Near dipole-dipole interaction induced control of high-precision three-dimensional atom localization via probe absorption in a four-level phase-coherent atomic medium.

It is newly proposed that the presence of the near dipole-dipole (NDD) interaction effect in an optically dense atomic ensemble may be very useful for controlling high-precision atom localization. In the present work based on observing the NDD effect-induced space-dependent-absorption of a weak probe field operating in a partially closed four-level Y-type atomic system, we have shown the NDD parameter being an efficient control knob along with the other system parameters for easier optimization of the localization pattern with enhanced detection probability in three-dimensional (3D) space. Controlling localization patterns at lower and larger values of NDD parameter is discussed at different physical conditions.

UV-VUV absorption spectroscopy and photodissociation dynamics of -propylamine.

We report for the first time the ultraviolet-vacuum ultraviolet absorption spectrum of -propylamine in the wavenumber range 40 000 to 75 000 cm (5.0-9.3 eV) using synchrotron radiation.

Evolution of B (n = + 3 to - 3) wheel with electron injection/abstraction: an insight from electronic structure analysis.

Context: The planar B cluster, a prototypical molecular 'Wankel motor', has captivated the scientific community with its exceptional stability as well as rotor action. The present study is an exploration of how incremental electron injection/abstraction influences the electronic structure of B clusters with B as a reference one. It has been found that seven different charge states (from + 3 to - 3) of B cluster are possible, among which B triplet is the lowest energy cluster.

Unravelling the effect of successive electron injection into the smallest cyclic boron cluster, B (n = +2, +1, 0, -1, -2, -3) through electronic structure analysis.

With an aim to study the effect of successive electron injection or abstraction on the electronic structure of the cyclic boron clusters; B (where n = +2, +1, 0, -1, -2, -3) have been explored using DFT methodology. A total of nine clusters have been studied including the minimum energy ground states and a few closely lying ground states. Through real space functions like electron density, Electron Localization Function (ELF), Localized Orbital Locator (LOL), and Phase-space-defined Fisher Information Density (PS-FID) an in-depth study has been carried out to understand how the electronic character evolves with the successive electron injection into the cluster.

Astrochemistry: The study of chemical processes in space.

The formation of our solar system occurred approximately 4.6 billion years ago as a result of the gravitational collapse of a small portion of a giant molecular cloud. The origin of life on Earth is yet to be fully understood.

Electric field-driven up-and-down motion of the flexible tail of Al cluster system-a nano-scale flipper.

Context: Dynamic metal nanoclusters have become a hot area of research in the field of nanoscience and nanotechnology due to their potential applications in micro devices. One such dynamic cluster is a quasi-planar ground state (GS) Al cluster which exhibits an electric field driven up and down flipping motion of the flexible tail which oscillates with respect to the mean plane. A Car-Parrinello molecular dynamics (CPMD) simulation has been carried out to understand the nature of dynamics of the cluster.