Electrically conductive foamed polyurethane/silicone rubber/graphite nanocomposites as radio frequency wave absorbing material: The role of foam structure

2012 ◽  
Vol 33 (3) ◽  
pp. 397-403 ◽  
Author(s):  
Ahmad R. Shafieizadegan-Esfahani ◽  
Ali A. Katbab ◽  
Ali R. Pakdaman ◽  
P. Dehkhoda ◽  
Mohammad H. Shams ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Silicone Rubber ◽  
Electrically Conductive ◽  
Frequency Wave ◽  
Foam Structure ◽  
Absorbing Material ◽  
Radio Frequency Wave ◽  
Graphite Nanocomposites

Direct measurement of density oscillation induced by a radio-frequency wave

2007 ◽  
Vol 78 (8) ◽  
pp. 083502 ◽  
Author(s):  
T. Yamada ◽  
A. Ejiri ◽  
Y. Shimada ◽  
T. Oosako ◽  
J. Tsujimura ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Direct Measurement ◽  
Frequency Wave ◽  
Density Oscillation ◽  
Radio Frequency Wave

THE NONLINEAR INTERACTION OF A RADIO-FREQUENCY WAVE WITH AN INHOMOGENEOUS PLASMA SLAB: I. KINETICS OF HIGH-TEMPERATURE AIR IN THE PRESENCE OF AN ELECTROMAGNETIC FIELD

1965 ◽  
Vol 43 (11) ◽  
pp. 2021-2035 ◽  
Author(s):  
Robert J. Papa ◽  
Carl T. Case
Keyword(s):  
High Temperature ◽  
Radio Frequency ◽  
Electron Temperature ◽  
Collision Frequency ◽  
Inhomogeneous Plasma ◽  
Frequency Wave ◽  
Effective Collision Frequency ◽  
Plasma Slab ◽  
Radio Frequency Wave ◽  
Effective Collision

A radio-frequency wave is normally incident upon an inhomogeneous plasma slab. The plasma slab is composed of partially ionized high-temperature air corresponding to the characteristics of the plasma sheath surrounding hypersonic reentry vehicles. The isotropic part of the electron velocity distribution function is Maxwellian because of electron–electron collisions. The electromagnetic wave is intense enough to heat selectively the electron gas, altering the various electron production and loss processes. The high-frequency limit is considered, and expressions are obtained for the electron number density and effective collision frequency as a function of electron temperature. The effective collision frequency takes into account the effects of electron–neutral and electron–ion collisions for momentum transfer. From an energy balance equation, the electron temperature is found to be a function of both the frequency and field strength of the wave. The electron temperature is found also to exhibit an instability that gives rise to a hysteresis effect.

I-mode operation in helium plasma with pure radio frequency wave heating and ITER-like tungsten divertor on EAST

2021 ◽  
Vol 61 (11) ◽  
pp. 116023
Author(s):  
B. Zhang ◽  
X. Gong ◽  
J. Qian ◽  
R. Ding ◽  
J. Huang ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Helium Plasma ◽  
Frequency Wave ◽  
Mode Operation ◽  
Wave Heating ◽  
Radio Frequency Wave
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