Takes place when an atom or molecule interacts with a heated surface or is in a gaseous
environment at high temperature. Examples of the latter may be a capillary arc plasma,
a microwave plasma or an inductively coupled plasma.
Source:
PAC, 1991, 63, 1541
(Recommendations for nomenclature and symbolism for mass spectroscopy (including an
appendix of terms used in vacuum technology). (Recommendations 1991))
on page 1548