scholarly journals Thermonuclear burn of DT and DD fuels using three-temperature model: Non-equilibrium effects

2012 ◽  
Vol 30 (4) ◽  
pp. 517-523 ◽  
Author(s):  
Bishnupriya Nayak ◽  
S.V.G. Menon
Keyword(s):  
Low Temperature ◽  
Temperature Regime ◽  
Energy Production ◽  
Hot Spot ◽  
Spot Size ◽  
Temperature Model ◽  
Temperature Modeling ◽  
Fuel Density ◽  
Thermonuclear Ignition ◽  
Non Equilibrium

AbstractConditions for thermonuclear ignition are determined by three parameters: fuel density, temperature and hot-spot size. A simple three temperature model is developed to calculate the critical burn-up parameter or the minimum ρR product. Extensive results obtained are compared with earlier one temperature model for DT and DD fuels. While the two approaches are found to provide similar results for DT fuel except at low temperature regime (~10 keV), three temperature modeling is found to be necessary for DD fuel. This is argued to be due to the lower fusion reactivity and energy production in DD reactions.

Low-temperature GaSb bolometer for non-equilibrium phonon pulse detection

2000 ◽  
Vol 33 (21) ◽  
pp. L125-L128 ◽  
Author(s):  
B M Taele ◽  
N S Lawson ◽  
J K Wigmore
Keyword(s):  
Low Temperature ◽  
Pulse Detection ◽  
Non Equilibrium

Stability of non-equilibrium nickel hydrides prepared by low-temperature ion implantation

1981 ◽  
Vol 68 (2) ◽  
pp. 619-627 ◽  
Author(s):  
L. Brossard ◽  
L. Thomé ◽  
A. Traverse ◽  
H. Bernas ◽  
J. Chaumont ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ion Implantation ◽  
Nickel Hydrides ◽  
Non Equilibrium

scholarly journals Radicals and Non-Equilibrium Processes in Low-Temperature Plasmas

2007 ◽  
Vol 86 ◽  
pp. 011001 ◽  
Author(s):  
Zoran Petrović ◽  
Nigel Mason ◽  
Satoshi Hamaguchi ◽  
Marija Radmilović-Radjenović
Keyword(s):  
Low Temperature ◽  
Equilibrium Processes ◽  
Low Temperature Plasmas ◽  
Non Equilibrium

scholarly journals The role of spin–orbit effects in the mobility of N+ ions moving in a helium gas at low temperature

2020 ◽  
Vol 74 (7) ◽  
Author(s):  
Lamia Aïssaoui ◽  
Peter J. Knowles ◽  
Moncef Bouledroua
Keyword(s):  
Low Temperature ◽  
Cross Sections ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Temperature Model ◽  
Helium Gas ◽  
Spin Orbit Interactions ◽  
High Level

Abstract The mobility of N+ ions in ground-state helium gas at very low temperature is examined with explicit inclusion of spin–orbit coupling effects. The ionic kinetics is treated theoretically with the three-temperature model. The N+–He interaction potentials, including spin–orbit coupling, are determined using high-level ab initio calculations. Then, the classical and quantal transport cross sections, both needed in the computation of the mobility coefficients, are calculated in terms of the collisional energy of the N+–He system. The numerical results, at temperature 4.3 K, show the spin–orbit interactions have negligible effect on the mobility coefficients. Graphical abstract

scholarly journals Achieving excellent superplasticity of Mg-7Zn-5Gd-0.6Zr alloy at low temperature regime

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Siqi Yin ◽  
Zhiqiang Zhang ◽  
Jiamin Yu ◽  
Zilong Zhao ◽  
Min Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Regime

Innovative technologies for energy production from low temperature heat sources: critical literature review and thermodynamic analysis.

2021 ◽  
Author(s):  
Doriano Brogioli ◽  
Fabio LaMantia
Keyword(s):  
Low Temperature ◽  
Literature Review ◽  
Thermodynamic Analysis ◽  
Carbon Footprint ◽  
Energy Production ◽  
Scientific Community ◽  
Heat Sources ◽  
Innovative Methods ◽  
Temperature Heat ◽  
Critical Literature

The scientific community has taken on the challenge to develop innovative methods to exploit low-temperature (<100°C) heat sources, having a large potential to decrease the carbon footprint. In this review,...

scholarly journals The quasi-low temperature behaviour of specific heat

2019 ◽  
Vol 6 (1) ◽  
pp. 171285 ◽  
Author(s):  
Yuri Vladimirovich Gusev
Keyword(s):  
Field Theory ◽  
Experimental Data ◽  
Low Temperature ◽  
Specific Heat ◽  
Temperature Regime ◽  
Silver Chloride ◽  
Condensed Matter ◽  
Fourth Power ◽  
Temperature Behaviour ◽  
Lattice Materials

A new mathematical approach to condensed matter physics, based on the finite temperature field theory, was recently proposed. The field theory is a scale-free formalism; thus, it denies absolute values of thermodynamic temperature and uses dimensionless thermal variables, which are obtained with the group velocities of sound and the interatomic distance. This formalism was previously applied to the specific heat of condensed matter and predicted its fourth power of temperature behaviour at sufficiently low temperatures, which was tested by experimental data for diamond lattice materials. The range of temperatures with the quartic law varies for different materials; therefore, it is called the quasi-low temperature regime. The quasi-low temperature behaviour of specific heat is verified here with experimental data for the fcc lattice materials, silver chloride and lithium iodide. The conjecture that the fourth order behaviour is universal for all condensed matter systems has also supported the data for glassy matter: vitreous silica. This law is long known to hold for the bcc solid helium-4. The characteristic temperatures of the threshold of the quasi-low temperature regime are found for the studied materials. The scaling in the specific heat of condensed matter is expressed by the dimensionless parameter, which is explored with the data for several glasses. The explanation of the correlation of the ‘boson peak’ temperature with the shear velocity is proposed. The critique of the Debye theory of specific heat and the Born–von Karman model of the lattice dynamics is given.

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