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Chinese Physics C > 2017, Vol. 41 > Issue(12): 125102 DOI: 10.1088/1674-1137/41/12/125102

Resonant nuclear reaction23Mg (p,γ)24Al in strongly screening magnetized neutron star crust

  • 1.

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

  • Based on the relativistic theory of superstrong magnetic fields (SMF), by using three models those of Lai (LD), Fushiki (FGP), and our own (LJ), we investigate the influence of SMFs due to strong electron screening (SES) on the nuclear reaction 23Mg (p,γ) 24Al in magnetars. In a relatively low density environment (e.g., ρ 7<0.01) and 1 < B 12< 10 2, our screening rates are in good agreement with those of LD and FGP. However, in relatively high magnetic fields (e.g., B 12>10 2), our reaction rates can be 1.58 times and about three orders of magnitude larger than those of FGP and LD, respectively ( B 12, ρ 7are in units of 10 12G, 10 7g cm -3). The significant increase of strong screening rate can imply that more 23Mg will escape from the Ne-Na cycle due to SES in a SMF. As a consequence, the next reaction, 24Al (β +, ν) 24Mg, will produce more 24Mg to participate in the Mg-Al cycle. Thus, it may lead to synthesis of a large amount of A> 20 nuclides in magnetars.
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Jing-Jing Liu and Dong-Mei Liu. Resonant nuclear reaction 23Mg (p,γ) 24Al in strongly screening magnetized neutron star crust[J]. Chinese Physics C, 2017, 41(12): 125102. doi: 10.1088/1674-1137/41/12/125102
Jing-Jing Liu and Dong-Mei Liu. Resonant nuclear reaction 23Mg (p,γ) 24Al in strongly screening magnetized neutron star crust[J]. Chinese Physics C, 2017, 41(12): 125102. doi:10.1088/1674-1137/41/12/125102 shu
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Received: 2017-03-30
Revised: 2017-09-26
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    Supported by National Natural Science Foundation of China (11565020), the Counterpart Foundation of Sanya (2016PT43), the Special Foundation of Science and Technology Cooperation for Advanced Academy and Regional of Sanya (2016YD28), the Scientific Research Starting Foundation for 515 Talented Project of Hainan Tropical Ocean University (RHDRC201701) and the Natural Science Foundation of Hainan Province (114012)

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    Resonant nuclear reaction23Mg (p,γ)24Al in strongly screening magnetized neutron star crust

      Corresponding author:Jing-Jing Liu,
      Corresponding author:Dong-Mei Liu,
    • 1. College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya, Hainan 572022, China
    • Received Date:2017-03-30
    • Accepted Date:2017-09-26
    • Available Online:2017-12-05
    Fund Project:Supported by National Natural Science Foundation of China (11565020), the Counterpart Foundation of Sanya (2016PT43), the Special Foundation of Science and Technology Cooperation for Advanced Academy and Regional of Sanya (2016YD28), the Scientific Research Starting Foundation for 515 Talented Project of Hainan Tropical Ocean University (RHDRC201701) and the Natural Science Foundation of Hainan Province (114012)

      Abstract:Based on the relativistic theory of superstrong magnetic fields (SMF), by using three models those of Lai (LD), Fushiki (FGP), and our own (LJ), we investigate the influence of SMFs due to strong electron screening (SES) on the nuclear reaction23Mg (p,γ)24Al in magnetars. In a relatively low density environment (e.g.,ρ7<0.01) and 1 <B12< 102, our screening rates are in good agreement with those of LD and FGP. However, in relatively high magnetic fields (e.g.,B12>102), our reaction rates can be 1.58 times and about three orders of magnitude larger than those of FGP and LD, respectively (B12,ρ7are in units of 1012G, 107g cm-3). The significant increase of strong screening rate can imply that more23Mg will escape from the Ne-Na cycle due to SES in a SMF. As a consequence, the next reaction,24Al (β+, ν)24Mg, will produce more24Mg to participate in the Mg-Al cycle. Thus, it may lead to synthesis of a large amount ofA> 20 nuclides in magnetars.

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