Excitation and decay of correlated atomic States.

Lifetime measurements of the 7D levels of atomic francium

We present lifetime measurements of the 7D3/2 and 7D5/2 levels of Fr. We use a time-correlated singlephoton counting technique on a sample of Fr atoms confined and cooled in a magneto-optical trap. The upper state of the 7P3/2 trapping transition serves as the resonant intermediate level for two-photon excitation of the 7D states. A probe laser provides the second step of the excitation, and we...

Quantum interference between nuclear excitation by electron capture and radiative recombination

Experimental observations of atomic physics processes with regard to the internal structure of the nucleus have been reported, such as the bound-state internal conversion [1] and the nuclear excitation by electron transition (NEET) [2]. Closely related to NEET is the nuclear excitation by electron capture (NEEC). It is a resonant process in which a free electron is captured into an atomic shell...

Photon angular distribution in nuclear excitation by electron capture

In the resonant process of nuclear excitation by electron capture (NEEC), a free electron is captured into a bound atomic shell with the simultaneous excitation of the nucleus. NEEC is a process analogous to dielectronic recombination (DR), and when followed by the radiative decay of the nucleus, it is a competing resonant channel of radiative recombination (RR). Partly due to the dominant RR b...

Sound Wave Propagation in a Multiferroic Thermo Elastic Nano Fiber Under the Influence of Surface Effect and Parametric Excitation

This study investigates that the sound wave propagation of multiferroic thermo elastic Nanofibers under the influence of surface effect and parametric excitation via Timoshenko form of beam equations. The equation of analytical model is obtained for Nanofiber through shear and rotation effect. The solution of the problem is reached through the coupled time harmonic equations in flexural directi...

Vibrational-state-dependent decay of the CO C(1s) excitation.