PaperPanorama

Nuclear Theory·nucl-th

Friday·February 19, 2016

4 papers2 primary·2 cross-listed

  1. 01

    [Submitted on 18 Feb 2016]

    Cooperative internal conversion process by proton exchange

    Péter Kálmán · Tamás Keszthelyi

    A generalization of the recently discovered cooperative internal conversion process is investigated theoretically. In the cooperative internal conversion process by proton exchange investigated the coupling of bound-free electron and proton transitions due to the dipole term of their Coulomb interaction permits cooperation of two nuclei leading to proton exchange and an electron emission. General expression of the cross section of the process obtained in the one particle spherical nuclear shell model is presented. As a numerical example the cooperative internal conversion process by proton exchange in is dealt with. As a further generalization, cooperative internal conversion process by heavy charged particle exchange and as an example of it the cooperative internal conversion process by triton exchange is discussed. The process is also connected to the field of nuclear waste disposal.

    Comments:
    arXiv admin note: text overlap with arXiv:1511.07164, arXiv:1502.01474
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1602.05774 [pdf]
    0 citations
  2. 02

    [Submitted on 18 Feb 2016]

    MAID-2015: update with new data and new resonances

    V.L. Kashevarov · L. Tiator · M. Ostrick

    Recent data for and photoproduction on protons obtained by the A2 Collaboration at MAMI are presented. The total cross section for photoproduction demonstrates a cusp at the energy corresponding to the threshold. The new data and existing data from GRAAL, CBELSA/TAPS, and CLAS collaborations have been analyzed by an expansion in terms of associated Legendre polynomials. %A Legendre decomposition shows the sensitivity to small partial-wave contributions. The isobar model MAID updated with channel and new resonances have been used to fit the new data. The new solution MAID-2015 reasonably good describes the data in the photon beam energy region up to 3.7 GeV.

    Comments:
    6 pages, 6 figures, Mini-Workshop "Exploring Hadron Resonances", Bled, Slovenia, July 5-11, 2015
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    1602.05820 [pdf]
    Bled Workshops Phys.(2015)·16 citations

Affiliations

first authorsco-authorsvia INSPIRE