The realization of compact X-ray sources is one the most intriguing applications laser-plasma based electron acceleration. These on oscillation short micron-sized bunches relativistic electrons provide femtosecond pulses that are collimated, bright, and partially coherent. state-of-the-art laser plasma can photon flux over 1011 photons/shot. further be enhanced with availability high repetition...

Transport properties of the ionic component dense plasmas are investigated on basis effective potentials taking into account presence an external alternating electrical (laser) field. The latter generates single particle oscillations electrons and significantly changes screening test charge in plasma. Therefore, transport coefficients become non-monotonic function oscillation frequency. results...

We present a novel technique to measure time-resolved laser-induced fluorescence signals in plasma sources that have a relatively constant Fourier spectrum of oscillations in steady-state operation, but are not periodically pulsed, e.g., Hall thrusters. The technique uses laser modulation of the order of MHz and recovers signal via a combination of band-pass filtering, phase-sensitive detection...

We present the theory of a Josephson parametric amplifier employing two-pump sources. Our calculations are based on input-output theory, and can easily be generalized to any coupled system involving parametric interactions. We analyze the operation of the device, taking into account the feedback introduced by the reaction of the signal and noise on the pump power, and in this framework, compute...

thrombotic thrombocytopenic purpura is the result of multiple thrombus disseminated in small arterioles throughout the body. principle damage is in the endothelium of small vessels and capillaries. from 1982 to 1999, 28 patients (16 female and 12 male) have been treated for ttp. the outcome was evaluated for risk factors and prognosis. these patients were 18 to 69 years old. all had neurologica...

A sudden stratospheric waring occurred in the southern hemisphere during September 2019, accompanied by an exceptionally strong quasi-6-day wave (Q6DW). We examine ionospheric response using global total electron content (TEC) maps, with a focus on short-period variability (5–48 h). Fourier analysis of TEC data reveals variations associated secondary waves due to non-linear interaction between ...