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Chinese Physics C > 2025, Vol. 49 > Issue(9): 094105 DOI: 10.1088/1674-1137/ade12b

Effect of electron–electron interaction on pair production in supercritical collisions of highly charged ions

  • 1.

    Department of Physics, St. Petersburg State University, 7-9 Universitetskaya nab., St. Petersburg 199034, Russia

  • 2.

    Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Center "Kurchatov Institute", Orlova roscha 1, 188300 Gatchina, Leningrad region, Russia

  • 3.

    Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

  • The effect of electron-electron interaction on positron emission in supercritical collisions of highly charged ions is studied within the monopole approximation using the time-dependent density functional theory and time-dependent Hartree–Fock–Slater methods. Positron production probabilities and energy spectra are calculated for U–U, U–Cm, and Cm–Cm collision systems, considering both bare nuclei and highly charged ions with partially filled electron shells. The results indicate that the screening of the nuclear potential by electrons as well as Pauli blocking substantially reduce positron production and suppress the characteristic signatures of spontaneous vacuum decay, previously found in collisions of bare nuclei.
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N. K. Dulaev, D. A. Telnov, R. V. Popov, V. M. Shabaev, Y. S. Kozhedub, X. Ma, I. A. Maltsev, A. D. Mironov and I. I. Tupitsyn. The influence of electron–electron interaction on pair production in supercritical collisions of highly charged ions[J]. Chinese Physics C. doi: 10.1088/1674-1137/ade12b
N. K. Dulaev, D. A. Telnov, R. V. Popov, V. M. Shabaev, Y. S. Kozhedub, X. Ma, I. A. Maltsev, A. D. Mironov and I. I. Tupitsyn. The influence of electron–electron interaction on pair production in supercritical collisions of highly charged ions[J]. Chinese Physics C. doi:10.1088/1674-1137/ade12b shu
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Received: 2025-03-31
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