PaperPanorama
FAQ

Nuclear Theory·nucl-th

Thursday·April 12, 2018

3 papers—2 primary·1 cross-listed

All3Primary2Cross-lists1
  1. 01

    Time-dependent method for many-body problems and its application to nuclear resonant systems

    Tomohiro Oishi · Lorenzo Fortunato

    The decay process of the schematic one-dimensional three-body system is considered. A time-dependent approach is used in combination with a one-dimensional three-body model, which is composed of a heavier core nucleus and two nucleons, with the aim of describing its evolution in two-nucleon emission. The process is calculated from the initial state, in which the three ingredient particles are confined. In this process, two different types of emission can be found: the earlier process includes the emission of spatially correlated two-nucleon pair, like a dinucleon, whereas, at a subsequent time, all the particles are separated from each other. The time-dependent method can be a suitable option to investigate the meta-stable and/or open-quantum systems, where the complicated many-body dynamics should necessarily be taken into account.

    nucl-thquant-phActa Phys.Polon.B(2018)·2 citations
  2. 02

    Two-Neutron Halo State of B Around MeV By A Three-Body Model

    Dong Bai🇨🇳 · Zhongzhou Ren🇨🇳 · Tiekuang Dong🇨🇳

    We investigate low-lying bound states of the neutron-rich nucleus B by assuming it is a three-body system made of an inert core B and two valence neutrons. The three-body wave functions are obtained using the Faddeev formalism. Special attention is paid to the excited state at MeV observed in the reaction, whose properties are less clear theoretically. In our three-body model, besides the ground state , a second state is discovered at around MeV, which might be identified with the excited state observed at MeV. We study this state in detail, which turns out to be a two-neutron halo state with a large matter radius fm.

    nucl-thCPC(2018)·1 citation
  3. 03

    Nuclear excitation by electron capture in optical-laser-generated plasmas

    Jonas Gunst · Yuanbin Wu · Christoph H. Keitel · Adriana Pálffy

    The process of nuclear excitation by electron capture in plasma environments generated by the interaction of ultra-strong optical lasers with solid-state samples is investigated theoretically. With the help of a plasma model we perform a comprehensive study of the optimal parameters for most efficient nuclear excitation and determine the corresponding laser setup requirements. We discern between the low-density plasma regime, modeled by scaling laws, and the high-density regime, for which we perform particle-in-cell calculations. As nuclear transition case study we consider the 4.85 keV nuclear excitation starting from the long-lived Mo isomer. Our results show that the optimal plasma and laser parameters are sensitive to the chosen observable and that measurable rates of nuclear excitation and isomer depletion of Mo should be already achievable at laser facilities existing today.

    ↳ physics.plasm-phnucl-thPRE(2018)·19 citations

Affiliations

first authorsco-authorsvia INSPIRE