Effect of fragment emission time on the temperature of momentum quadrupole fluctuations

Fan Zhang, Cheng Li, Long Zhu, Hang Liu, and Feng-Shou Zhang
Phys. Rev. C 91, 034617 – Published 27 March 2015

Abstract

A systematic study of a momentum quadrupole fluctuation thermometer has been presented for heavy-ion collisions at 35 MeV/nucleon via the isospin-dependent quantum molecular dynamics model accompanied by the statistical decay model GEMINI. It is determined that the fragment momentum fluctuation temperature indeed reflects the average temperature of the excitation source in the fragmentation process and the secondary decay. We find that the divergence between the initial temperature and the final measurement temperature is different for protons, tritons, and He3. The maximum divergence of the temperature is about 20% probed by protons. As an example of using protons as the probe particle, we find that the isospin dependence of the nuclear temperature is consistent between the initial temperature and the final measurement temperature.

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  • Received 22 December 2014

DOI:https://doi.org/10.1103/PhysRevC.91.034617

©2015 American Physical Society

Authors & Affiliations

Fan Zhang1,2, Cheng Li1,2, Long Zhu1,2, Hang Liu3, and Feng-Shou Zhang1,2,4,*

  • 1The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
  • 2Beijing Radiation Center, Beijing 100875, China
  • 3Texas Advanced Computing Center University of Texas at Austin, Texas 78758, USA
  • 4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China

  • *Corresponding author: fszhang@bnu.edu.cn

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Vol. 91, Iss. 3 — March 2015

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