Modeling the random transition between two temperature profiles in magnetized plasma

2010 ◽  
Vol 82 (1) ◽  
pp. 015502
Author(s):  
N Pometescu ◽  
B Weyssow
Keyword(s):  
Magnetized Plasma ◽  
Temperature Profiles ◽  
Random Transition ◽  
Two Temperature

scholarly journals Electron acoustic solitons in the Earth's magnetotail

2004 ◽  
Vol 11 (2) ◽  
pp. 215-218 ◽  
Author(s):  
S. G. Tagare ◽  
S. V. Singh ◽  
R. V. Reddy ◽  
G. S. Lakhina
Keyword(s):  
Electron Beam ◽  
Small Amplitude ◽  
Low Frequency ◽  
Frequency Component ◽  
Magnetized Plasma ◽  
Cold Electron ◽  
Ion Plasma ◽  
Electron Acoustic ◽  
Two Temperature ◽  
Perpendicular Polarization

Abstract. Small amplitude electron - acoustic solitons are studied in a magnetized plasma consisting of two types of electrons, namely cold electron beam and background plasma electrons and two temperature ion plasma. The analysis predicts rarefactive solitons. The model may provide a possible explanation for the perpendicular polarization of the low-frequency component of the broadband electrostatic noise observed in the Earth's magnetotail.

Zakharov-Kuznetsov equation in a magnetized plasma with two temperature superthermal electrons

2014 ◽  
Vol 21 (2) ◽  
pp. 022114 ◽  
Author(s):  
N. S. Saini ◽  
B. S. Chahal ◽  
A. S. Bains ◽  
C. Bedi
Keyword(s):  
Magnetized Plasma ◽  
Superthermal Electrons ◽  
Two Temperature

scholarly journals Effect of two temperature electrons in a collisional magnetized plasma sheath

2020 ◽  
Vol 95 (3) ◽  
pp. 035605
Author(s):  
G Sharma ◽  
S Adhikari ◽  
R Moulick ◽  
S S Kausik ◽  
B K Saikia
Keyword(s):  
Plasma Sheath ◽  
Magnetized Plasma ◽  
Two Temperature

A Study on Densification and Grain Growth of Ba(Ce,Zr)O3 Prepared by a Two-Step Sintering

2015 ◽  
Vol 819 ◽  
pp. 129-133 ◽  
Author(s):  
N.W. Othman ◽  
A. Ramli ◽  
N. Osman ◽  
S.S.C. Abdullah ◽  
M.E.A. Rahman
Keyword(s):  
Temperature Profile ◽  
Grain Growth ◽  
Sol Gel ◽  
Fine Powder ◽  
Metal Nitrate ◽  
Hydraulic Press ◽  
Temperature Profiles ◽  
Sem Images ◽  
Two Temperature ◽  
Better Than

Ultra-fine powder of Ba (Ce,Zr)O3 was prepared by a sol-gel method using metal nitrate salts as pre-cursor. The powder was compacted using hydraulic press with pressure of 45 kg/m2 for 5 min to produce four different pellets. They were sintered at two temperature profiles using two-step sintering (TSS) process. The first temperature profile was fixed at T1 = 1450°C and the second temperature profile was varies from T2 = 1300°C, 1350°C and 1400°C, respectively. For a comparison, the pellet was also sintered using conventional step sintering (CSS) with temperature of T = 1450°C. Scanning electron microscope (SEM) images for the fracture surface showed that the grain growth for the pellet sintered at T2 = 1350°C was suppressed compared to others. Majority of it grain size was in the range of 100 to 390 nm. For densification study, all the pellets sintered using TSS profile exhibited lower density than CSS method. Even though TSS method can retard the grain growth but in terms of densification, CSS method is better than TSS.

Cooling of a Very Hot Vertical Surface by a Falling Liquid Film

1974 ◽  
Vol 96 (2) ◽  
pp. 126-131 ◽  
Author(s):  
K. H. Sun ◽  
G. E. Dix ◽  
C. L. Tien
Keyword(s):  
Heat Transfer ◽  
Liquid Film ◽  
Vertical Surface ◽  
Temperature Profiles ◽  
Continuous Film ◽  
Falling Liquid Film ◽  
Biot Numbers ◽  
Transfer Mechanisms ◽  
Two Temperature ◽  
Good Agreement

The present study analyzes the cooling of a very hot vertical surface by a falling liquid film. An analytical model is developed to characterize this phenomenon in three distinctive regions: a dry region ahead of the wet front, a sputtering region immediately behind the wet front, and a continuous film region further upstream. The analysis leads to predictions of the wet front velocity, the sputtering length, and the temperature profiles with respect to the wet front. The heat transfer mechanisms are shown to be dependent upon two temperature parameters characterizing the initial wall temperature and the temperature range for sputtering, and two Biot numbers comparing the convective heat transfer in the liquid film region and the sputtering region with longitudinal heat conduction. The predictions are in good agreement with existing experimental results.

Determination of plasma density and temperature profiles using magneto-acoustic oscillations

1977 ◽  
Vol 18 (1) ◽  
pp. 127-138 ◽  
Author(s):  
M. H. Brennan ◽  
B. L. Jessup ◽  
I. R. Jones
Keyword(s):  
Oscillation Amplitude ◽  
Plasma Temperature ◽  
Diagnostic Technique ◽  
Laser Interferometry ◽  
Magnetized Plasma ◽  
Spectroscopic Techniques ◽  
Temperature Profiles ◽  
Acoustic Oscillations ◽  
Good Agreement

This paper reports on theoretical and experimental refinements in the use of forced radial magneto-acoustic oscillations of a magnetized plasma as a diagnostic technique. The theory of such oscillations is extended to include radial variations in electron number density, neutral atom density and plasma temperature. In experiments carried out in an argon afterglow plasma, observations of the radial variation of the oscillation amplitude, and of the total flux in the plasma, are combined with theory to yield radial density and temperature profiles. These profiles are in good agreement with independent measurements made using laser interferometry and spectroscopic techniques.

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