Increasing temperature will increase the width of a spectral line but won't increase the intensity.
The element was named after the beautiful green spectral line, which identified the element.
The wavelength and spectral line width selections shall be based on both the transmitter and the receiver design.
The diagram below shows the characteristic spectral line patterns of four elements.
spectral line in Science
(spěk'trəl) An isolated bright or dark line in a spectrograph produced by emission or absorption of light of a single wavelength, generally corresponding to a specific shift in the energy of an electron moving from one orbital to another.