optical transition वाक्य
उदाहरण वाक्य
मोबाइल
- *Optical transitions are rather sharp ( ~ 10 meV ) and strong.
- Optical transition radiation is emitted both in the forward direction and reflected by the interface surface.
- Thus optical transitions must preserve the total spin and occur between levels of the same total spin.
- This can be useful with resonance Raman for accurately determining optical transitions in structures with strong Van Hove singularities.
- Interband optical transitions happen at the scale of the lattice constant which is small compared to the exciton radius.
- It is well known that the optical transition of electrons and carriers are affected by other carriers and not only by the periodic lattice potential.
- Zero-phonon optical transitions, a process closely analogous to the M�ssbauer effect, can be observed in lattice-bound chromophores at low temperatures.
- There, the scintillation process is due to an optical transition of the [ [ bismuth | ] ] ion, a major constituent of the crystal.
- Although the optical transitions in lanthanide-doped nanoparticles essentially resemble those in bulk materials, the nanostructure amenable to surface modifications provides new opportunities for research.
- Although the optical transitions of the SiV center preserve the electron spin, the rapid phonon-induced mixing between the SiV orbital states causes spin decoherence.
- Therefore, already the Coulomb interaction among P _ \ mathbf { k } produces a new solid-state effect compared with optical transitions in simple atoms.
- To predict the optical transition with appropriate precision, one chooses an approximation, called the assumption of quasi-thermal distributions, of the electrons in the conduction band and of the holes in the valence band.
- *The dynamics is quite different for high energies, such as occur from an optical transition from a non-degenerate initial state with a high-symmetry ( JT undistorted ) equilibrium geometry into a JT distorted state.
- Due to this coupling among the excitations for all values of the crystal momentum \ hbar { \ mathbf k }, the optical excitations in semiconductor cannot be described on the level of isolated optical transitions but have to be treated as an interacting many-body quantum system.
- On first sight, it may seem strange to treat optical transitions of a collisional complex, which may exist just momentarily, for the duration of a fly-by encounter ( roughly 10 " 13 seconds ), in much the same way as this was long done for molecules in ordinary spectroscopy.
- His method of calculating the optical response of a crystal based on pseudopotentials for electronic band structure and on the analysis of symmetry at the critical point is developed in one of his most significant publications, " Electronic States and Optical Transitions in Solids " ( with G . Pastori Parravicini, Pergamon Press, Oxford 1975 ).
- The amplitude of soliton pulses is so high that the electron states in a quantum well make temporal excursions in energy up to 10 meV . The subpicosecond duration of the solitons is less than the coherence time of the optical transition between the electron states and a frequency modulation of emitted light during the coherence time ( chirping effect ) is observed.
- These include ( but are not limited to ) Beam Position Monitors ( BPMs ) to measure the position of the bunch, screens ( fluorescent screens, Optical Transition Radiation ( OTR ) devices ) to image the profile of the bunch, wire-scanners to measure its cross-section, and toroids or ICTs to measure the bunch charge ( i . e ., the number of particles per bunch ).
- Both ordinary and collision-induced spectra may be observed in emission and absorption and require an electric or magnetic multipole moment-in most cases an electric dipole moment-to exist for an optical transition to take place from an initial to a final quantum state of a molecule or a molecular complex . ( For brevity of expression we will use here the term " molecule " interchangeably for atoms as well as molecules ).
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