The kinetics of phase transition in systems with nonconservative order parameter

1982 ◽  
Vol 32 (7) ◽  
pp. 772-776 ◽  
Author(s):  
O. I. Gerasimov ◽  
I. Z. Fischer ◽  
V. Lisý
Keyword(s):  
Phase Transition ◽  
Order Parameter ◽  
Kinetics Of

Temperature Effect on the Two-Dimensional Phase Transition Kinetics of Adenine Adsorbed at the Hg Electrode/Aqueous Solution Interface

2003 ◽  
Vol 68 (8) ◽  
pp. 1407-1419 ◽  
Author(s):  
Claudio Fontanesi ◽  
Roberto Andreoli ◽  
Luca Benedetti ◽  
Roberto Giovanardi ◽  
Paolo Ferrarini
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Phase Change ◽  
Temperature Effect ◽  
Transition Rate ◽  
Effect Of Temperature ◽  
Two Dimensional ◽  
Solution Interface ◽  
Phase Transition Kinetics ◽  
Kinetics Of

The kinetics of the liquid-like → solid-like 2D phase transition of adenine adsorbed at the Hg/aqueous solution interface is studied. Attention is focused on the effect of temperature on the rate of phase change; an increase in temperature is found to cause a decrease of transition rate.

Kinetics of the γ–δ phase transition in energetic nitramine-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine

2019 ◽  
Vol 150 (6) ◽  
pp. 064705 ◽  
Author(s):  
P. Bowlan ◽  
B. F. Henson ◽  
L. Smilowitz ◽  
V. I. Levitas ◽  
N. Suvorova ◽  
...  
Keyword(s):  
Phase Transition ◽  
Δ Phase ◽  
Kinetics Of

An Explanation of the Removal of Metastability in Some Hydroacid Salts by Water Adsorption

2001 ◽  
Vol 56 (12) ◽  
pp. 869-872
Author(s):  
B. Baranowski ◽  
A. Lundén
Keyword(s):  
Phase Transition ◽  
Surface Layer ◽  
Water Activity ◽  
Induction Time ◽  
Lattice Spacing ◽  
Water Adsorption ◽  
Zeroth Order ◽  
Exponential Functions ◽  
Kinetics Of ◽  
Volume Decrease

Abstract The metastability of some phases of CsHSO4 and RbH2PO4 is due to the volume decrease at an endothermic phase transition which "locks in" the metastability in question. Water adsorption, which removes these metastabilities, probably exerts a "wedge-like" force which expands the lattice spacing in the surface layer, thus facilitating the start of the phase transition. The induction time and the zeroth order kinetics of the transition in RbH2PO4 are exponential functions of the water activity applied.

Thermodynamics and kinetics of the phase transition ferroelectric smectic C* - nematic in electric fields

1993 ◽  
Vol 147 (1) ◽  
pp. 263-280 ◽  
Author(s):  
Sergel Pikin ◽  
Leonid Beresnev ◽  
Steffen Hiller ◽  
Wolfgang Haase
Keyword(s):  
Phase Transition ◽  
Electric Fields ◽  
Thermodynamics And Kinetics ◽  
Smectic C ◽  
Kinetics Of

The flattening phase transition in systems of trapped ions

2009 ◽  
Vol 87 (10) ◽  
pp. 1425-1435 ◽  
Author(s):  
Taunia L. L. Closson ◽  
Marc R. Roussel
Keyword(s):  
Phase Transition ◽  
Critical Exponent ◽  
Order Parameter ◽  
Ion Trap ◽  
Anisotropy Parameter ◽  
Critical Value ◽  
Trapped Ions ◽  
Dimensional Structure ◽  
Flattening Process ◽  
Second Order Phase Transition

When the anisotropy of a harmonic ion trap is increased, the ions eventually collapse into a two-dimensional structure consisting of concentric shells of ions. This collapse generally behaves like a second-order phase transition. A graph of the critical value of the anisotropy parameter vs. the number of ions displays substructure closely related to the inner-shell configurations of the clusters. The critical exponent for the order parameter of this phase transition (maximum extent in the z direction) was found computationally to have the value β = 1/2. A second critical exponent related to displacements perpendicular to the z axis was found to have the value δ = 1. Using these estimates of the critical exponents, we derive an equation that relates the amplitudes of the displacements of the ions parallel to the x–y plane to the amplitudes along the z axis during the flattening process.

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