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Chinese Physics C> 2017, Vol. 41> Issue(9) : 095101 DOI: 10.1088/1674-1137/41/9/095101

Strongly screening electron capture for nuclides 52, 53, 59, 60Fe by the Shell-Model Monte Carlo method in pre-supernovae

  • 1.

      College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya 572022, China

  • 2.

      Department of Astronomy, Nanjing University, Nanjing, Jiangshu 210000, China

  • The death of massive stars due to supernova explosions is a key ingredient in stellar evolution and stellar population synthesis. Electron capture (EC) plays a vital role in supernova explosions. Using the Shell-Model Monte Carlo method, based on the nuclear random phase approximation and linear response theory model for electrons, we study the strong screening EC rates of 52, 53, 59, 60Fe in pre-supernovae. The results show that the screening rates can decrease by about 18.66%. Our results may become a good foundation for future investigation of the evolution of late-type stars, supernova explosion mechanisms and numerical simulations.
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Jing-Jing Liu, Qiu-He Peng and Dong-Mei Liu. Strongly screening electron capture for nuclides 52, 53, 59, 60Fe by the Shell-Model Monte Carlo method in pre-supernovae[J]. Chinese Physics C, 2017, 41(9): 095101. doi: 10.1088/1674-1137/41/9/095101
Jing-Jing Liu, Qiu-He Peng and Dong-Mei Liu. Strongly screening electron capture for nuclides 52, 53, 59, 60Fe by the Shell-Model Monte Carlo method in pre-supernovae[J]. Chinese Physics C, 2017, 41(9): 095101.  doi: 10.1088/1674-1137/41/9/095101 shu
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Received: 2017-02-13
Revised: 2017-04-24
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    Supported by National Natural Science Foundation of China (11565020), Counterpart Foundation of Sanya (2016PT43), Special Foundation of Science and Technology Cooperation for Advanced Academy and Regional of Sanya (2016YD28), Scientific Research Staring Foundation for 515 Talented Project of Hainan Tropical Ocean University (RHDRC201701) and Natural Science Foundation of Hainan Province (114012)

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Strongly screening electron capture for nuclides 52, 53, 59, 60Fe by the Shell-Model Monte Carlo method in pre-supernovae

    Corresponding author: Jing-Jing Liu,
    Corresponding author: Dong-Mei Liu,
  • 1.  College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya 572022, China
  • 2.  Department of Astronomy, Nanjing University, Nanjing, Jiangshu 210000, China
  • Received Date: 2017-02-13
  • Accepted Date: 2017-04-24
  • Available Online: 2017-09-05
Fund Project:  Supported by National Natural Science Foundation of China (11565020), Counterpart Foundation of Sanya (2016PT43), Special Foundation of Science and Technology Cooperation for Advanced Academy and Regional of Sanya (2016YD28), Scientific Research Staring Foundation for 515 Talented Project of Hainan Tropical Ocean University (RHDRC201701) and Natural Science Foundation of Hainan Province (114012)

Abstract: The death of massive stars due to supernova explosions is a key ingredient in stellar evolution and stellar population synthesis. Electron capture (EC) plays a vital role in supernova explosions. Using the Shell-Model Monte Carlo method, based on the nuclear random phase approximation and linear response theory model for electrons, we study the strong screening EC rates of 52, 53, 59, 60Fe in pre-supernovae. The results show that the screening rates can decrease by about 18.66%. Our results may become a good foundation for future investigation of the evolution of late-type stars, supernova explosion mechanisms and numerical simulations.

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