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A generic expression to compute triple parton scattering (TPS) cross sections in high-energy proton-nucleus (pA) collisions is derived as a function of the corresponding single-parton cross sections and an effective parameter encoding the…

高能物理 - 唯象学 · 物理学 2016-12-28 David d'Enterria , Alexander M. Snigirev

Potential energy surfaces and fission barriers of superheavy nuclei are analyzed in the macroscopic-microscopic model. The Lublin-Strasbourg Drop (LSD) is used to obtain the macroscopic part of the energy, whereas the shell and pairing…

In evaluating differential cross section of elastic scattering, different theories were applied to low-momentum and relativistic particles. For low-momentum motion, Lippmann-Schwinger scattering equation was applied, called fundamental…

综合物理 · 物理学 2022-09-14 Huai-Yu Wang

We develop a new three-dimensional time-dependent radiative transfer code, TRINITY (Time-dependent Radiative transfer In Near-Infrared TomographY), for in-vivo diffuse optical tomography (DOT). The simulation code is based on the design of…

医学物理 · 物理学 2022-01-10 Hidenobu Yajima , Makito Abe , Masayuki Umemura , Yuichi Takamizu , Yoko Hoshi

Three precise measurements for elastic pd scattering at 135 MeV/A have been performed with the three different experimental setups. The cross sections are described well by the theoretical predictions based on modern nucleon-nucleon forces…

We review different models used for reactions involved in nuclear astrophysics. The reaction rate is defined for resonant as well as for non-resonant processes. For low-density nuclei, we describe the DWBA method, the potential model, the…

天体物理学 · 物理学 2009-11-10 P. Descouvemont , T. Rauscher

The study aims to explore the mechanism of heavy-ion fusion using various effective nucleon-nucleon (NN) interactions and nuclear density distributions. The nuclear potentials are obtained by folding the relativistic effective NN…

核理论 · 物理学 2025-05-14 Shilpa Rana , Raj Kumar , M. Bhuyan

A three-dimensional Monte Carlo code for modelling radiation transport in Type Ia supernovae is described. In addition to tracking Monte Carlo quanta to follow the emission, scattering and deposition of radiative energy, a scheme involving…

天体物理学 · 物理学 2008-11-26 S. A. Sim

We develop a time-dependent multi-group multidimensional relativistic radiative transfer code, which is required to numerically investigate radiation from relativistic fluids involved in, e.g., gamma-ray bursts and active galactic nuclei.…

天体物理仪器与方法 · 物理学 2015-09-09 Nozomu Tominaga , Sanshiro Shibata , Sergei I. Blinnikov

We show how the scattering phase shift, the s-wave scattering length and the p-wave scattering volume can be obtained from Riccati equations derived in variable phase theory. We find general expressions that provide upper and lower bounds…

原子物理 · 物理学 2007-05-23 H. Ouerdane , M. J. Jamieson

The analysis of shape transitions in Nd isotopes, based on the framework of relativistic energy density functionals and restricted to axially symmetric shapes in Ref. \cite{PRL99}, is extended to the region $Z = 60$, 62, 64 with $N \approx…

核理论 · 物理学 2009-12-31 Z. P. Li , T. Niksic , D. Vretenar , J. Meng , G. A. Lalazissis , P. Ring

The relativistic effect on differential cross sections, nucleon-to-nucleon and nucleon-to-deuteron polarization transfer coefficients, and the spin correlation function, of nucleon-deuteron elastic scattering is investigated employing…

核理论 · 物理学 2009-09-25 Sadhan K. Adhikari , Lauro Tomio

Energies for the lowest 56 levels, belonging to the 3s$^2$3p, 3s3p$^2$, 3p$^3$, 3s$^2$3d, 3s3p3d, 3s$^2$4$\ell$ and 3s$^2$5$\ell$ configurations of Si II, are calculated using the {\sc grasp} (General-purpose Relativistic Atomic Structure…

天体物理仪器与方法 · 物理学 2015-06-19 KM Aggarwal , FP Keenan

Measurements of nuclear spin-dependent parity-violating (NSD-PV) effects provide an excellent opportunity to test nuclear models and to search for physics beyond the Standard Model. Molecules possess closely-spaced states with opposite…

We review a recently developed transfer matrix formulation of the stationary scattering in two and three dimensions where the transfer matrix is a linear operator acting in an infinite-dimensional function space. We discuss its utility in…

数学物理 · 物理学 2023-10-03 Farhang Loran , Ali Mostafazadeh

We consider QED in five dimensions in a configuration where matter is localized on a 3-brane while foton propagates in the bulk. The idea is to investigate the effects of the Kaluza-Klein modes of the photon in the relativistic regime, but…

高能物理 - 唯象学 · 物理学 2009-11-10 J. R. Nascimento , C. A de S. Pires , R. F. Ribeiro

We present quasi-elastic neutrino-nucleus cross sections in the energy range from 150 MeV up to 5 GeV for the target nuclei 12C and 56Fe. A relativistic description of the nuclear dynamics and the neutrino-nucleus coupling is adopted. For…

核理论 · 物理学 2009-11-11 M. C. Martinez , P. Lava , N. Jachowicz , J. Ryckebusch , K. Vantournhout , J. M. Udias

To meet burning needs of high-resolution pressure-induced line-shape parameters in the UV/visible regions for hot-temperature industrial and atmospheric applications as well as current and future space missions, phase-shift theory is…

大气与海洋物理 · 物理学 2023-12-19 Jeanna Buldyreva , Ryan P. Brady , Sergei N. Yurchenko , Jonathan Tennyson

Context: State of the art quantitative spectroscopy of OB-stars compares synthetic spectra (calculated by means of 1D, spherically symmetric computer codes) with observations. Certain stellar atmospheres, however, show strong deviations…

太阳与恒星天体物理 · 物理学 2018-09-12 L. Hennicker , J. Puls , N. D. Kee , J. O. Sundqvist

The matrix elements of relativistic nucleon-nucleon $(NN)$ potentials are calculated directly from the nonrelativistic potentials as a function of relative $NN$ momentum vectors, without using a partial wave decomposition. To this aim, the…

核理论 · 物理学 2021-09-08 M. R. Hadizadeh , M. Radin , F. Nazari