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Nuclear Theory·nucl-th

Wednesday·April 10, 2019

10 papers—5 primary·5 cross-listed

All10Primary5Cross-lists5
  1. 01

    [Submitted on 8 Apr 2019]

    Comment on the relation between the collinear tripartition and the collective model of the atomic nuclei

    F. F. Karpeshin

    It is shown that the collinear tripartition in the case of spontaneous fission of 252Cf generically follows the principles of the collective Bohr's model. Qualitative consideration is supported by the numerical trajectory calculations.

    Comments:
    The discussed material was presented at the "Nucleus-2016" International Conference, 11-14 October 2016, Sarov, Russia, 25th International Seminar on Interaction of Neutrons with Nuclei (ISINN-25), Dubna, Russia, May 22-26, 2017, and "Nucleus-2017",September 12-15, 2017, Almaty, Kazakhstan. 5 pages
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    1904.04372 [pdf]
    0 citations
  2. 02

    [Submitted on 9 Apr 2019]

    Non-relativistic expansion of Dirac equation with spherical scalar and vector potentials by similarity renormalization group

    Yixin Guo · Haozhao Liang

    By following the conventional similarity renormalization group (SRG) expansion of the Dirac equation developed in [J.-Y. Guo, Phys. Rev. C \textbf{85}, 021302 (2012)], we work out the analytic expression of the order and verify the convergence of this method. As a step further, the reconstituted SRG method is proposed by using the re-summation technique. The speed of convergence of the reconstituted SRG becomes much faster than the conventional one, and the single-particle densities with the reconstituted SRG are also almost identical to the exact values.

    Comments:
    10 pages, 3 figures, and 8 tables
    Subjects:
    Nuclear Theory (nucl-th); Mathematical Physics (math-ph); math.MP (math.MP); Quantum Physics (quant-ph)
    arXiv:
    1904.04418 [pdf]
    PRC(2019)·17 citations
  3. 03

    [Submitted on 9 Apr 2019]

    Polarization observables for elastic electron scattering off a moving nucleon

    H. Arenhövel

    General expressions for all parity-conserving polarization observables of elastic electron-nucleon scattering in the one-photon exchange approximation are derived for a general frame of reference, i.e.\ not assumming scattering off a nucleon at rest and not specializing to a specific system of coordinates. Essentially, the given expressions are also valid for the inverse process, i.e.\ nucleon scattering off electrons.

    Comments:
    14 pages
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1904.04515 [pdf]
    PRC(2019)·5 citations
  4. 04

    [Submitted on 9 Apr 2019]

    A three-body calculation of incoherent photoproduction on a deuteron

    A. Fix · H. Arenhövel

    Incoherent photoproduction on a deuteron in the region is treated in a three-body scattering approach using separable two-body interactions. Results are presented for total and differential cross sections. It turns out that the role of higher order terms beyond the first order in the multiple scattering series is insignificant, and their inclusion cannot explain the existing discrepancy between theory and experiment.

    Comments:
    18 pages, 9 figures, version accepted for Phys. Rev. C, additional information on inelastic pion-deuteron scattering
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1904.04557 [pdf]
    PRC(2019)·15 citations

Affiliations

first authorsco-authorsvia INSPIRE