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The influence of Multi-Step Sequential Decay on Isoscaling and Fragment Isospin Distribution in GEMINI Simulation |
| ZHOU Pei1,2, TIAN Wen-Dong1**, MA Yu-Gang1**, CAI Xiang-Zhou1, FANG De-Qing1, WANG Hong-Wei1
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1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, PO Box 800-204, Shanghai 201800
2Graduate School of the Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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ZHOU Pei, TIAN Wen-Dong, MA Yu-Gang et al 2011 Chin. Phys. Lett. 28 062101 |
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Abstract Extensive calculations on isoscaling behavior with the sequential-decay model GEMINI are performed for the mediate-heavy nuclei in the mass range A=110 and at excitation energies of up to 3 MeV per nucleon. Isoscaling can still be observed after entire−step decays are considered for the light products as in the only first-step decay process case. Comparison between the products after the first-step decay and the ones after entire-step decay demonstrates that multi-step secondary sequential decay strongly influences the isoscaling parameters α, β as well as the fragment isospin distribution. After entire−step decays, the isoscaling parameters α and β are decreased and the fragment isospin distribution can better reproduce the isospin distribution shape as the experimental data.
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| Keywords:
21.65.Ef
24.10.Pa
21.60.Ka
25.70.Gh
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Received: 01 February 2011
Published: 29 May 2011
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