We present a theory of the magnetic field enhancement of terahertz (THz) emission from photogenerated carriers in the surface depletion region of a semiconductor. A combination of the Drude-Lorentz model for the carrier dynamics with an appropriate solution of the radiation problem is sufficient to explain the strong B -field enhancement in THz radiation that has been observed experimentally. T...

We propose and analyze the "complementary" structure of a metallic nanogap, namely, the metallic nanowire for magnetic field enhancement. A huge enhancement of the field up to a factor of 300 was achieved. Introducing the surface impedance concept, we also develop and numerically confirm a new analytic theory which successfully predicts the field enhancement factors for metal nanostructures. Co...

Recently, Robicheaux and Pindzola @Phys. Rev. Lett. 79, 2237 ~1997!# reported on model calculations of dielectronic recombination ~DR! in the presence of crossed electric and magnetic fields. They showed that the enhancement of the DR by an electric field may be increased further when a magnetic field perpendicular to the electric field is present in the collision region. In this paper, we desc...

The nonlinear write process of magnetic recording allows to write the symbols 1 only. The magnetic channel is a di erentiating channel. The locations of the transitions from +1 to -1 and vice versa in the input signal to the magnetic channel are important for the received waveform. This paper de nes a noise enhancement constrained, nite dimensional equalizer. This equalizer trades some misequal...

INTRODUCTION AND OBJECTIVES Severity of hypertrophic cardiomyopathy has been associated with the amount of myocardial fibrosis in autopsy studies. Cardio-vascular magnetic resonance allows, by means of the delayed contrast-enhancement technique, an in vivo detection of focal myocardial fibrosis. Our aim was to study myocardial fibrosis in patients with hypertrophic cardiomyopathy by means of co...

magnetic survey is nowadays the most efficient non-destructive geophysical method. this technique puts emphasis on the measurement of anomalies of the earth’s magnetic field, caused by the presence of archaeological remains in the ground. magnetic survey is one of the oldest geophysical methods for airborne and land use. that is why there is a large volume of data that could be used for geologi...