Particle-particle correlations and lifetimes of composite nuclei: New tests for the evaporation model and for statistical equilibration

We present data for small-angle particle-particle correlations from the reactions 80, 140, 215, and 250 MeV {sup 16}O+{sup 27}Al{r arrow}{ital p}-{ital p} or {ital p}-{ital d}. The main features of these data are anticorrelations for small relative momenta ({le}25 MeV/{ital c}) that strengthen with...

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Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 1990-05, Vol.41 (5), p.1885-R1889
Main Authors: DeYoung, PA, Gelderloos, CJ, Kortering, D, Sarafa, J, Zienert, K, Gordon, MS, Fineman, BJ, Gilfoyle, GP, Lu, X, McGrath, RL, de Castro Rizzo DM, Alexander, JM, Auger, G, Kox, S, Vaz, LC, Beck, C, Henderson, DJ, Kovar, DG, Vineyard, MF
Format: Article
Language:English
Subjects:
651320 - Nuclear Properties & Reactions, A=6-19, Experimental
651420 - Nuclear Properties & Reactions, A=20-38, Experimental
ACCELERATORS
ALUMINIUM 27 TARGET
ATLAS SUPERCONDUCTING LINAC
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
CORRELATED-PARTICLE MODELS
EVAPORATION MODEL
HEAVY ION ACCELERATORS
HEAVY ION REACTIONS
INTERACTIONS
LIFETIME
LINEAR ACCELERATORS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
PAIRING INTERACTIONS
PARTICLE MODELS
STATISTICAL MODELS
TARGETS
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Summary:We present data for small-angle particle-particle correlations from the reactions 80, 140, 215, and 250 MeV {sup 16}O+{sup 27}Al{r arrow}{ital p}-{ital p} or {ital p}-{ital d}. The main features of these data are anticorrelations for small relative momenta ({le}25 MeV/{ital c}) that strengthen with increasing bombarding energy. Statistical model calculations have been performed to predict the mean lifetimes for each step of evaporative decay, and then simulate the trajectories of the particle pairs and the resulting particle correlations. This simulation accounts very well for the trends of the data and can provide an important new test for the hypothesis of equilibration on which the model is built.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.41.R1885