Results 241 to 250 of about 1,744,611 (325)

Tuning the Performance of Metalloporphyrin-Based Pressure-Sensitive Paints through the Nature of the Central Metal Ion. [PDF]

ACS Omega
Nunn EJ, Tsioumanis D, Whitehead GFS, Fisher TB, Roberts DA, Quinn MK, Natrajan LS.   +6 more
europepmc   +1 more source

Two-Dimensional Electronic Spectroscopy of Rhodamine 700 Using an 8 fs Ultrabroadband Laser Source and Full-Wavelength Reference Detection. [PDF]

J Phys Chem A
Gajo C, Jordan CJC, Oliver TAA.
europepmc   +1 more source

Normal modes for electromagnetically induced transparency in a lambda system of degenerate energy levels

Quantum Electronics, 2018
This paper presents an analytical study of the formation of normal modes of probe light for electromagnetically induced transparency in a lambda system of quantum transitions between 3P0, and 3P2 levels in the case of an elliptically polarised control ...
О М Паршков
semanticscholar   +4 more sources

Adiabatic Theorem Violation for Degenerate Energy Levels

Physica Scripta, 1999
For the exactly solvable model of a two-mode oscillator with slowly varying frequency of one of the modes it is demonstrated that such a quantum number as the angular momentum of the oscillator is not conserved in the adiabatic limit.
V. I. Man’ko, T. H. Seligman
semanticscholar   +5 more sources

Diagrammatic analysis of adiabatic and time-independent perturbation theory for degenerate energy levels

Chemical Physics Letters, 1978
Time-ordered folded diagrams are used to represent the effective hamiltonian in the adiabatic formalism. Resummation of the diagrams is shown to give a term-by-term correspondence with time-independent perturbation ...
M. A. J. Michels, L.G. Suttorp
semanticscholar   +5 more sources

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, L. V. Il’ichov, A. M. Shälagin   +2 more
semanticscholar   +4 more sources

An Asymptotic Expression for the Energy Levels of the Asymmetric Rotor. III. Approximation for the Essentially Degenerate Levels of the Rigid Rotor

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
semanticscholar   +4 more sources

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
semanticscholar   +4 more sources

Energy Levels of Direct Excitons in Semiconductors with Degenerate Bands

Physical Review B, 1971
A. Baldereschi, Nunzio C. Lipari
semanticscholar   +4 more sources