Study of moving striations in plasmas. V. A study of the saturation process in large amplitude moving striations

1969 ◽  
Vol 47 (7) ◽  
pp. 779-785 ◽  
Author(s):  
Richard Bolton ◽  
Miloš Šícha ◽  
Michel G. Drouet
Keyword(s):  
Electric Field ◽  
Electron Temperature ◽  
External Electric Field ◽  
Large Amplitude ◽  
Small Amplitude ◽  
Potential Drop ◽  
Plasma Potential ◽  
Temperature Plasma ◽  
Current Limit

Measurements made near the Pupp current limit for the existence of moving striations in neon illustrate the process of saturation of moving striations as the column amplification increases. The measurements show that the nature of the striations changes from the characterization of Pekárek for small amplitude to that of Nedospasov for large amplitude as the plasma potential variation in the striation approaches the potential drop of the external electric field per striation wavelength. Measurements of the relative phases of electron temperature, plasma potential, and luminous intensity for striations near the Pupp current limit are presented.

Study of moving striations in plasmas. I. Measurement of the phase between the variations of several plasma parameters

1968 ◽  
Vol 46 (16) ◽  
pp. 1787-1793 ◽  
Author(s):  
Michel G. Drouet ◽  
Miloš Šicha
Keyword(s):  
Light Intensity ◽  
Electric Field ◽  
Electron Temperature ◽  
Discharge Current ◽  
Plasma Potential ◽  
Plasma Parameters ◽  
Temperature Plasma ◽  
Continuous Waves ◽  
Slow Moving ◽  
Made In

The phases between the variations of electron density, electron temperature, plasma potential, electric field, and light intensity have been measured in slow-moving striations in a neon discharge for different values of the discharge current. The reported measurements were made in moving striations artificially excited in the form of both continuous waves and wave of stratification.

Trade-off in perpendicular electric field control using negatively biased emissive end-electrodes

2022 ◽  
Author(s):  
Baptiste Trotabas ◽  
Renaud Gueroult
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Thermionic Emission ◽  
Potential Drop ◽  
Plasma Potential ◽  
Magnetized Plasma ◽  
Trade Off ◽  
Sheath Edge ◽  
Field Control ◽  
Field Lines

Abstract The benefits of thermionic emission from negatively biased electrodes for perpendicular electric field control in a magnetized plasma are examined through its combined effects on the sheath and on the plasma potential variation along magnetic field lines. By increasing the radial current flowing through the plasma thermionic emission is confirmed to improve control over the plasma potential at the sheath edge compared to the case of a cold electrode. Conversely, thermionic emission is shown to be responsible for an increase of the plasma potential drop along magnetic field lines in the quasi-neutral plasma. These results suggest that there exists a trade-off between electric field longitudinal uniformity and amplitude when using negatively biased emissive electrodes to control the perpendicular electric field in a magnetized plasma.

scholarly journals Characterization of Particles Triboelectrically Charged by a Two-Stage System Using Vibration and External Electric Field

2013 ◽  
Vol 50 (12) ◽  
pp. 832-839 ◽  
Author(s):  
Megumi Mizutani ◽  
Koichi Takeda ◽  
Masatoshi Yasuda ◽  
Shuji Matsusaka
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Two Stage ◽  
Stage System

Plasma potential in the presence of an external electric field

2001 ◽  
Vol 90 (8) ◽  
pp. 3713-3719 ◽  
Author(s):  
Hitoshi Kurosawa ◽  
Shuichi Hasegawa ◽  
Atsuyuki Suzuki
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Plasma Potential

Stability and spatial characterization of electron cyclotron resonance processing plasmas

1991 ◽  
Vol 69 (3-4) ◽  
pp. 195-201 ◽  
Author(s):  
P. K. Shufflebotham ◽  
D. J. Thomson
Keyword(s):  
Electron Temperature ◽  
Plasma Density ◽  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Plasma Potential ◽  
Electron Cyclotron ◽  
Temperature Plasma ◽  
Ecr Plasma ◽  
The Stability ◽  
System Variables

This paper presents preliminary measurements of the spatial variation of the plasma density, electron temperature, plasma potential, and floating voltage within a divergent magnetic field electron cyclotron resonance (ECR) plasma processing reactor. The measurements are performed using an orbital-motion-limited cylindrical Langmuir probe designed specifically for use in these plasmas. A brief discussion of the stability and uniformity of divergent field plasmas in general, and qualitative techniques for the diagnosis of these properties, is also given. It was found that these plasmas generally occurred in distinct "modes," characterized by unique shapes and dependences on system variables, and between which discontinuous, noisy, and often bistable transitions occurred. Axially resolved probe measurements performed under ECR conditions showed that the plasma density exhibited a broadly peaked profile, while the electron temperature showed a sharp peak at ECR. The differences in these profiles leads to three qualitatively different plasma regions available for use in ECR processing. The variation of the plasma potential explains the origin of the axial ion beams that commonly occur in these systems.

NONLINEAR TRANSPORT IN HYDROGEN-BONDED CHAINS: SOLITONS UNDER EXTERNAL FIELDS AND DAMPING

1994 ◽  
Vol 08 (08) ◽  
pp. 1033-1064 ◽  
Author(s):  
YU.S. KIVSHAR ◽  
A.V. SAVIN ◽  
M.J. VELGAKIS ◽  
A.V. ZOLOTARYUK
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Small Amplitude ◽  
Nonlinear Transport ◽  
Dimensional Model ◽  
One Dimensional ◽  
Envelope Solitons ◽  
Oscillating Solutions ◽  
Two Parameter ◽  
Hydrogen Bonded

The longitudinal dynamics of protons in hydrogen-bonded chains is studied in the framework of a simple one-component one-dimensional model with a two-parameter doubly periodic symmetric on-site potential proposed by Zolotaryuk and Pnevmatikos (1990) under an external electric field and damping. The behavior of the ionic and bonding defects has been proved analytically and numerically to exhibit particle-like properties. Mobilities of the dc and ac driven defects have also been calculated with different methods. Small-amplitude oscillating solutions of breather and envelope solitons have been studied analytically and numerically.

Sign in / Sign up

Export Citation Format

Share Document