scholarly journals Simulations of Cold Electroweak Baryogenesis: finding the optimal quench time

2017 ◽  
Vol 2017 (7) ◽  
Author(s):  
Zong-Gang Mou ◽  
Paul M. Saffin ◽  
Anders Tranberg
Keyword(s):  
Quench Time

Quench time lag and its statistical characteristics of NbTi mechanical PCS measured with pulsed current

1999 ◽  
Vol 9 (2) ◽  
pp. 1125-1128 ◽  
Author(s):  
J. Suehiro ◽  
D. Tsuji ◽  
K. Tsutsumi ◽  
S. Ohtsuka ◽  
M. Hara
Keyword(s):  
Time Lag ◽  
Statistical Characteristics ◽  
Pulsed Current ◽  
Quench Time

Magnetic energy dissipation during the current quench of disruption in EAST

2020 ◽  
Vol 86 (5) ◽  
Author(s):  
T. Tang ◽  
L. Zeng ◽  
D. L. Chen ◽  
R. S. Granetz ◽  
S. T. Mao ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Energy Balance ◽  
Eddy Current ◽  
Efficient Method ◽  
Magnetic Energy ◽  
Gas Injection ◽  
Plasma Current ◽  
Plasma Parameters ◽  
Speed Up ◽  
Quench Time

A disruption database characterizing the current quench of disruptions with ITER-like tungsten divertor has been developed on EAST. It provides a large number of plasma parameters describing the predisruptive plasma, current quench time, eddy current, and mitigation by massive impurity injection, which shows that the current quench time strongly depends on magnetic energy and post-disruption electron temperature. Further, the energy balance and magnetic energy dissipation during the current quench phase has been well analysed. Magnetic energy is also demonstrated to be dissipated mainly by ohmic reheating and inductive coupling, and both of the two channels have great effects on current quench time. Also, massive gas injection is an efficient method to speed up the current quench and increase the fraction of impurity radiation.

scholarly journals Transcription, torsional stress and the bending dynamics of DNA

2020 ◽  
Vol 4 (1) ◽  
pp. 30-32
Author(s):  
Subhamoy Singha Roy
Keyword(s):  
Phase Transition ◽  
Double Helix ◽  
Torsional Stress ◽  
Free Rotation ◽  
Base Pairs ◽  
Heisenberg Spin ◽  
Nonequilibrium Effect ◽  
Conformational Properties ◽  
Quench Time ◽  
Good Agreement

In this research, we found that the local opening of base pairs induces the formation of kinks which facilitates the bending of double helix. The conformational properties of DNA can be mapped onto the Heisenberg spin system and denaturation occurs through quantum phase transition (QPT) induced by a quench when the temperature effect is incorporated through the quench time. The nonequilibrium effect in QPT introduced through the quench generate defects like kinks end antikinks, the density of which depends on the quench time and hence on temperature. It is here argued that when we transcribe this result in the rod –like-chain (RLC) model of DNA, these defects correspond to bends. The dynamical formation of these bends during local denaturation associated with transcription hinders free rotation of the transcribed DNA and helps the torsional stress to propagate down the DNA. This explains the observed large torsional stress near the point of transcription. We have estimated the bend length which is found to be in good agreement with experiments.

Quench time modeling in propane ultrapyrolysis

1989 ◽  
Vol 67 (4) ◽  
pp. 608-614 ◽  
Author(s):  
John A. Nighswander ◽  
Richard S. Huntrods ◽  
Anil K. Mehrotra ◽  
Leo A. Behie
Keyword(s):  
Time Modeling ◽  
Quench Time

Effect of Quench Time Lag on the Succeeding Quench in the Parallel Mechanical PCS Circuit

1999 ◽  
pp. 1419-1422
Author(s):  
Shinya Ohtsuka ◽  
Daisuke Tsuji ◽  
Kouichi Tsutsumi ◽  
Junya Suehiro ◽  
Masanori Hara
Keyword(s):  
Time Lag ◽  
Quench Time

scholarly journals DEFECT DYNAMICS DURING A QUENCH IN A BÉNARD–MARANGONI CONVECTION SYSTEM

2001 ◽  
Vol 11 (11) ◽  
pp. 2887-2894 ◽  
Author(s):  
W. GONZÁLEZ-VIÑAS ◽  
S. CASADO ◽  
J. BURGUETE ◽  
H. MANCINI ◽  
S. BOCCALETTI
Keyword(s):  
Characteristic Time ◽  
Defect Formation ◽  
Marangoni Convection ◽  
Scaling Law ◽  
Interaction Region ◽  
Spatial Region ◽  
Defect Interaction ◽  
Dislocation Annihilation ◽  
Structure Versus ◽  
Quench Time

We report experimental evidence of defect formation and dynamics in a symmetry breaking transition for a conduction–convection Bénard–Marangoni system. As opposite to the behavior of perfect patterns, defects appear to interact in a spatial region, responsible for the formation of bounded states that survive much longer than the characteristic time scales. The analysis of the transient defect dynamics allows to define this defect interaction region in the space, giving rise to penta–hepta-like defects on top of the hexagonal pattern. Other defect configurations are shown to disappear rapidly either through dislocations moving toward the boundaries or through dislocation–dislocation annihilation. This evidence suggests that the scaling law of defects in the final structure versus quench time might be investigated by analyzing the probability of two or more dislocations to appear in the same interaction region.

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