Sentences with phrase «excited electron states»

He identified the excited electron states in 15 chromophores, or light - absorbing structures, and provided theoretical chemistry insights on the mechanisms by which these molecules take in the light.

Not exact matches

When one of these excited electrons falls back to its original state it emits a photon, which in turn stimulates another electron to emit a photon, and so on.

Instead of relying on light waves emitted by electrons, it would use radiation emitted when the nucleus is excited to a high energy state, and then drops into a lower energy state.

When a molecule absorbs a photon — the fundamental particle of light — electrons in the molecular system are promoted from a low - energy (ground) state to a higher - energy (excited) state.

They then exposed the evolving quantum system to a third laser beam to try and excite the atoms into what is known as a Rydberg state — a state in which one of an atom's electrons is excited to a very high energy compared with the rest of the atom's electrons.

OU researchers excite the Rydberg atom using lasers in a cloud of ground - state atoms, so the Rydberg electron can collide with a ground - state atom and form the molecule.

In an x-ray absorption experiment light excites a strongly bound core electron into a conduction band state.

An electron which is strongly bound to a Lithium nucleus (green) is excited into a conduction band state (red) that interacts with both the Lithium nucleus and Borohydride group.

They also conducted an experiment demonstrating the ability to track changes in a molecule during the transition of an electron to an excited state.

A weak UV pulse excited an outer electron to a higher state, followed by a strong infrared pulse creating a field in which the electron escaped from the molecule due to the tunneling effect.

The first pulse converted the electron from a conventional, unexcited particle into a wave packet with several different excited states.

Lasers require an electrical current or another laser to excite a material's electrons, which then emit photons as they return to their normal state.

Evidence for photoinduced electron transfer from the excited state of a conducting polymer onto buckminsterfullerene, C60, is reported.

The electrons travel from their initial state to the excited state by two paths rather than one — similar to a forked road leading to the same destination.

Laser light occurs when most of a material's electrons are in an excited, or higher, energy state.

Stacking up two «atomic sandwiches» yields coupled excited charge states across the planar interface with the magnetic direction or «spin state» becoming aligned for a large population of electrons.

That's because in the excited state, two electrons waltz through the molecule, spinning like tops, and only when the electron spins point in opposite directions does the dance end with the release of a photon.

Rydberg atoms are atoms, in which one single electron is lifted into a highly excited state and orbits the nucleus at a very large distance.

Rey says that the strontium atoms in the ground state can be used to simulate spin - down electrons, and the excited atoms, spin - up electrons.

This challenge requires accurate and efficient methods to compute ground and excited states, as well as the ability to explicitly treat real - time dynamics of electrons for systems consisting of hundreds of atoms: TDDFT arguably is the best compromise between accuracy and computational efficiency.

Dr. Martin Head - Gordon is an electronic structure theorist who is known for development of linear scaling methods for performing density functional theory calculations, for new methods for calculating electronic excited states, and for advances in electron correlation methods, including the development of widely used density functionals and many - electron wavefunction theory.

That implies that an excited electron in a greenhouse gas molecule in the atmosphere can not radiate toward the ground unless it can «find» another electron on the surface in a ground state which is capable of absorbing the photon which is to be radiated.