Metastable state, in physics and chemistry, particular excited state of an atom, nucleus, or other system that has a longer lifetime than the ordinary excited states and that generally has a shorter lifetime than the lowest, often stable, energy state, c
1.Metall.chemically unstable in the absence of certain conditions that would induce stability, but not liable to spontaneous transformation. 2.Physics, Chem.pertaining to a body or system that requires the addition of a small amount of energy to induce a transition to a more stable state at a...
The central assumption is that the existence of the considered metastable state is determined by the action of this additional dynamical constraint, that blocks the evolution of the system up to its maximum Entropy state, thus maintaining it in the metastable or stationary configuration. After ...
These levels decay by direct fluorescence and by predissociation after tunnelling through the potential energy barrier of the I 1Πg state. We present ab initio results for both of these decay processes for H2, HD and D2. The theoretical calculations provide an explanation of the rotational ...
AJ Bray,MA Moore - 《Journal of Physics C Solid State Physics》 被引量: 83发表: 1981年 Metastable States in Spin Glasses and Disordered Ferromagnets We study analytically M-spin-flip stable states in disordered short-ranged Ising models (spin glasses and ferromagnets) in all dimensions and for...
We also define a dynamics for M=infinity, which provides a potential tool for investigating ground state structure. 展开 关键词: Lattice theory and statistics Spin-glass and other random models Spin glasses and other random magnets Metastable phases ...
Owing to premature brittle fracture prior to plastic yielding in the tensile manner in Ti-10Cr aged samples, the fracture strength σf might not represent the intrinsic strength of the (β + ω) components. We thus performed compression testing whereby utilizing the soft stress state to mitigate...
In this work, we studied the relaxation kinetics of the metastable acidic state in different solvents including water, ethanol, and DMSO. In all of these solvents, the kinetic data can be fitted well to a second-order rate equation, which indicates that protonation is involved in the rate-...
Lifetime of a metastable state at low noiseThe mean time for the trajectory of a randomly perturbed system to leave a domain of attraction is determined in the limit of weak noise. The method applies for the decay of metastable states and it generalizes results of nucleation theory....
Transition Between Ground State and Metastable States in Classical 2D Atoms Structural and static properties of a classical two-dimensional system consisting of a finite number of charged particles that are laterally confined by a ... M Kong,B Partoens,FM Peeters - 《Physical Review E Statistical...