excited state


Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

Excited state

In quantum mechanics, a stationary state of higher energy than the lowest stationary state or ground state of a particle or a system of particles. Customarily, only bound stationary states, which generally are at most denumerably infinite in number, are spoken of as excited, although the formal quantum theory often treats the noncountable unbound stationary states on an equal footing with the bound states. See Ground state, Metastable state

excited state

See energy level; excitation.

excited state

[ek′sīd·əd ′stāt]
(quantum mechanics)
A stationary state of higher energy than the lowest stationary state or ground state of a particle or system of particles.
References in periodicals archive ?
Hydrogen bonding and dipolar interactions between quinacridone molecules are strong and may promote quicker relaxation of reactive excited states along pathways that help preserve the quinacridone's chemical structure (Figure 5).
People have thought this more excited state should exist for years but nobody has managed to see it until now.
Some atoms are easy to manipulate, while others are more difficult to get to jump into an excited state and the harder it is to get them to jump, the longer they last.
In the positron emission, an excited up quark in the positron after absorbing a certain amount of energy degenerates into a ground state up quark and produces an excited state down and antidown quark pair, energy + [u.
But commonly, the excited molecule decays to a less energetic excited state called a triplet excited state.
The absorption may be clue to two photon absorption (TPA), excited state absorption (ESA), reverse saturable absorption (RSA), etc.
In my last job I had one who would get into an excited state at the slightest event, which then put the other managers into a spin too, often in different directions.
first, if a possible side reaction was occurring between the excited state triplet of ITX and MA.
When IBr is excited with femtosecond pulses of 520 nm laser light, one finds that about 75 percent of the bromine atoms are formed in their spin-orbit excited state and the remainder in the ground state.
William Frederick Edge (23), billiard maker, rushed in an excited state into the police office, said he had murdered the child and produced a blood-stained razor.
The corresponding excited state surface was obtained through time-dependent density functional theory (TD-DFT), also at the B3LYP/6-31G * level.
Excited State Quencher (ESQTM) technology works by quenching the excited state of molecules when exposed to light.