We find that its multipole composition locally depends on the radial position in the wavefront, and this position dependence is imprinted in the selection rules. Detailed calculations are performed for Bessel beams and the 4s S-2(1/2) -> 3d D-2(5/2) transition of a Ca+ ion. Our ...
Influence of electric field on a first-order smectic-A-ferroelectric-smectic-C liquid-crystal phase transition: A field-induced critical point The observation of a new critical point in liquid-crystal phase transitions is reported. Detailed tilt-angle, polarization, and susceptibility measurements... ...
1.2.1RadiativeTransitionSelectionRules y 7 1.2.2SpectralSeriesoftheHydrogenAtom .,.-'.' 8 1.2.3HydrogenlikeIons S\. 9 1.3FineStructure 10 1.3.1VelocityDependenceofElectronMass 10 1.3.2Spin-OrbitInteraction 11 1.3.3FineStructure.SelectionRules ...
Here we demonstrate ponderomotive spectroscopy by using optical-lattice-trapped Rydberg atoms, pulsating the lattice light and driving a microwave atomic transition that would otherwise be forbidden by established spectroscopic selection rules. This ability to measure frequencies of previously inaccessible ...
Table 4. Transition rules EXAMPLE 3.1 Consider t = 〈a〉: b and u = . It is easy to see that t⟶a(*1);b⟶b1where all the states are abstract, while u⟶a*(1;b)⟶b*1, where the intermediate state *(1; b) is concrete. So, t | c will allow the execution of...
While extensive work has been dedicated to the measurement of the demagnetization time following an ultra-short laser pulse, experimental studies of its underlying microscopic mechanisms are still scarce. In transition metal ferromagnets, one of the main mechanism is the spin-flip of conduction electron...
(3p). Inbandd, the first subshell index refers to the initial vacancy, whereas the latter refer to the subshells from which the electrons are removed. Single arrows indicate ions involved in the transition via initial charge state, involved electronic configuration(s) (holes indicated), and/or...
transition). Selection rules dictate that the excited state decays back to the initial state, so there is a nearly closed cycle of absorption and spontaneous emission, but there is some off-resonant excitation to the F = 2 hyperfine level which can decay to F = 1 and be ‘lost’ fr...
Regarding your other questions, if an electron configuration gives rise to multiple term symbols, then each of those term symbols represents a unique, discrete state, with an associated unique, discrete energy value. Assuming transitions are allowed by selection rules, a transition will be observed ...
Data comprise the electron-impact ionization obtained in the modified relativistic binary encounter Bethe model and other structural properties, such as the fluorescence yield of sub-shell or the Coster–Kronig Auger transition yields, derived within ab initio methods in quantum chemistry. Experiments, ...