Wave-number selection by soft boundaries near threshold
نویسندگان
چکیده
منابع مشابه
Structure of near-threshold s-wave resonances.
We study the structure of two-body s-wave bound states as well as resonances in the threshold energy region. We focus on the single-channel scattering where the scattering length and the effective range are given by real numbers. It is shown that, in the energy region where the effective range expansion is valid, the properties of resonances are constrained only by the position of the pole. We ...
متن کاملShock wave-bubble interaction near soft and rigid boundaries during lithotripsy: numerical analysis by the improved ghost fluid method.
In the case of extracorporeal shock wave lithotripsy (ESWL), a shock wave-bubble interaction inevitably occurs near the focusing point of stones, resulting in stone fragmentation and subsequent tissue damage. Because shock wave-bubble interactions are high-speed phenomena occurring in tissue consisting of various media with different acoustic impedance values, numerical analysis is an effective...
متن کاملSolution of Wave Equations Near Seawalls by Finite Element Method
A 2D finite element model for the solution of wave equations is developed. The fluid is considered as incompressible and irrotational. This is a difficult mathematical problem to solve numerically as well as analytically because the condition of the dynamic boundary (Bernoulli’s equation) on the free surface is not fixed and varies with time. The finite element technique is applied to solve non...
متن کاملProperties of Soft Radiation Near tt̄ and W + W − Threshold
We discuss the characteristic interference features of soft radiation in the threshold production of heavy unstable particles: soft gluon radiation in e+e− → tt̄ and soft photon radiation in e+e− → W+W−. We show that the heavy particle decay width controls the interference between the emission off the final state particles. As a result, the radiation pattern may provide a way of measuring the de...
متن کاملConvection under rotation for Prandtl numbers near 1: Linear stability, wave-number selection, and pattern dynamics
Rayleigh-Bénard convection with rotation about a vertical axis was studied with the shadowgraph imaging method up to a dimensionless rotation rate V of 22. Most of the results are for a cylindrical convection cell with a radius-to-height ratio G540 that contained CO2 at 33.1 bars with a Prandtl number s50.93. Measurements of the critical Rayleigh number Rc and wave number kc for 0,V,22 agree we...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 1984
ISSN: 0556-2791
DOI: 10.1103/physreva.29.391