Diagram of ambient ionization in mass spectrometry indicating desorption/extraction (spray, heat, laser), optional post-ionization (electrospray, chemical ionization, plasma), ion formation, and entry into the vacuum of the mass spectrometer.
<a href="//commons.wikimedia.org/wiki/User:Kkmurray" title="User:Kkmurray">Kkmurray</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>