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Kinetic effects of <i>E</i> × <i>B</i> sheared flow on the hydrodynamic drift instabilities
Mikhailenko, V V,Mikhailenko, V S,Lee, Hae June,Koepke, M E Published jointly by The Institute of Physics and 2013 Plasma physics and controlled fusion Vol.55 No.8
<P>The temporal evolution of the hydrodynamic ion temperature gradient instability and resistive hydrodynamic drift instability of plasma flow with velocity shear is analytically investigated. The non-modal kinetic theory (Mikhailenko <I>et al</I> 2011 <I>Phys. Plasmas</I> <A HREF='http://dx.doi.org/10.1063/1.3591346'><B>18</B> 062103</A>) is applied which uses the method of shearing modes (or so-called non-modal approach) as its foundation. In this theory, the velocity shear reveals as the time-dependent effect of the finite Larmor radius in the integral equation for the electrostatic potential, and resulted in the decrease with time the frequencies and the growth rates of the instabilities.</P>
Differential site attenuation without using free space antenna factor
Jaehoon Yun,Camell, Dennis G.,Novotny, David R.,Koepke, Galen H.,Guerrieri, Jeffrey R. IET 2015 Electronics letters Vol.51 No.4
<P>Differential site attenuation (DSA) to verify the performance of electromagnetic compatibility (EMC) facilities, open area test site and semi-anechoic chamber, without using a calibrated free space antenna factor (AF<SUP>FS</SUP>) is proposed. In the evaluation of EMC facilities, the AF<SUP>FS</SUP> is one of the main uncertainty contributions. The measured results are reported and compared with the current site attenuations. It is shown that the proposed DSA has good discrimination capability in verifying the performance of EMC facilities.</P>