Abstract Low-temperature plasma-processing technologies are essential for material synthesis and device fabrication. Not only the utilization but also development of plasma-related products services requires an understanding multiscale hierarchies complex behaviors phenomena, including plasma generation in physics chemistry, transport energy mass through sheath region, morphology- geometry-depe...

In this work we present an experimental study where energetic ions were produced in an underdense 2.5 × 10 cm−3 plasma created by a 50 fs Ti:Sapphire laser with 5 TWs of power. The plasma comprises 95% He and 5% N2 gases. Ionization-induced trapping of nitrogen K-shell electrons in the laser-induced wakefield generates an electron beam with a mean energy of 40 MeV and ∼1 nC of charge. Some of t...

In Alcator C-Mod, we have sought to identify ICRF specific impurity sources and estimate the lifetime of thin, low Z films in the presence of high power ICRF heating. With ICRF, the erosion rate of low-Z films is estimated to be 15-20 nm/s indicating the eroding species energy is much higher than that normally found in the SOL. Using emissive probes, plasma potential measurements confirm the pr...

Electric potential near a wall in plasma with magnetic field increasing toward a wall is investigated analytically. A magnetic field that is symmetric about an axis and increases monotonically toward the wall is considered. The potential profile is analyzed by solving the plasma-sheath equation that gives the electric potential in the plasma region and the sheath region near the wall self-consi...

The weakly nonlinear regime of transverse paramagnetic dust grain oscillations in dusty (complex) plasma crystals is discussed. The nonlinearity, which is related to the sheath electric/magnetic field(s) and to the inter–grain (electrostatic/magnetic dipole) interactions, is shown to lead to the generation of phase harmonics and, in the case of propagating transverse dust-lattice modes, to the ...

A VERTEBRATE motor nerve fiber is thickly covered with a layer of myelin sheath except at narrow gaps called nodes of Ranvier. As the myelin sheath is shown to be composed of an electric insulator, investigation of the physiological properties of these nodes seems to disclose the nature of the plasma membrane of an infinitesimal dimension and consequently to enable us better to understand the a...