scholarly journals Two component boson–fermion plasma at finite temperature

2018 ◽  
Vol 29 (03) ◽  
pp. 1850028 ◽  
Author(s):  
Riccardo Fantoni
Keyword(s):  
Computer Experiment ◽  
Point Of View ◽  
Path Integral Monte Carlo ◽  
Size Dependent ◽  
Quantum Matter ◽  
Two Component ◽  
Component Plasma ◽  
Bosonic Case ◽  
Fermionic Case ◽  
Oppositely Charged

We discuss thermodynamic stability of neutral real (quantum) matter from the point of view of a computer experiment at finite, nonzero, temperature. We perform (restricted) path integral Monte Carlo simulations of the two component plasma where the two species are both bosons, both fermions, and one boson and one fermion. We calculate the structure of the plasma and discuss about the formation of binded couples of oppositely charged particles. The purely bosonic case is thermodynamically unstable. In this case we find an undetermined size-dependent contact value unlike partial radial distribution function. For the purely fermionic case, we find a demixing transition with binding also of like species.

scholarly journals Effective potential and pressure of two-component plasma at high temperature

2014 ◽  
Vol 5 (2) ◽  
pp. 48-51
Author(s):  
Yu.V. Arkhipov ◽  
◽  
A. Askaruly ◽  
A.E. Davletov ◽  
D. Dubovtsev ◽  
...  
Keyword(s):  
High Temperature ◽  
Effective Potential ◽  
Two Component ◽  
Component Plasma

scholarly journals Solitary Magnetosonic Waves in Relativistic Plasma

1994 ◽  
Vol 47 (6) ◽  
pp. 757
Author(s):  
Joydeep Mukherjee ◽  
A Roy Chowdhury
Keyword(s):  
Mach Number ◽  
Solitary Wave ◽  
Effective Potential ◽  
Relativistic Plasma ◽  
Two Component ◽  
Component Plasma ◽  
Magnetic Filed

We have analysed the formation of solitary magnetosonic waves propagating in a direction perpendicular to the magnetic filed in a relativistic two component plasma. Our approach is that of the effective potential. Variations of the effective potential and the solitary wave in relation to the Mach number and other parameters are discussed.

Counter differential rigid-rotation equilibrium of electrically non-neutral two-fluid plasma with finite pressure

2021 ◽  
Vol 87 (4) ◽  
Author(s):  
Y. Nakajima ◽  
H. Himura ◽  
A. Sanpei
Keyword(s):  
Ion Plasma ◽  
Counter Rotation ◽  
Fluid Velocities ◽  
Two Component ◽  
Component Plasma ◽  
Ion Cloud ◽  
Diamagnetic Drift ◽  
First Time ◽  
Two Fluid ◽  
Two Fluid Plasma

We derive the two-dimensional counter-differential rotation equilibria of two-component plasmas, composed of both ion and electron ( $e^-$ ) clouds with finite temperatures, for the first time. In the equilibrium found in this study, as the density of the $e^{-}$ cloud is always larger than that of the ion cloud, the entire system is a type of non-neutral plasma. Consequently, a bell-shaped negative potential well is formed in the two-component plasma. The self-electric field is also non-uniform along the $r$ -axis. Moreover, the radii of the ion and $e^{-}$ plasmas are different. Nonetheless, the pure ion as well as $e^{-}$ plasmas exhibit corresponding rigid rotations around the plasma axis with different fluid velocities, as in a two-fluid plasma. Furthermore, the $e^{-}$ plasma rotates in the same direction as that of $\boldsymbol {E \times B}$ , whereas the ion plasma counter-rotates overall. This counter-rotation is attributed to the contribution of the diamagnetic drift of the ion plasma because of its finite pressure.

scholarly journals Slight pH Fluctuations in the Gold Nanoparticle Synthesis Process Influence the Performance of the Citrate Reduction Method

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2246 ◽  
Author(s):  
Braulio Contreras-Trigo ◽  
Víctor Díaz-García ◽  
Enrique Guzmán-Gutierrez ◽  
Ignacio Sanhueza ◽  
Pablo Coelho ◽  
...  
Keyword(s):  
Large Scale ◽  
Colloidal Suspension ◽  
Nanoparticle Synthesis ◽  
Trisodium Citrate ◽  
Gold Surface ◽  
Point Of View ◽  
Synthesis Process ◽  
Reaction Yield ◽  
Size Dependent ◽  
Gold Nanoparticle Synthesis

Gold nanoparticles (AuNPs) are currently under intense investigation for biomedical and biotechnology applications, thanks to their ease in preparation, stability, biocompatibility, multiple surface functionalities, and size-dependent optical properties. The most commonly used method for AuNP synthesis in aqueous solution is the reduction of tetrachloroauric acid (HAuCl4) with trisodium citrate. We have observed variations in the pH and in the concentration of the gold colloidal suspension synthesized under standard conditions, verifying a reduction in the reaction yield by around 46% from pH 5.3 (2.4 nM) to pH 4.7 (1.29 nM). Citrate-capped AuNPs were characterized by UV-visible spectroscopy, TEM, EDS, and zeta-potential measurements, revealing a linear correlation between pH and the concentration of the generated AuNPs. This result can be attributed to the adverse effect of protons both on citrate oxidation and on citrate adsorption onto the gold surface, which is required to form the stabilization layer. Overall, this study provides insight into the effect of the pH over the synthesis performance of the method, which would be of particular interest from the point of view of large-scale manufacturing processes.

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