Laboratory observations of plasma double-layers.
نویسندگان
چکیده
منابع مشابه
Multiple double layers in laboratory experiments relevant for space plasma phenomena
Double layers (DLs) are nonlinear potential structures in plasmas, consisting of two adjacent layers of positive and negative space charges, in which the potential jumps, thereby creating an electric field. They were intensively investigated in the last decades because of their frequent occurrence in almost all possible devices: tokamaks, spheromaks, thermionic converters, Q-machines, double pl...
متن کاملOn anode spots, double layers and plasma contactors
Luminous, sharply defined and nearly spherical objects (‘fireballs’), typically several centimetres in diameter, have been observed in Ar, Kr and Xe plasmas. The ‘fireballs’ are anchored on a disk anode biased et 4040 V above ground potential. They have been analysed in terms of a spherical double-layer model, in which ionizalion of the gas atoms by electrons energized at the double layer plays...
متن کاملFilamentary double layers
The properties of double layers produced in current filaments have been studied. The experiments were performed in a magnetized triple plasma device in which the diameter of the central plasma column could be varied. The scaling of the double layer potential drop I’,, with the parameter jd’, where j is the current density in the double layer and d is the double layer thickness, was determined f...
متن کاملSome Dynamical Properties of Very Strong Double Layers in a Triple Plasma Device
Since double layers observed in space and in simulations are rarely if every static, considerable attention has been given to studies of motions of double layers in the laboratory. Extensive reviews have recently been published of the dynamical properties of very strong double layers (eV/kTe 1000) in a Q machine (Sato et al., 1983; Iizuka et al., 1983) and strong double layers (eV/kTe 10) in a ...
متن کاملElectrostatic interaction of oppositely charged double layers
We determined with anisotropic hypernetted chain theory the effective pressure and counterion excess of two oppositely charged surfaces immersed in an electrolyte solution. These thermodynamic properties are enhanced in surfaces with evenly smeared surface charges with respect to those containing confined mobile charges. For low surface charges and moderate reservoir salt concentration ions are...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of geomagnetism and geoelectricity
سال: 1978
ISSN: 0022-1392
DOI: 10.5636/jgg.30.461