Definitions for "Excited state"
Related Terms:
Excited atom, Pair production, Annihilation, Excitation, Ground state, Spallation, Bremsstrahlung, Beta particles, Beta particle, Ionization energy, Alpha particle, Energy level, Positron , Accelerator, Fermi energy, Alpha, Nuclear fusion, Binding energy, Antiproton, Photons, Atomic energy, Particle accelerator, Nuclear reaction, Plasma, Photon, Photoelectron, Alpha radiation, Neutrino, Cosmic ray, Ionizing radiation, Electron affinity, Compton effect, Bohr model, Ionize, Ionization, Alpha particles, Tevatron, Antiparticle, Alpha rays, Radioactivity, Recombination, Electron capture, Bohr atom, Muon, Neutrons, Cosmic rays, Leptons, Electron, Spontaneous emission, Antimatter
Compare with ground state. An atom or molecule which has absorbed energy is said to be in an excited state. Excited states tend to have short lifetimes; they lose energy either through collisions or by emitting photons to "relax" back down to their ground states.
condition of a charged phosphor before emission
This is a state where one or more electrons have been promoted from orbitals higher than those they occupy in the ground state.
The state of molecule, atom, or nucleus when it possesses more than its ground state energy. Excess molecular or atomic energy may be reduced through emission of photons or heat. Excess nuclear energy may be reduced through emission of gamma rays or conversion electrons or by further decay of a radionuclide.
A state in which an atom or molecule has absorbed a discrete amount of energy from a particle (including light particles).
Atom with an electron in a higher energy level than it normally occupies.
An energy state to which an electron may move by the absorption of energy.
an atomic, ionic or molecular state with higher energy than the ground state. Can be electronically, vibrationally or rotationally excited.
The state of an atom or nucleus when it possesses more than its normal energy. The excess energy is usually released eventually as a gamma ray.
The state of an atom when one of its electrons is in a higher energy orbital than the ground state. Atoms can become excited by absorbing a photon of a specific energy, or by colliding with a nearby atom.
The state of an atom when one or more of its electrons have been promoted to higher energy levels.
When electrons are not in the lowest possible orbitals.
Any state other than the ground state of an atom or molecule.
the state of an atom, molecule or group when it has absorbed energy and become excited to a higher energy state as compared to the normal ground state. The excited state may be electronic, vibrational, rotational, etc.
The condition of an electron when it has been raised to a higher energy level by some external force. In a laser the force is electrical energy from the power supply.
A greater-than-minimum energy state of any atom; achieved when at least one electron of an atom resides at a greater-than-normal distance from its parent nucleus.
An energy state for an atom in which electrons exist above the minimum or ground state configuration. In general, excited states are unstable and will quickly relax back to ground state through the emission of a quantum of energy.
Configurations of an atom or molecule that contain more energy than the ground state. Excited electronic or vibrational states usually occur following the absorption of radiation of the correct frequency, and are lost by processes such as emission of the radiation ( fluorescence) or by reaction. Many electronically excited states are more reactive than the ground state, for example, the first excited state of atomic oxygen, O(1D).
A greater-than-minimum energy state of any atom that is achieved when at least one of its electrons resides at a greater-than-normal distance from its parent nucleus.
In quantum mechanics an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum).