"spectral emission" is correct and usable in written English.
It can be used to refer to light emitted by a particular element or chemical compound, and is commonly used in scientific contexts. For example, "We observed strong spectral emission from the oxygen atoms."
This drift motion can perturb the spectral emission in the plasma shell.
Forbidden transitions proceed slowly compared to the allowed transitions, and the resulting spectral emission lines are relatively weak.
Each species of atoms or ions within the plasma will emit light with signature spectral emission peaks.
Abstract: Spectral emission lines are local features that represent extra emissions of photons in a narrow band of energy.
In addition, another instrument mapped Mercury's long cometlike tail, which is prominently visible in the spectral emission lines of sodium.
The added cerous nitrate improves spectral emission properties, while the small amounts of thorium sulfate yield mantles with improved mechanical properties.
Turns out that burning wood is actually oxidation; what happens on the sun has nothing to do with that, it's nuclear fusion; lightning is thermal emission; fireflies are biophosphorescence; northern lights are spectral emission").
Spectral emission characteristics of the 2D VO2 PhCs were investigated using the finite difference time domain (FDTD) method.
Detailed investigations of the spatiotemporal and spectral emission properties of a high power diode laser are presented.
Characteristics investigated include side-mode suppression ratio, ease of tuning, tuning range, spectral emission linewidth, frequency stability and wavelength modulation.
Spatially integrated measurements reveal similar spectral emission for LIF and LII, but vastly different time scales associated with radiative decay.
