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Nuclear Theory·nucl-th

Thursday·April 28, 2022

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 01

    [Submitted on 27 Apr 2022]

    Simulating fusion reactions from Coulomb explosions within a transport approach

    Zhe Zhu · Jun Xu · Guo-Qiang Zhang

    We have studied nuclear fusion reactions from the Coulomb explosion of deuterium clusters induced by high-intensity laser beams within a transport approach. By incorporating the D+D n + He channel as inelastic collisions based on the stochastic method, we have calibrated the neutron yield from the simulation in a box system with that from the reaction rate equation. After justifying the Coulomb explosion of a single cluster by comparing results with available theoretical limits, we have then investigated the dynamics from Coulomb explosions of systems with different cluster numbers and different deuteron numbers in clusters. We find that the kinetic energy spectrum of deuterons at the final stage is different from that when neutrons are abundantly produced, corresponding to significantly different reaction rates. We also extrapolate the neutron yield result from small systems to large systems based on an intuitive parameterized form and compare with the available experimental result. The present framework can be extended by incorporating more channels, and useful for further studies of nuclear fusion reactions in plasma systems at higher energies reached in more recent experiments.

    Comments:
    10 pages, 9 figures
    Subjects:
    Nuclear Theory (nucl-th); Plasma Physics (physics.plasm-ph)
    arXiv:
    2204.12677 [pdf]
    PRC(2022)·1 citation
  2. 02

    [Submitted on 27 Apr 2022]

    Ab initio studies of double Gamow-Teller transition and its correlation with neutrinoless double beta decay

    J. M. Yao🇨🇳 · I. Ginnett🇨🇦 · A. Belley🇨🇦 · T. Miyagi🇩🇪 · R. Wirth🇺🇸 · S. Bogner🇺🇸 · J. Engel🇺🇸 · H. Hergert🇺🇸 · J. D. Holt🇨🇦 · S. R. Stroberg🇺🇸

    We use chiral interactions and several {\em ab initio} methods to compute the nuclear matrix elements (NMEs) for ground-state to ground-state double Gamow-Teller transitions in a range of isotopes, and explore the correlation of these NMEs with those for neutrinoless double beta decay produced by the exchange of a light Majorana neutrino. When all the NMEs of both isospin-conserving and isospin-changing transitions from the {\em ab initio} calculations are considered, the correlation is strong. For the experimentally relevant isospin-changing transitions by themselves, however, the correlation is weaker and may not be helpful for reducing the uncertainty in the NMEs for neutrinoless double-beta decay.

    Comments:
    16 pages with 19 figures, Phys. Rev. C (in press)
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2204.12971 [pdf]
    PRC(2022)·28 citations

Affiliations

first authorsco-authorsvia INSPIRE