Cathode for a
glow electric discharge consisting of a flat sample, which is cooled during the discharge process so that
thermal volatilization is suppressed and the sample material is removed by sputtering only.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 720 (https://doi.org/10.1515/pac-2019-0203)