The excitation function was measured from θlab = 10.4° to 57.4° in dissipative collision 27Al + 27Al with incident energy ranging from 114 to 123 MeV in step of 200 keV. The Angular-cross Correlation Functions (ACFs) of cross section fluctuation within large angle region were obtained through experiment for the first time. It is found that the angular coherent width is at least 40°. It is interesting that the ACFs is not simple bell shape but shows strong asymmetry. The over-all behavior is that ACF varies more quickly for the backward angles. Itis also noticed that the cross section fluctuation in the forward angle region (θcm < 70°) shows much stronger angular coherence than in the backward angle region (θcm > 70°). This angular dependence may be attributed to the coherent rotation effect of intermediate dinuclear system.

Measurement of angular cross-correlation of the cross section fluctuation in dissipative collision 27Al + 27Al

Amorini F.;Cabibbo M.;Cardella G.;
2000-01-01

Abstract

The excitation function was measured from θlab = 10.4° to 57.4° in dissipative collision 27Al + 27Al with incident energy ranging from 114 to 123 MeV in step of 200 keV. The Angular-cross Correlation Functions (ACFs) of cross section fluctuation within large angle region were obtained through experiment for the first time. It is found that the angular coherent width is at least 40°. It is interesting that the ACFs is not simple bell shape but shows strong asymmetry. The over-all behavior is that ACF varies more quickly for the backward angles. Itis also noticed that the cross section fluctuation in the forward angle region (θcm < 70°) shows much stronger angular coherence than in the backward angle region (θcm > 70°). This angular dependence may be attributed to the coherent rotation effect of intermediate dinuclear system.
2000
Angular coherent width
Angular crosscorrelation function
Cross section fluctuation
Dissipative heavy ion collision
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/609649
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