Results 221 to 230 of about 18,304 (280)
The Journal of Chemical Physics, 1949 Formulas are given for an approximation to the energy values of the levels of the asymmetric rotor when the latter are essentially twofold degenerate. The method of arriving at these formulas follows that described recently, in which the energy matrix is examined under conditions where J→∞.
Sidney Golden, J. K. Bragg
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Effective disappearance of degenerating energy levels
Physical Review A, 1995 Inverse spectral theory provides a theorem on the shifting of a single level, leaving all others unchanged, in a quantum-mechanical system over a finite range in one dimension. We show that the mechanism can be used to remove a pair of states from the spectrum by shifting the energy of one state onto that of a neighboring state. We extend the procedure
V. M. Chabanov +4 more
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Resonant Degenerate Four-Wave Mixing at the Defect Energy Levels of 2D Organic–Inorganic Hybrid Perovskite Crystals [PDF]
ACS Applied Materials & Interfaces, 2021 Two-dimensional organic-inorganic lead halide perovskites are generating great interest due to their optoelectronic characteristics such as high solar energy conversion efficiency and a tunable direct band gap in the visible regime. However, the presence of defect states within the two-dimensional crystal structure can affect these properties ...
Brian Ko +7 more
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Kinetic theory of light-induced drift of particles with degenerate energy levels
Journal of Physics A: Mathematical and General, 1986 The theory of light-induced drift of particles with degenerate levels is proposed. Kinetic equations which are semiclassical with respect to rotational degrees of freedom and with a phase memory accounting are obtained. The drift velocity dependence on radiation polarisation is predicted. Numerical calculation, which has been made in a strong collision
Faris Gel’mukhanov +2 more
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Population of Landau energy levels by charged particles of degenerate magnetized Fermi gases
Russian Physics Journal, 1994 The population of the Landau energy levels (from the zero level to the maximum level) is determined as a function of the quantizing magnetic field strength and the charged-particle concentration, for nonrelativistic proton and electron gases and relativistic electron gases.
G. A. Shul’man
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Mean occupation number for noninteracting paraparticles in degenerate energy levels
American Journal of Physics, 1996 The combinatorial solution of finding the number of ways of distributing n particles into g distinguishable groups such that no group contains fewer than q objects or more than q+a objects is used to obtain the mean occupation number of noninteracting paraparticles in degenerate energy levels.
R. Kishore
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Zero-field Energy Levels in Near-doubly-degenerate Triplet States
Bulletin of the Chemical Society of Japan, 1982 Abstract The zero-field energy levels in neardoubly-degenerate triplet states are discussed on molecules which are distorted so as to lose their trigonal symmetry axes. As an example, the second excited triplet states of a deformed benzene molecule are calculated from the electron spin-spin interactions.
Jiro Higuchi
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The Journal of Chemical Physics, 1963 Expressions for the energies of the rotational levels associated with a nearly degenerate A1A2 pair of vibronic states in a molecule of symmetry C3v are presented. These expressions take into consideration Coriolis interaction between the levels associated with the A1 vibronic state and the levels associated with the A2 vibronic state.
Jon T. Hougen
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Russian Physics Journal, 2005 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
V. S. Kostko, G. A. Shul’man
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Journal of Chemical Education, 2012 Teaching the Jahn-Teller theorem offers several challenges. For many students, the first encounter comes in coordination chemistry, which can be difficult due to the already complicated nature of transition-metal complexes. Moreover, a deep understanding of the Jahn-Teller theorem requires that one is well acquainted with quantum mechanics and group ...
Adam Johannes Johansson
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