Role of low-frequency power in dual-frequency capacitive discharges

2009 ◽  
Vol 95 (11) ◽  
pp. 111502 ◽  
Author(s):  
S. K. Ahn ◽  
H. Y. Chang
Keyword(s):  
Low Frequency ◽  
Dual Frequency ◽  
Low Frequency Power ◽  
Capacitive Discharges ◽  
Frequency Power

Effect of low-frequency power on dual-frequency capacitively coupled plasmas

2008 ◽  
Vol 41 (20) ◽  
pp. 205209 ◽  
Author(s):  
Q H Yuan ◽  
Y Xin ◽  
G Q Yin ◽  
X J Huang ◽  
K Sun ◽  
...  
Keyword(s):  
Low Frequency ◽  
Dual Frequency ◽  
Capacitively Coupled ◽  
Low Frequency Power ◽  
Coupled Plasmas ◽  
Frequency Power

Effect of Low-frequency Power on F, CF2Relative Density and F/CF2Ratio in Fluorocarbon Dual-Frequency Plasmas

2010 ◽  
Vol 12 (5) ◽  
pp. 566-570 ◽  
Author(s):  
Huang Hongwei ◽  
Ye Chao ◽  
Xu Yijun ◽  
Yuan Yuan ◽  
Shi Guofeng ◽  
...  
Keyword(s):  
Low Frequency ◽  
Dual Frequency ◽  
Low Frequency Power ◽  
Frequency Power

scholarly journals The Role of Low Frequency Power in the Relationship Between Exercise and Memory

2018 ◽  
Vol 50 (5S) ◽  
pp. 86
Author(s):  
Alexis B. Slutsky ◽  
Jennifer L. Etnier ◽  
Sudharania Arunachalam ◽  
Laurie Wideman
Keyword(s):  
Low Frequency ◽  
Low Frequency Power ◽  
The Relationship ◽  
Frequency Power

scholarly journals Toward asleep DBS: cortico-basal ganglia spectral and coherence activity during interleaved propofol/ketamine sedation mimics NREM/REM sleep activity

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Jing Guang ◽  
Halen Baker ◽  
Orilia Ben-Yishay Nizri ◽  
Shimon Firman ◽  
Uri Werner-Reiss ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Rem Sleep ◽  
Standard Procedure ◽  
Low Frequency ◽  
Nrem Sleep ◽  
Sleep Cycle ◽  
Advanced Parkinson’S Disease ◽  
Low Frequency Power ◽  
The Brain ◽  
Frequency Power

AbstractDeep brain stimulation (DBS) is currently a standard procedure for advanced Parkinson’s disease. Many centers employ awake physiological navigation and stimulation assessment to optimize DBS localization and outcome. To enable DBS under sedation, asleep DBS, we characterized the cortico-basal ganglia neuronal network of two nonhuman primates under propofol, ketamine, and interleaved propofol-ketamine (IPK) sedation. Further, we compared these sedation states in the healthy and Parkinsonian condition to those of healthy sleep. Ketamine increases high-frequency power and synchronization while propofol increases low-frequency power and synchronization in polysomnography and neuronal activity recordings. Thus, ketamine does not mask the low-frequency oscillations used for physiological navigation toward the basal ganglia DBS targets. The brain spectral state under ketamine and propofol mimicked rapid eye movement (REM) and Non-REM (NREM) sleep activity, respectively, and the IPK protocol resembles the NREM-REM sleep cycle. These promising results are a meaningful step toward asleep DBS with nondistorted physiological navigation.

Cortical low‐frequency power correlates with behavioral impairment in animal model of focal limbic seizures

Epilepsia ◽  
2021 ◽  
Author(s):  
Abhijeet Gummadavelli ◽  
Reese Martin ◽  
Derek Goshay ◽  
Lim‐Anna Sieu ◽  
Jingwen Xu ◽  
...  
Keyword(s):  
Animal Model ◽  
Low Frequency ◽  
Behavioral Impairment ◽  
Limbic Seizures ◽  
Low Frequency Power ◽  
Frequency Power

Low-frequency heating of doublets

1981 ◽  
Vol 25 (1) ◽  
pp. 133-143 ◽  
Author(s):  
T. H. Jensen ◽  
F. W. McClain ◽  
H. Grad
Keyword(s):  
Physical Model ◽  
Linear Theory ◽  
Low Frequency ◽  
Plasma Temperature ◽  
Auxiliary Heating ◽  
Power Sources ◽  
Axisymmetric Mode ◽  
Low Frequency Power ◽  
Frequency Power ◽  
Frequency Heating

Heating of a doublet plasma by driving an axisymmetric mode at low frequency may be an attractive means for auxiliary heating. The attractiveness of the method stems from (1) the low technology required for low-frequency power sources, (2) the fact that the field-shaping coils required for doublets may also be used as the antennae for transmitting the power, (3) the possibility of transmitting the power through a resistive vacuum wall, (4) the insensitivity to the plasma temperature and density and (5) the relative simplicity of the physical model. The utility of the concept depends on the existence of a special axisymmetric eigenmode in the resistive M.HD approximation which is used. This mode has nodes through the elliptic axes of the doublet equilibrium and an antinode at the hyperbolic axis. It is remarkable that the dissipation per cycle of this mode remains large at low plasma resistivity. This paper describes a linear theory for such heating.

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