Analysis of Low-Frequency Instabilities in Low-Temperature Magnetized Plasma

2018 ◽  
pp. 93-106
Author(s):  
Dan-Gheorghe Dimitriu ◽  
Maricel Agop
Keyword(s):  
Low Temperature ◽  
Low Frequency ◽  
Magnetized Plasma

scholarly journals Some experiments with the tunnel probe in a low temperature magnetized plasma

2018 ◽  
Vol 958 ◽  
pp. 012007
Author(s):  
J. Kovačič ◽  
T. Gyergyek ◽  
B. Kavaš ◽  
M. Vodnik ◽  
J. Kavčič ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetized Plasma

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.

Low-frequency single-crystal Raman, far-infrared, and inelastic neutron scattering studies of acetanilide at low temperature

1991 ◽  
Vol 95 (13) ◽  
pp. 5281-5286 ◽  
Author(s):  
Clifford T. Johnston ◽  
Stephen F. Agnew ◽  
Juergen Eckert ◽  
Llewellyn H. Jones ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Low Temperature ◽  
Neutron Scattering ◽  
Single Crystal ◽  
Inelastic Neutron Scattering ◽  
Low Frequency ◽  
Far Infrared ◽  
Inelastic Neutron

The 21-cm Line

2013 ◽  
Author(s):  
Abraham Loeb ◽  
Steven R. Furlanetto
Keyword(s):  
Low Temperature ◽  
Cosmic Microwave Background ◽  
Optical Depth ◽  
Intergalactic Medium ◽  
Transition Energy ◽  
Low Frequency ◽  
Hyperfine Line ◽  
Microwave Background ◽  
Spin Flip ◽  
Line P

This chapter describes how the 21-cm line is used to study the high-z Universe. It introduces the spin-flip or the hyperfine line—a transition driven by the interaction of the spins of the proton and electron, whose relative directions affect the energy of the electron's orbit. An atom in the upper state eventually undergoes a spin-flip transition, emitting a photon with a wavelength of 21 cm. As the chapter shows, this transition is extremely weak, so the effective intergalactic medium (IGM) optical depth is only of the order of 1 percent: this makes the entire neutral IGM accessible during the cosmic dawn. Moreover, the transition energy is so low that it provides a sensitive thermometer of the low-temperature IGM, and as a low-frequency radio transition, it can be seen across the entirety of the IGM against the cosmic microwave background.

scholarly journals Structure and Physicochemical Properties of Water Treated under Methane with Low-Temperature Glow Plasma of Low Frequency

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1638 ◽  
Author(s):  
Aleksandra Ciesielska ◽  
Wojciech Ciesielski ◽  
Karen Khachatryan ◽  
Henryk Koloczek ◽  
Damian Kulawik ◽  
...  
Keyword(s):  
Low Temperature ◽  
Physicochemical Properties ◽  
Treatment Time ◽  
Low Frequency ◽  
Aqueous Solubility ◽  
Physicochemical Characteristics ◽  
Scanning Calorimetry ◽  
Spin Resonance ◽  
Reflectance Ftir ◽  
Glow Plasma

Our former studies delivered a strong evidence that water indirectly treated with low-temperature, low-pressure glow plasma of low frequency (GP) changed its structure depending on the atmosphere in which such treatment was performed (air, ammonia, and nitrogen) and on the time of the treatment (0 to 120 min). In every case, water of different physicochemical characteristics and interesting biological functions was produced. Therefore, the relevant studies were extended to treating deionized water with GP under methane. The resulting samples were characterized by means of ultraviolet/visible (UV/VIS), Fourier transformation infrared-attenuated total reflectance (FTIR-ATR), electron spin resonance (ESR) and Raman spectroscopies, differential scanning calorimetry (DSC), thermogravimetry, pH, conductivity, and refractive index. The generated samples of water had entirely different physicochemical properties from those recorded for water treated with GP in the air and under both ammonia and nitrogen. The treatment of water with GP under methane did not produce clathrates hosting methane molecules. Thermogravimetry delivered an evidence that the treatment with GP increased the aqueous solubility of methane. That solubility non-linearly changed against the treatment time.

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