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Nuclear Theory·nucl-th

Friday·July 12, 2019

9 papers—2 primary·7 cross-listed

All9Primary2Cross-lists7
  1. 01

    [Submitted on 10 Jul 2019]

    Transformations of mass/charges fission fragments spectra with consideration the postfission emission of nuclear particles: 232Th

    V. T. Maslyuk · O. O. Parlag · M. I. Romanyuk · O. I. Lendyel · O. M. Pop

    The possibilities of the proposed statistical approach are shown in the task of investigating the post-scission transformation of mass and charge yields of fission fragments with considering the emission of different length of chains of elementary particles as the beta particles and neutrons fission. Using as the example the 232 Th isotope, which is located on the border between pre-actinide and actinides nuclei, the changes in the topology of fission fragments yields, the role of emission of nuclear particles in the competition of symmetric and asymmetric modes in fission processes are investigated. The proposed method allows one to determine the most probable two fission's fragments clusters, obtained in considering the different chain's length of emitted nuclear particles and the parameters of their stability. All these results are essential when interpreting the experimental data.

    Comments:
    9 pages, 2 figures, 2 tables
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1907.04922 [pdf]
    0 citations
  2. 02

    [Submitted on 11 Jul 2019]

    Non-parametric Bayesian approach to extrapolation problems in configuration interaction methods

    Sota Yoshida

    We propose a non-parametric extrapolation method based on constrained Gaussian processes for configuration interaction methods. Our method has many advantages: (i) applicability to small data sets such as results of {\it ab initio} methods, (ii) flexibility to incorporate constraints, which are guided by physics, into the extrapolation model, (iii) providing predictions with quantified extrapolation uncertainty, etc. In the present study, we show an application to the extrapolation needed in full configuration interaction method as an example.

    Comments:
    11 pages and 12 figures
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    1907.04974 [pdf]
    PRC(2020)·16 citations

Affiliations

first authorsco-authorsvia INSPIRE