4.5 Article

Observing the ping-pong modality of the isospin degree of freedom in cluster emission from heavy-ion reactions

Journal

PHYSICAL REVIEW C
Volume 107, Issue 4, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.107.L041601

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Thermodynamic and chemical two-body correlations of isotope-resolved clusters were measured in 86Kr + 208Pb reactions at 25 MeV/u. Analysis of the yield and kinetic variables of A = 3 isobars were done in coincidence with intermediate mass fragments of 6 A 11. The yield ratios of t/3He correlated reversely with the neutron-to-proton ratio N/Z of the intermediate mass fragments, showing the ping-pong modality of the emitted particles' N/Z. The comparison to transport model calculations was discussed.
Thermodynamic and chemical two-body correlations of the isotope-resolved clusters are measured in 86Kr + 208Pb reactions at 25 MeV/u. The yield and kinetic variables of the A = 3 isobars are analyzed in coincidence with the intermediate mass fragments of 6 A 11. While the velocity spectra of both t and 3He exhibit scaling behavior over the type of the intermediate mass fragments, the yield ratios of t/ 3He correlate reversely to the neutron-to-proton ratio N/Z of the latter, showing the ping-pong modality of the N/Z of the emitted particles. The commonality that the N/Z of the residues keeps the initial system value is extended to the cluster emission in heavy ion reactions. The comparison to transport model calculations to the data is discussed.

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