Robert L. Merlino

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An experiment has been performed to study the behavior of dust acoustic waves driven at high frequencies f 100 Hz , extending the range of previous work. In this study, two previously unreported phenomena are observed—interference effects between naturally excited dust acoustic waves and driven dust acoustic waves, and the observation of finite dust(More)
We report the empirical discovery of an exceptionally high cross-B electron transport rate in magnetized plasmas, in which transverse currents are driven with abruptly applied high power. Experiments in three different magnetic geometries are analyzed, covering several orders of magnitude in plasma density, magnetic field strength, and ion mass. It is(More)
Summary form only given. A dusty (or complex) plasma is a four-component plasma system consisting of electrons, ions, neutral atoms, and charged, nanometer to micrometer-sized particles (i.e., the “dust”). Because these dust grains are charged, they fully participate in the plasma dynamics and can be used to reveal details about transport,(More)
1) N. Sato, Plasma Sources, Sci. Technol. 3, 395 (1994). 2) Isikawa et al., J. Phys. Soc. Jpn. 67, 158 (1998) N. Sato1,2 has shown that ne/n+ can be determined by measurements of the propagation characteristics of various electrostatic waves in the negative ion plasma which depend on this quantity. A plot of ne/n+ vs. the SF6 pressure in a potassium ion Q(More)
By adjusting the anode current and axial magnetic strength of a dc-glow-discharge dusty plasma, we have found plasma and dust conditions conducive to dusty plasma structurization, similar to the one discussed theoretically by Morfill and Tsytovich [Plasma Phys. Rep. 26, 682 (2000)]. The structurization instability leads to the formation of a pattern where(More)
Using a quantitative in vitro model simulating clinical conditions, we studied the efficacy of conventional and nonconventional 3-day therapies involving vancomycin for treating the internal surface of catheters colonized with a slime-producing strain of Staphylococcus epidermidis. When infused for 1 hr every 8 hr through the catheter at the daily dose(More)
A fluid analysis of the excitation of dust ion-acoustic (DIA) waves in a collisional dusty plasma is presented. The DIA waves are excited by a relative drift of the electrons and ions produced by a steady-state electric field applied to the plasma. The DIA instability is more easily excited if the relative concentration of negatively charged dust is(More)