Electromagnetic catalysis of the radiative transitions of ν i → ν j γ type in the field of an intense monochromatic wave Abstract The radiative decay of the massive neutrino ν i → ν j γ in a circularly polarized electromagnetic wave is investigated within the Standard theory with lepton mixing. The decay probability in the wave field does not contain a threshold factor ∼ (1 − m i /m j) as oppos...

Planar electromagnetic phantom design for measurement and imaging using NMR has been performed. Electromagnetic phantom computation and testing on a NMR 0.178 Tesla Esaote Opera imager were accomplished. The classical geometrical and chemical phantoms are generally used for testing of NMR imaging systems. They are simple cylindrical or rectangular objects with different dimensions and shapes wi...

observations over the globe. The modeling activities encompass diagnostic studies with a number of radiative transfer codes, particularly the Discrete Ordinate model of Stamnes et al. (1988) (DISORT), and the development of a highly flexible Monte Carlo model to compute the threedimensional (3-D) radiation field for any cloud (liquid water) distribution. In addition, a number of multifractal an...

We study alignment of grains by radiative torques. We found a steep rise in radiative torque efficiency as grain size increases. This allows the larger grains that are known to exist within molecular clouds to be aligned by the attenuated and reddened interstellar radiation field. In particular, we found that, even deep inside giant molecular clouds, e.g., at optical depths corresponding to AV ...

We examine radiative transfer theory, which accounts for the multiple scattering of waves, in a layered medium composed of randomly placed thin beds excited by a 1D source. At its most basic level, radiative transfer predicts that the wavefield separates into a coherent, or wavelike, part and an incoherent, or diffusive, flow after a length scale known as a mean free path. The dynamic propertie...

The field-emission current from realistic metal surfaces is evaluated within the density-functional theory using the Landauer-Büttiker approach. The electronic density in the surface region and the potential barrier induced by the finite electric field are calculated self-consistently using a Green’s-function embedding scheme and the full-potential linearized-augmented plane-wave method. Applic...

Radiative sky cooling reduces the temperature of a system by promoting heat exchange with the sky; its key advantage is that no input energy is required. We will review the origins of radiative sky cooling from ancient times to the modern day, and illustrate how the fundamental physics of radiative cooling calls for a combination of properties that may not occur in bulk materials. A detailed co...

Many-particle QED is applied to kinetic theory of radiative processes in manycomponent plasmas with relativistic electrons and nonrelativistic heavy particles. Within the framework of nonequilibrium Green’s function technique, transport and mass-shell equations for fluctuations of the electromagnetic field are obtained. We show that the transverse field correlation functions can be decomposed i...