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We employ a microscopic method to study how isospin affect the fission potential of $^{240}$Pu. Our approach uses constrained Hartree-Fock theory (CHF) which allows us to separately investigate the isoscalar and isovector properties of the…

Nuclear Theory · Physics 2024-10-15 K. Godbey , C. Ross , A. S. Umar

In this talk, we first briefly review the isospin dependence of the total nucleon effective mass $M^{\ast}_{J}$ inferred from analyzing nucleon-nucleus scattering data within an isospin dependent non-relativistic optical potential model,…

Nuclear Theory · Physics 2016-10-25 Bao-An Li , Bao-Jun Cai , Lie-Wen Chen , Xiao-Hua Li

The isospin dependence of the spin-orbit interaction in light neutron rich nuclei is investigated in the framework of relativistic mean field theory. The magnitude of the spin-orbit potential is considerably reduced in drip line nuclei,…

Nuclear Theory · Physics 2009-10-30 G. A. Lalazissis , D. Vretenar , W. Poeschl , P. Ring

The existence of a novel enlarged shape invariance property valid for some rational extensions of shape-invariant conventional potentials, first pointed out in the case of the Morse potential, is confirmed by deriving all rational…

Mathematical Physics · Physics 2012-10-29 Christiane Quesne

A momentum-dependent formulation based on a stationary spin-0 and isospin-1 dibaryon field is proposed to improve convergence of chiral effective field theory in the $\cs{1}{0}$ channel of $NN$ scattering. Although the two-parameter…

Nuclear Theory · Physics 2022-05-16 Rui Peng , Songlin Lyu , Sebastian König , Bingwei Long

Isotopic dependence of the Casimir force is key to probing new physics and pushing novel technologies at the micro and nanoscale, but is largely unexplored. In 2002, an isotope effect of 10^(-4) was estimated for metals -- orders of…

Mesoscale and Nanoscale Physics · Physics 2022-09-07 Lanyi Xie , Fuwei Yang , Bai Song

We study the posibility of large isospin fluctuations in high-energy heavy-ion collisions by assuming that pions are produced semiclassically both directly and in pairs through the isovector channel. The leading-particle effect and the…

High Energy Physics - Phenomenology · Physics 2009-09-25 M. Martinis , V. Mikuta-Martinis , A. Švarc , J. Črnugelj

The optical model potentials for nucleon-nucleus elastic scattering at $65$~MeV are calculated for $^{12}$C, $^{16}$O, $^{28}$Si, $^{40}$Ca, $^{56}$Fe, $^{90}$Zr and $^{208}$Pb in first order multiple scattering theory, following the…

Nuclear Theory · Physics 2009-09-25 C. R. Chinn , Ch. Elster , R. M. Thaler , S. P. Weppner

This is the second of two papers in which we study real and virtual photon-proton scattering in a nonperturbative framework. In the first paper we have identified the leading contributions to this process at high energies and have derived…

High Energy Physics - Phenomenology · Physics 2008-11-26 Carlo Ewerz , Otto Nachtmann

Isospin effects in 12C ion induced reactions on enriched tin isotopes are investigated. The isoscaling parameter B is determined for different mass regions of product nuclei. It is shown that the isoscaling parameter is sensitive to the…

Efficiency corrected single ratios of neutron and proton spectra in central $^{112}$Sn+$^{112}$Sn and $^{124}$Sn+$^{124}$Sn collisions at 120 MeV/u are combined with double ratios to provide constraints on the density and momentum…

Using covariance analysis, we quantify the correlations between the interaction parameters in a transport model and the observables commonly used to extract information of the Equation of State of Asymmetric Nuclear Matter in experiments.…

Nuclear Theory · Physics 2015-09-30 Yingxun Zhang , M. B. Tsang , Zhuxia Li

A previously derived semi-microscopic analysis based on the Double Folding Model, for alpha-particle elastic scattering on A~100 nuclei at energies below 32 MeV, is extended to medium mass A ~ 50-120 nuclei and energies from ~13 to 50 MeV.…

Nuclear Experiment · Physics 2015-05-13 M. Avrigeanu , A. C. Obreja , F. L. Roman , V. Avrigeanu , W. von Oertzen

We compute rest-frame reflection spectra and the corresponding energy-dependent linear polarization degree and angle for (un)polarized single-temperature blackbody spectra impinging on a partially ionized constant-density optically thick…

High Energy Astrophysical Phenomena · Physics 2026-05-27 J. Podgorný , M. Dovčiak , R. Goosmann , F. Marin , L. Marra , G. Matt , A. Różańska , R. Taverna

We investigate the self-energies of particles in an external magnetic field $B$. The dependence is generally of the type $\sqrt{P(B)}$ with $P$ a polynomial in $B$ and the participating masses. The non-analytic point depends on the mass and…

High Energy Physics - Phenomenology · Physics 2013-05-30 Tim Ledwig

Dirac equation for a charged spinor in electromagnetic field is written for special cases of spherically symmetric potentials. This facilitates the introduction of relativistic extensions of shape invariant potential classes. We obtain the…

High Energy Physics - Theory · Physics 2008-11-26 A. D. Alhaidari

We present solutions of the Dirac equation with spin symmetry for vector and scalar modified P\"oschl-Teller potential within framework of an approximation of the centrifugal term. The relativistic energy spectrum is obtained using the…

Mathematical Physics · Physics 2015-05-20 D. Agboola

Antiprotonic atoms have served as a pivotal tool for investigating the properties of baryon-baryon interactions, including their spin dependence. Examining the spin-orbit splittings induced by their strong interactions also could help…

High Energy Physics - Phenomenology · Physics 2025-11-11 Kenta Yoshimura , Shunsuke Yasunaga , Daisuke Jido , Hiroyuki Fujioka

The fragmentation of projectile and spectator is studied at the different incident energies using isospin dependent QMD model with reduced isospin dependent cross-section. Different systems have been used for the analysis of fragment…

Nuclear Theory · Physics 2012-01-10 Karan Singh Vinayak , Mohinder Singh , Suneel Kumar

The effect of central, tensor and spin-isospin nucleon-nucleon correlations upon semi-exclusive ^{16}O(e,e'p) reactions is studied for Q^2 and Bjorken x values in the range $0.2 \lesssim Q^2 \lesssim 1.1 (GeV/c)^2$ and 0.15 $\lesssim$ x…

Nuclear Theory · Physics 2016-09-08 Stijn Janssen , Jan Ryckebusch , Wim Van Nespen , Dimitri Debruyne
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