excited atom

Similarly, vacuum fluctuations cause an excited atom to fall into its ground state.

Space itself is not actually shining; excited atoms are fluorescing.

The excited atoms can then be removed from the system, reducing the entropy.

Often it accompanies light emission from excited atoms or molecules in the gas.

An excited atom can lose its energy by emitting a photon.

This generates a spherical electron wave with the excited atom as the center.

In a medium suitable for laser operation, we require these excited atoms to quickly decay to level 2.

Also, it was noted that excited atoms emit radiation with discrete frequencies.

If an excited atom then emits a photon spontaneously, it will be accelerated.

When these excited atoms or ions revert to their ground state, they will emit a photon.

This is because the probabilities of transition cannot be affected by the presence or absence of other excited atoms.

The excited atoms re-radiate their absorbed energy (fluoresce) at this same wavelength.

When the excited atoms relax back into their ground state, a low-intensity glow is emitted, giving the technique its name.

The correlated relaxations of many excited atoms to produce coherent light from a laser is another."

Thus, an excited atom may have an electron in, for instance, a 5g or 6h orbital.

Specifically, an excited atom will act like a small electric dipole which will oscillate with the external field provided.

A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number.

Relaxation sequences of excited atoms.

Only the liquid heat shimmer of excited atoms dancing above the twisted nacelle betrayed how deadly a place that crash site must be.

The white veins in the pink marble tremble and nod, they sway and stretch out to catch the excited atoms.

The doubly excited atom spontaneously decays by ejecting one of the excited electrons.

Binding of a larger number of excited atoms form Rydberg matter clusters, the lifetime of which can exceed many seconds.

As these excited atoms decay to lower states, they will emit photons, which can then be detected and a spectrum can be determined.

Accordingly, when a photon is emitted by this excited atom, there is an extra momentum added to the atom.

In this case, the excited atom relaxes to the ground state, and is induced to produce a second photon of frequency ν.