A5079944601- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Astronomical and nuclear sciences
- Advanced Chemical Physics Studies
- Nuclear Physics and Applications
- High-pressure geophysics and materials
- Quantum, superfluid, helium dynamics
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Quantum chaos and dynamical systems
- Advanced NMR Techniques and Applications
- Astro and Planetary Science
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
- Hydrocarbon exploration and reservoir analysis
- Cold Fusion and Nuclear Reactions
- Rare-earth and actinide compounds
- Radioactive Decay and Measurement Techniques
Northwest University
2025
Nanjing University
2015-2024
Institute of Acoustics
2013-2019
University of Regina
2006-2019
Institute of Theoretical Physics
2015
Chinese Academy of Sciences
2015
Université Laval
2013-2015
Kavli Institute for Theoretical Sciences
2009-2014
University of Delaware
2010-2014
Nanjing University of Science and Technology
2014
The $^{1}\mathrm{H}(e,{e}^{\ensuremath{'}}{\ensuremath{\pi}}^{+})n$ cross section was measured at four-momentum transfers of ${Q}^{2}=1.60$ and $2.45\text{ }\text{ }{\mathrm{GeV}}^{2}$ an invariant mass the photon nucleon system $W=2.22\text{ }\mathrm{GeV}$. charged pion form factor (${F}_{\ensuremath{\pi}}$) extracted from data by comparing separated longitudinal electroproduction to a Regge model prediction in which ${F}_{\ensuremath{\pi}}$ is free parameter. results indicate that deviates...
In view of the fact that $\ensuremath{\alpha}$ decay and cluster radioactivity are physically analogical processes, we propose a general formula half-lives energies for radioactivity. This new is directly deduced from WKB barrier penetration probability with some approximations. It not only simple in form easy to see physical meanings but also shows excellent agreement experimental values. Moreover, difference between two sets parameters separately describe small. Therefore, use one set...
A global calculation of favored \ensuremath{\alpha}-decay half-lives both even-$A$ and odd-$A$ deformed nuclei is carried out in the framework a version density-dependent cluster model (DDCM). The influence nuclear deformation on taken into account DDCM. microscopic potential between spherical \ensuremath{\alpha} particle daughter nucleus evaluated numerically from double-folding by multipole expansion method. orientation dependence \ensuremath{\alpha}-core analyzed discussed. formulas DDCM...
The charged pion form factor, ${F}_{\ensuremath{\pi}}({Q}^{2})$, is an important quantity that can be used to advance our knowledge of hadronic structure. However, the extraction ${F}_{\ensuremath{\pi}}$ from data requires a model ${}^{1}\mathrm{H}(e,{e}^{'}{\ensuremath{\pi}}^{+})n$ reaction and thus inherently dependent. Therefore, detailed description factor electroproduction obtained recently at Jefferson Lab presented, with particular focus given dominant uncertainties in this procedure....
Experimental data of complex cluster radioactivity $(^{14}\mathrm{C}\text{--}^{34}\mathrm{Si})$ are systematically analyzed and investigated with different models. The half-lives well reproduced by a new formula between decay energies microscopic density-dependent model the renormalized M3Y nucleon-nucleon interaction. can be considered as natural extension both Geiger-Nuttall law Viola-Seaborg from simple $\ensuremath{\alpha}$ to where kinds clusters emitted. It is useful for...
The \ensuremath{\alpha}-decay half-lives of deformed nuclei are investigated in a new version the density-dependent cluster model. By multipole expansion method, deformation- and orientation-dependent double-folding potential is derived to calculate width through Coulomb barrier. We perform systematic calculations for ground-state \ensuremath{\alpha} transitions even-even with $Z=52\ensuremath{-}104$. theoretical results good agreement experimental data. This is, our knowledge, first...
Based on the Hugenholtz--Van Hove theorem, it is shown that both symmetry energy $E$${}_{\mathrm{sym}}(\ensuremath{\rho})$ and its density slope $L(\ensuremath{\rho})$ at normal ${\ensuremath{\rho}}_{0}$ are completely determined by nucleon global optical potentials. The latter can be extracted directly from nucleon-nucleus scatterings, ($p,n$) charge-exchange reactions, single-particle levels of bound states. Averaging all phenomenological isovector potentials constrained world data...
We systematically investigate the $\ensuremath{\alpha}$-decay and spontaneous fission half-lives for heavy superheavy nuclei with proton number $Z\ensuremath{\geqslant}90$. The are obtained by deformed version of density-dependent cluster model (DDCM). In DDCM, microscopic potential between $\ensuremath{\alpha}$ particle daughter nucleus is evaluated numerically from double-folding M3Y interaction. influence core deformation on also properly taken into account multipole expansion method....
We investigate the $\alpha$+\oo\ cluster structure in inversion-doublet band ($K^\pi=0_{1}^\pm$) states of \nene\ with an angular-momentum-projected version Tohsaki-Horiuchi-Schuck-R\"{o}pke (THSR) wave function, which was successful "in its original form" for description of, e.g., famous Hoyle state. In contrast traditional view on clusters as localized objects, especially inversion doublets, we find that these {\it single} THSR functions, are based concept nonlocalized clustering, can well...
An effective $\ensuremath{\alpha}$-particle equation is derived for cases where an $\ensuremath{\alpha}$ particle bound to a doubly magic nucleus. As example, we consider $^{212}\mathrm{Po}$ with the on top of $^{208}\mathrm{Pb}$ core. We core nucleus infinitely heavy, so that moves respect fixed center; is, recoil effects are neglected. The fully quantal solution problem discussed. approach inspired by Tohsaki-Horiuchi-Schuck-R\"opke wave function concept has been successfully applied light...
A microscopic calculation of $\alpha$-cluster preformation probability and $\alpha$ decay width in the typical emitter $^{212}$Po is presented. Results are obtained by improving a recent approach to describe [Phys. Rev. C 90, 034304 (2014)] implementing four-nucleon correlations (quartetting). Using actually measured density distribution $^{208}$ Pb core, calculated alpha agrees fairly well with one.
Cross sections for the reaction ${}^{1}\mathrm{H}(e,{e}^{'}{\ensuremath{\pi}}^{+})n$ were measured in Hall C at Thomas Jefferson National Accelerator Facility (JLab) using high-intensity Continuous Electron Beam (CEBAF) to determine charged pion form factor. Data taken central four-momentum transfers ranging from ${Q}^{2}=0.60$ 2.45 ${\mathrm{GeV}}^{2}$ an invariant mass of virtual photon-nucleon system $W=1.95$ and 2.22 GeV. The cross separated into four structure functions...
We present a microscopic calculation of alpha-cluster formation in heavy nuclei by using the quartetting wave function approach. The interaction quartet with core nucleus is taken local density approximation. found to be particularly sensitive interplay mean field felt and Pauli blocking as consequence antisymmetrization. striking feature probability across major shell closures 82 protons 126 neutrons reproduced. (or subshell) effects on superheavy are also analyzed.
Background: The nuclear charge radii provide direct information for the structures. In recent years, many pioneering researches have been devoted to based on Bayesian neural networks (BNN) method.Purpose: always complex structure. To analyze data relationships clearly, a statistical method is introduced study properties by combining sophisticated models with naive probability (NBP) classifier.Method: framework of NBP method, predicted are interpreted as most reasonable expectations. prior...
Two dimensional metal nanoparticle arrays with a size gradient (see figure) are generated by shadow deposition of finely-collimated low energy cluster beam under an oblique incident configuration. The length the region is tunable from hundreds nanometers to several micrometers, adjusting angle beam. nanoparticles changes about one order magnitude across region.
Within the interacting Fermi gas model for isospin asymmetric nuclear matter, effects of in-medium three-body interaction and two-body short-range tensor force owing to $\ensuremath{\rho}$ meson exchange, as well nucleon correlation on high-density behavior symmetry energy, are demonstrated respectively in a transparent way. Possible physics origins extremely uncertain energy at suprasaturation densities discussed.
The nuclear symmetry energy ${E}_{\mathrm{sym}}(\ensuremath{\rho})$ and its density slope $L(\ensuremath{\rho})$ can be decomposed analytically in terms of the single-nucleon potential isospin asymmetric matter. Using three popular effective interaction models which have been extensively used structure reaction studies, namely, momentum-dependent MDI model, Skyrme-Hartree-Fock approach, Gogny-Hartree-Fock we analyze contribution different to $L(\ensuremath{\rho})$. Our results show that...
A container picture is proposed for understanding cluster dynamics where the clusters make nonlocalized motion occupying lowest orbit of mean-field potential characterized by size parameter $``B"$ in THSR (Tohsaki-Horiuchi-Schuck-R\"{o}pke) wave function. The aspects inversion-doublet bands $^{20}$Ne which have been considered as a typical manifestation localized clustering are discussed. So far unexplained puzzling features function, namely that after angular-momentum projection two systems...
We present a microscopic calculation of $\alpha$-cluster formation in heavy nuclei $^{104}$Te ($\alpha$+$^{100}$Sn), $^{212}$Po ($\alpha$+$^{208}$Pb) and their neighbors $^{102}$Sn, $^{102}$Te, $^{210}$Pb $^{210}$Po by using the quartetting wave function approach. Improving local density approximation, shell structure core nucleus is considered, center-of-mass (c.o.m.) effective potential for quartet obtained self-consistently from model wavefunctions. The decay probabilities are solving...
The high momentum tail (HMT) of nucleons, as a signature the short-range correlations in nuclei, has been investigated by high-energy bremsstrahlung γ rays produced 86Kr+124Sn at 25 MeV/nucleon. energetic photons are measured CsI(Tl) hodoscope mounted on spectrometer CSHINE. energy spectrum ≥35 MeV can be reproduced Isospin- and Momentum-Dependent Boltzmann-Uehling-Uhlenbeck model calculations incorporating photon production channel from np process which HMTs nucleons is considered. A...
We investigate the recently discovered $\ensuremath{\alpha}$ decays of heavy and superheavy nuclei with $A=160--294$ by cluster model decay. This covers short-lifetime near proton-drip line, elements $Z=106--118$, long-lifetime decay naturally occurring nuclide $^{180}\mathrm{W}$ [Danevich et al., Phys. Rev. C 67, 014310 (2003)]. It is found that can well reproduce new data half-lives these nuclei. For model, without introducing any additional adjustments, reasonably many although...
We propose a generalized wave function based on the flexible original THSR (Tohsaki, Horiuchi, Schuck, R\"opke) [A. Tohsaki et al., Phys. Rev. Lett. 87, 192501 (2001)], which is applicable to studies of general cluster structures in nuclei. The ground-state band ${}^{20}$Ne investigated by using this and energies obtained agree well with experimental values. Moreover, it found that single functions almost completely coincide exact solutions $\ensuremath{\alpha}{+}^{16}$O resonating group...