Non-statistical fluctuations for deep inelastic processes in 27Al + 27Al

Details Non-statistical fluctuations for deep inelastic processes in 27Al + 27Al Non-statistical fluctuations for deep inelastic processes in 27Al + 27Al

2005-01-06

arxiv.org/abs/nucl-ex/0501003v1

Phys.Rev. C74 (2006) 024601

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 4 figures, 2 tables

Scientific paper

10.1103/PhysRevC.74.024601

The excitation functions for different fragments produced in the 27Al + 27Al dissipative collisions have been measured in steps of 250 keV in the energy range 122 - 132 MeV. Deep inelastic processes have been selected by integrating events over a total kinetic energy loss window of 12 MeV between 20 and 32 MeV. Large fluctuations have been observed in all the studied excitation functions. Non-satistical origin of these fluctuations is confirmed by large channel cross correlations coefficients. Energy autocorrelation function of cross section excitation function presents damped oscillation structure as predicted for the case when a di-nuclear system with a lifetime similar with its revolution period is formed. The periodicity of the energy autocorrelation function is used to obtain information on the deformation of the 27Al + 27 Al di-nucleus.

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