Approximate Methods to Extract Symmetry Energy Using Isobaric Yield Ratio Methods

PU Jie; QIAO Qin-peng; WEI Hui-ling; WANG Shan-shan; MA Chun-wang; ZHANG Tong-lin

doi:10.11804/NuclPhysRev.29.02.129

PU Jie, QIAO Qin-peng, WEI Hui-ling, WANG Shan-shan, MA Chun-wang, ZHANG Tong-lin. Approximate Methods to Extract Symmetry Energy Using Isobaric Yield Ratio Methods[J]. Nuclear Physics Review, 2012, 29(2): 129-132. DOI: 10.11804/NuclPhysRev.29.02.129

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Approximate Methods to Extract Symmetry Energy Using Isobaric Yield Ratio Methods

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In the framework of the modified Fisher model， correlations between the symmetryenergy coefficient in semiclassical mass formula to temperature (a_sym/T) and the isobaric yield ratio in Heavyion collisions are established. a_sym/Tof neutronrich fragments are extracted using these correlations. It is found that the Coulombenergy term has little effect on a_sym/T of fragments， while the reference isobars adopted have great influence on the extracted a sym/T of fragments.

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Approximate Methods to Extract Symmetry Energy Using Isobaric Yield Ratio Methods

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