Inhomogeneous isospin distribution in the reactions of 28Si+112Sn and 124Sn at 30 and 50 MeV/nucleon

M. Veselsky, R. W. Ibbotson, R. Laforest, E. Ramakrishnan, D. J. Rowland, A. Ruangma, E. M. Winchester, E. Martin, S. J. Yennello

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Abstract

We have created quasiprojectiles of varying isospin via peripheral reactions of 28Si+112Sn and 124Sn at 30 and 50 MeV/nucleon. The quasiprojectiles have been reconstructed from completely isotopically identified fragments. The difference in N/Z of the reconstructed quasiprojectiles allows the investigation of the disassembly as a function of the isospin of the fragmenting system. The isobaric yield ratio 3H/3He depends strongly on N/Z ratio of quasiprojectiles. The dependences of mean fragment multiplicity and mean N/Z ratio of the fragments on N/Z ratio of the quasiprojectile are different for light charged particles and intermediate mass fragments. Observation of a different N/Z ratio of light charged particles and intermediate mass fragments is consistent with an inhomogeneous distribution of isospin in the fragmenting system.

Original languageEnglish
Article number041605
Pages (from-to)416051-416054
Number of pages4
JournalPhysical Review C - Nuclear Physics
Volume62
Issue number4
StatePublished - Oct 2000

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