An elastic wave propagating in a metal loses a portion of its energy from scattering caused by acoustic impedance differences existing at the boundaries of anisotropic grains. Theoretical scattering models capture this phenomena by assuming the incoming wave is described by an average elastic moduli tensorC0 i jkl (x) that is perturbed by a grain with elasticityCi jkl (x ′) where the scattering...

Ultrafast video recording of spatiotemporal light distribution in a scattering medium has a significant impact in biomedicine. Although many simulation tools have been implemented to model light propagation in scattering media, existing experimental instruments still lack sufficient imaging speed to record transient light-scattering events in real time. We report single-shot ultrafast video rec...

Emissive media are often challenging to render: in thin regions where only few scattering events occur the emission is poorly sampled, while sampling events for emission can be disadvantageous due to absorption in dense regions. We extend the standard path space measurement contribution to also collect emission along path segments, not only at vertices. We apply this extension to two estimators...

The possibility of detecting supersymmetric dark matter is examined within the framework of the minimal supergravity model (MSGM), where the˜Z 1 is the LSP for almost the entire parameter space. A brief discussion is given of experimental strategies for detecting dark matter. The relic density is constrained to obey 0.10 ≤ Ω ˜ Z 1 h 2 ≤0.35, consistent with COBE data. Expected event rates for a...

Event shape variables are known to exhibit rather large hadronisation effects, not treated by purely perturbative calculations. It has been shown [1] that the size of these corrections varies as (Λ/Q), with Q being the hard scale of the process, for most of the event shape observables. This article focuses on power corrections in the approach initiated by Dokshitzer and Webber [2], since these ...

The working group on jets and high-E⊥ phenomena studied subjects ranging from next-to-leading order (NLO) corrections in deeply inelastic scattering (DIS) and photoproduction with the corresponding determinations of physical quantities, to the physics of instanton-induced processes, where a novel non-perturbative manifestation of QCD could be observed. Other centres of interest were the physics...

Three scattering mechanisms that limit the observable properties low-frequency emission from transient sources are discussed. Both Induced Compton and Induced Raman scattering hinder the escape of the bright radiation envisaged to be generated from the compact extragalactic transients and that many hope to detect with future widefield radio telescopes. In cases where the radiation is observed, ...

We have developed a simulation of quasielastic electron scattering off nucleons in deuterium. The original code was developed by J.Lachniet for the analysis of the CLAS6 GM experiment. The Fermi motion of the nucleons creates an effective beam energy different from the laboratory one as seen from the rest frame of the moving nucleon. This effective beam energy is used with the Hulthen distribut...

We compute the two-loop enhancement factors for our earlier one-loop calculations of leading (1=Q) power corrections to the mean values of some event shape variables in deep inelastic lepton scattering. The enhancement is found to be equal to the universal \Milan factor" for those shape variables considered, provided the one-loop calculation is performed in a particular way. As a result, the ph...

We introduce an eikonal Monte Carlo model (running in conjunction with HERWIG) for simulating multiparticle production in hadron-hadron interactions. We compare our simulated data to the CDF Tevatron measurement of the underlying event activity in hard inelastic proton-antiproton scattering at √ s=1.8 TeV. By fixing the only free parameter in our model, the total hadron-hadron cross section , w...