The method of screening and renormalization for including the Coulomb interaction in the framework of momentum-space integral equations is applied to the three-and four-body nuclear reactions. The Coulomb effect on the observables and the ability of the present nuclear potential models to describe the experimental data is discussed. The Coulomb interaction, due to its long range, does not satis...

To investigate and analyze the influence of different stress environments on deformation destabilization rocks surrounding laminated roadways under high stress, this study conducted numerical simulations coal–rock combination circumferential pressures highly stressed lateral pressure coefficients. In addition, a new custom constitutive structure model was constructed based Mohr–Coulomb criterio...

The development of an effective evaluation method suitable for loess-tunnel excavation is necessary to avoid the collapse accidents caused by tunnel and any secondary disasters. Although Fenner formulas modified are widely used in engineering, a defect still exists these because Mohr–Coulomb (M–C) criterion exaggerates tensile strength surrounding rock loess tunnel. A newly formula was derived ...

Torpedo anchors are a new type of anchoring system in deepwater that is much more economical than conventional methods. The dynamic penetration process vitally important to the installation torpedo anchors. Based on spherical cavity expansion theory, response characteristics pressure-locked soils analyzed using Mohr-Coulomb criterion. equations for with bullet-shaped heads established consideri...

Third order Coulomb correction to t ¯ t threshold cross section * We report on our result of third order Coulomb correction to the cross section σ(e + e − → t ¯ t) near threshold. Analytic expression for the Coulomb energy and wave function at the origin are obtained. We discuss the significance of the Coulomb correction to the threshold cross section and heavy quarkonium phenomenology. 1. Thre...

single-valence electron atoms are an important class of atoms. their oscillator strengths are their important properties. knowing the oscillator strengths one can easity calculate the transition probabilities of the spectral lines and hence the lifetimes of energy levels of most atoms. the oscillator strengths of the spectral lines of most atoms are not knoen with sufficient accuracy due to the...

Quantum mechanical models and practical calculations often rely on some exactly solvable models like the Coulomb and the harmonic oscillator potentials. The D dimensional generalized Coulomb potential contains these potentials as limiting cases, thus it establishes a continuous link between the Coulomb and harmonic oscillator potentials in various dimensions. We present results which are necess...

Quantum mechanical models and practical calculations often rely on some exactly solvable models like the Coulomb and the harmonic oscillator potentials. The D dimensional generalized Coulomb potential contains these potentials as limiting cases, thus it establishes a continuous link between the Coulomb and harmonic oscillator potentials in various dimensions. We present results which are necess...