Resonant Absorption of P-Modes by Sunspots

Absorption / Emission of Solar P - modes : MDI

We search for sources and sinks of solar p-mode waves by creating absorption maps from Dopplergrams taken by the Michelson Doppler Interferometer (MDI) instrument on board SOHO. Although the maps are noisy, we present evidence for sources and sinks, of duration 0.5 { 1 hour or less, based on an autocorrelation analysis of maps made from sequential intervals of data. Emission and absorption near...

Investigation of Λ*)1405) resonant formation by using the energy spectrum of triton in stopped kaon absorption on 4He

To determine the position of  quasi-bound state, the triton kinetic energy spectrum in the resonant capture of  at rest in  is calculated by a coupled-channel procedure. An  analysis of theoretical spectra to experimental data yielded the mass and width of , respectively, and, where a possible population of and a small p-orbit capture contribution are taken into account. The calculations show t...

Resonant absorption instability

A new type of instability is demonstrated. It occurs when a space-charge wave develops along an electron beam that in turn propagates in a resonant medium. The space-charge wave grows in space according to the loss associated with the resonance namely, it is directly related to the attenuation of a pure electromagnetic mode in the medium. The spatial growth is proportional to the square root of...

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array

We propose an approach for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant dielectric nanospheres deposited as a continuous film on top of a thin planar cell. We numerically demonstrate this enhancement using 3D full field finite difference time domain simulations and 3D finite element device physics simulations of a nanosphere array a...

Mechanism of Edge Localized Modes mitigation by Resonant Magnetic Perturbations