Super-pulsed, where laser emission occurs over 300-400 microseconds.
This weak emission occurs predominantly in the 300-430 nm range.
(Such emission occurs because of the impact of electrons that reach the end wall).
When an electron recombines with a killer ion (10), no visible emission occurs.
Emission occurs when the excited electron returns to a lower electron orbital.
For almost all biological samples, except those with regular nanoscale features, emission occurs in all directions.
Treatment R could increase rice productivity while no more CH4 emission occurs.
The emission occurs at the interface (see p-n junction) between two regions doped with different materials.
For electrons moving fairly slowly in a circular orbit, the emission occurs in a dipole radiation pattern highly peaked at the orbiting frequency.
Luminescence emission occurs after an appropriate material has absorbed energy from a source such as ultraviolet or X-ray radiation, electron beams, chemical reactions, and so on.
Except for a few radionuclides that spontaneously emit radiation, emission occurs only after initial excitation of the analyte by an external source of energy.
