpreted in terms of sequential decay alone, as well as others where admixtures of different processes play a role.
- Research Organization:
- Hahn-Meitner-Institut fuer Kernforschung Berlin, D-1000 Berlin 39, West Germany
- OSTI ID:
- 6386598
- Journal Information:
- Phys. Rev. C; (United States), Vol. 32:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM 27 TARGET
NEON 20 REACTIONS
CARBON 12 TARGET
FRAGMENTATION
ALPHA PARTICLES
ANGULAR DISTRIBUTION
COINCIDENCE SPECTROMETRY
CROSS SECTIONS
ENERGY SPECTRA
EXPERIMENTAL DATA
MEV RANGE 100-1000
PROTONS
SCINTILLATION COUNTERS
BARYONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HEAVY ION REACTIONS
INFORMATION
MEASURING INSTRUMENTS
MEV RANGE
NUCLEAR REACTIONS
NUCLEONS
NUMERICAL DATA
RADIATION DETECTORS
SPECTRA
TARGETS
651325* - Nuclear Properties & Reactions
A=6-19
Experimental- Nuclear Reactions & Scattering- (-1987)