Key fact Line emission spectra are unique to a particular element. Different elements produce different line spectra. A line spectrum is like a fingerprint - it can be used to identify the element ...

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

842, April 2006 Ca ii H and K Chromospheric Emission Lin... ABSTRACT We have measured the profiles of the Ca ii H and K chromospheric emission lines in 147 main‐sequence stars of spectral type M5–K7 ...

Cosmic rays below 100 MeV are key to the origin of life and the evolution of stars, and they activate interstellar matter to emit spectral emission lines of X-rays and gamma rays specific to the ...

These new Soft X-Ray Emission Spectrometers (SXES) have a high spectral resolution (0.3 eV), allowing the Nitrogen Kα and Titanium Lℓ lines to be resolved with only 1.78 eV separation, as well as with ...