excited state


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

state

 [stāt]
condition or situation.
alpha state the state of relaxation and peaceful awakefulness associated with prominent alpha brain wave activity.
anxiety state the condition of experiencing undue anxiety, as in anxiety disorders.
excited state the condition of a nucleus, atom, or molecule produced by the addition of energy to the system as the result of absorption of photons or of inelastic collisions with other particles or systems.
ground state the condition of lowest energy of a nucleus, atom, or molecule.
persistent vegetative state a condition of profound nonresponsiveness in the wakeful state caused by brain damage at whatever level and characterized by a nonfunctioning cerebral cortex, the absence of any discernible adaptive response to the external environment, akinesia, mutism, and inability to signal; the electroencephalogram may be isoelectric or show abnormal activity. Vegetative states raise ethical questions regarding appropriate care, use of resources, and allowing a patient to die.
refractory state a condition of subnormal excitability of muscle and nerve following excitation.
resting state the physiologic condition achieved by complete bed rest for at least 1 hour.
steady state dynamic equilibrium.

ex·cit·ed state

the condition of an atom or molecule after absorbing energy, which may be the result of exposure to light, electricity, elevated temperature, or a chemical reaction; such activation may be a necessary prelude to a chemical reaction or to the emission of light.
Synonym(s): activated state

excited state

[eksī′tid]
Etymology: L, excitare, to rouse, status
(in chemistry and physics) an energy level of a system that is higher than the ground state. The system decays to the ground state and emits the energy difference, usually in the form of photons.

ex·cit·ed state

(ek-sī'tĕd stāt)
The condition of an atom or molecule after absorbing energy, which may be the result of exposure to light, electricity, elevated temperature, or a chemical reaction; such activation may be a necessary prelude to a chemical reaction or to the emission of light.

state

condition or situation.

excited state
the condition of a nucleus, atom or molecule produced by the addition of energy to the system as the result of absorption of photons or of inelastic collisions with other particles or systems.
ground state
the condition of lowest energy of a nucleus, atom or molecule.
refractory state
a condition of subnormal excitability of muscle and nerve following excitation.
resting state
the physiological condition achieved by complete rest for at least 1 hour.
steady state
dynamic equilibrium.
References in periodicals archive ?
When sunscreens are exposed to sunlight, the energy in UV radiation "pumps" some of the molecules from the ground state reservoir to the singlet excited state reservoir.
The excited state triplet of ITX was determined to be the reactive species that reacts with MA.
The electron in the excited state need not have the same set of quantum numbers as the electron with which it was paired in the bonding orbital in the ground state before absorption.
Because the difference in energy between the second excited state and the ground state ([E.
The acetophenone derivatives (sulfoxide, sulfide, sulfone, oxysulfone) all undergo excited state radical cleavage to generate [Alpha]-keto radicals and sulfur (or oxygen in the latter case) centered radicals.
3 available on Betfair prerace, which probably explained his excited state.
The excited state is very short lived at room temperature, usually between 10 e(-15) to l0 e(-6) s for a singlet state and 10 e(-6) to 30 s for triplet state.
Under quantum mechanics, the energy of the system can be in two states: either the atom or the emitted photon is in the excited state.
Excited state quenchers can be used as a stand-alone formulation stabilizer, or combined with benzotriazole UV Light stabilizers.
The man was described as heavyset, between 30 and 40 years old, and dressed in a tracksuit, and he was in a highly excited state - perhaps drunk, according to local reports.
This goal is beset by many difficulties since the fluorescence radiance depends on three parameters 1) the probability of absorbing a photon (molar extinction), 2) the number of fluorophores, and 3) the probability of radiative decay of the excited state (quantum yield).
The pulse deposited energy in the electrons of the nucleosides much as sunlight would, putting the nucleosides into an excited state.